diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 977425c..6cc65f7 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Install dependencies
-        run: sudo /usr/bin/env DEBIAN_FRONTEND=noninteractive apt-get install libgtest-dev cmake
+        run: sudo /usr/bin/env DEBIAN_FRONTEND=noninteractive apt-get install cmake
       - name: Get sources
         run: git clone --depth=1 --no-single-branch https://github.com/Stephen-Seo/EntityComponentMetaSystem.git ECMS && cd ECMS && git checkout $GITHUB_REF_NAME
       - name: Build UnitTests
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 72f4c39..81efa30 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -47,23 +47,19 @@ endif()
 install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/EC DESTINATION include)
 
 
-find_package(GTest)
-if(GTEST_FOUND)
-    set(UnitTests_SOURCES
-        test/MetaTest.cpp
-        test/ECTest.cpp
-        test/ThreadPoolTest.cpp
-        test/Main.cpp
-    )
+set(UnitTests_SOURCES
+    test/MetaTest.cpp
+    test/ECTest.cpp
+    test/ThreadPoolTest.cpp
+    test/Main.cpp
+)
 
-    add_executable(UnitTests ${UnitTests_SOURCES})
-    target_link_libraries(UnitTests EntityComponentSystem ${GTEST_LIBRARIES})
-    target_include_directories(UnitTests PUBLIC ${GTEST_INCLUDE_DIR})
-    target_compile_features(UnitTests PUBLIC cxx_std_14)
+add_executable(UnitTests ${UnitTests_SOURCES})
+target_link_libraries(UnitTests EntityComponentSystem)
+target_compile_features(UnitTests PUBLIC cxx_std_14)
 
-    enable_testing()
-    add_test(NAME UnitTests COMMAND UnitTests)
-endif()
+enable_testing()
+add_test(NAME UnitTests COMMAND UnitTests)
 
 add_executable(WillFailCompile ${WillFailCompile_SOURCES})
 set_target_properties(WillFailCompile PROPERTIES
diff --git a/src/test/ECTest.cpp b/src/test/ECTest.cpp
index 381f24f..c37e65d 100644
--- a/src/test/ECTest.cpp
+++ b/src/test/ECTest.cpp
@@ -1,5 +1,4 @@
-
-#include <gtest/gtest.h>
+#include "test_helpers.h"
 
 #include <chrono>
 #include <iostream>
@@ -97,7 +96,7 @@ void setContextToThreeAndFour(std::size_t /* id */, void* context, C0* /* c */)
     contextPtr->b = 4;
 }
 
-TEST(EC, Bitset)
+void TEST_EC_Bitset()
 {
     {
         EC::Bitset<ListComponentsAll, EmptyList> bitset;
@@ -106,7 +105,7 @@ TEST(EC, Bitset)
 
         auto genBitset = EC::Bitset<ListComponentsAll, EmptyList>::generateBitset<ListComponentsSome>();
 
-        EXPECT_EQ(bitset, genBitset);
+        CHECK_EQ(bitset, genBitset);
     }
 
     {
@@ -116,11 +115,11 @@ TEST(EC, Bitset)
 
         auto genBitset = EC::Bitset<ListAll, EmptyList>::generateBitset<MixedList>();
 
-        EXPECT_EQ(bitset, genBitset);
+        CHECK_EQ(bitset, genBitset);
     }
 }
 
-TEST(EC, Manager)
+void TEST_EC_Manager()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
@@ -160,18 +159,18 @@ TEST(EC, Manager)
 
     {
         auto* pos = manager.getEntityData<C0>(e0);
-        EXPECT_EQ(pos->x, 7);
-        EXPECT_EQ(pos->y, 7);
+        CHECK_EQ(pos->x, 7);
+        CHECK_EQ(pos->y, 7);
     }
 
     {
         bool has = manager.hasComponent<C0>(e1);
 
-        EXPECT_TRUE(has);
+        CHECK_TRUE(has);
 
         has = manager.hasTag<T0>(e1);
 
-        EXPECT_TRUE(has);
+        CHECK_TRUE(has);
     }
 
     manager.deleteEntity(e0);
@@ -189,13 +188,13 @@ TEST(EC, Manager)
 
     manager.forMatchingSignature<EC::Meta::TypeList<T0> >(updateTagOnly);
 
-    EXPECT_EQ(2, count);
+    CHECK_EQ(2, count);
 
     manager.deleteEntity(e1);
     manager.deleteEntity(e2);
 }
 
-TEST(EC, MoveComponentWithUniquePtr)
+void TEST_EC_MoveComponentWithUniquePtr()
 {
     {
         EC::Manager<EC::Meta::TypeList<C0Ptr>, EC::Meta::TypeList<> > manager;
@@ -214,8 +213,8 @@ TEST(EC, MoveComponentWithUniquePtr)
             x = (*ptr)->x;
             y = (*ptr)->y;
         });
-        EXPECT_EQ(5, x);
-        EXPECT_EQ(10, y);
+        CHECK_EQ(5, x);
+        CHECK_EQ(10, y);
     }
     {
         EC::Manager<EC::Meta::TypeList<TestPtr>, EC::Meta::TypeList<> > manager;
@@ -237,7 +236,7 @@ TEST(EC, MoveComponentWithUniquePtr)
 
         manager.forMatchingSignature<EC::Meta::TypeList<TestPtr> >(getResultFunction);
 
-        EXPECT_EQ(0, result);
+        CHECK_EQ(0, result);
 
         {
             TestPtr ptrDerived = std::make_unique<Derived>();
@@ -246,11 +245,11 @@ TEST(EC, MoveComponentWithUniquePtr)
 
         manager.forMatchingSignature<EC::Meta::TypeList<TestPtr> >(getResultFunction);
 
-        EXPECT_EQ(1, result);
+        CHECK_EQ(1, result);
     }
 }
 
-TEST(EC, DeletedEntities)
+void TEST_EC_DeletedEntities()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
@@ -266,22 +265,22 @@ TEST(EC, DeletedEntities)
     {
         if(i < 2)
         {
-            EXPECT_TRUE(manager.hasComponent<C0>(i));
+            CHECK_TRUE(manager.hasComponent<C0>(i));
         }
         else
         {
-            EXPECT_FALSE(manager.hasComponent<C0>(i));
+            CHECK_FALSE(manager.hasComponent<C0>(i));
         }
     }
 
     for(unsigned int i = 0; i < 2; ++i)
     {
         auto eid = manager.addEntity();
-        EXPECT_FALSE(manager.hasComponent<C0>(eid));
+        CHECK_FALSE(manager.hasComponent<C0>(eid));
     }
 }
 
-TEST(EC, FunctionStorage)
+void TEST_EC_FunctionStorage()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
     auto eid = manager.addEntity();
@@ -312,7 +311,7 @@ TEST(EC, FunctionStorage)
         c1->vx = c1->vy = 10000;
     });
 
-    EXPECT_EQ(2, manager.removeSomeMatchingFunctions({f2index, f3index}));
+    CHECK_EQ(2, manager.removeSomeMatchingFunctions({f2index, f3index}));
 
     auto f4index = manager.addForMatchingFunction<EC::Meta::TypeList<C0>>(
             [] (std::size_t /* id */, void* /* context */, C0* c0) {
@@ -322,7 +321,7 @@ TEST(EC, FunctionStorage)
 
     {
         auto set = std::set<std::size_t>({f4index});
-        EXPECT_EQ(1, manager.removeSomeMatchingFunctions(set));
+        CHECK_EQ(1, manager.removeSomeMatchingFunctions(set));
     }
 
     auto f5index = manager.addForMatchingFunction<EC::Meta::TypeList<C0>>(
@@ -335,7 +334,7 @@ TEST(EC, FunctionStorage)
 
     {
         auto set = std::unordered_set<std::size_t>({f5index});
-        EXPECT_EQ(1, manager.removeSomeMatchingFunctions(set));
+        CHECK_EQ(1, manager.removeSomeMatchingFunctions(set));
     }
 
     manager.callForMatchingFunctions();
@@ -343,46 +342,46 @@ TEST(EC, FunctionStorage)
     {
         auto* c0 = manager.getEntityData<C0>(eid);
 
-        EXPECT_EQ(1, c0->x);
-        EXPECT_EQ(2, c0->y);
+        CHECK_EQ(1, c0->x);
+        CHECK_EQ(2, c0->y);
 
         auto* c1 = manager.getEntityData<C1>(eid);
 
-        EXPECT_EQ(11, c1->vx);
-        EXPECT_EQ(23, c1->vy);
+        CHECK_EQ(11, c1->vx);
+        CHECK_EQ(23, c1->vy);
     }
 
-    EXPECT_TRUE(manager.callForMatchingFunction(f0index));
-    EXPECT_FALSE(manager.callForMatchingFunction(lastIndex + 1));
+    CHECK_TRUE(manager.callForMatchingFunction(f0index));
+    CHECK_FALSE(manager.callForMatchingFunction(lastIndex + 1));
 
     {
         auto* c0 = manager.getEntityData<C0>(eid);
 
-        EXPECT_EQ(2, c0->x);
-        EXPECT_EQ(3, c0->y);
+        CHECK_EQ(2, c0->x);
+        CHECK_EQ(3, c0->y);
 
         c0->x = 1;
         c0->y = 2;
 
         auto* c1 = manager.getEntityData<C1>(eid);
 
-        EXPECT_EQ(11, c1->vx);
-        EXPECT_EQ(23, c1->vy);
+        CHECK_EQ(11, c1->vx);
+        CHECK_EQ(23, c1->vy);
     }
 
-    EXPECT_EQ(1, manager.keepSomeMatchingFunctions({f1index}));
+    CHECK_EQ(1, manager.keepSomeMatchingFunctions({f1index}));
 
     {
         std::vector<std::size_t> indices{f1index};
-        EXPECT_EQ(0, manager.keepSomeMatchingFunctions(indices));
+        CHECK_EQ(0, manager.keepSomeMatchingFunctions(indices));
     }
     {
         std::set<std::size_t> indices{f1index};
-        EXPECT_EQ(0, manager.keepSomeMatchingFunctions(indices));
+        CHECK_EQ(0, manager.keepSomeMatchingFunctions(indices));
     }
     {
         std::unordered_set<std::size_t> indices{f1index};
-        EXPECT_EQ(0, manager.keepSomeMatchingFunctions(indices));
+        CHECK_EQ(0, manager.keepSomeMatchingFunctions(indices));
     }
 
     manager.callForMatchingFunctions();
@@ -390,30 +389,30 @@ TEST(EC, FunctionStorage)
     {
         auto* c0 = manager.getEntityData<C0>(eid);
 
-        EXPECT_EQ(1, c0->x);
-        EXPECT_EQ(2, c0->y);
+        CHECK_EQ(1, c0->x);
+        CHECK_EQ(2, c0->y);
 
         auto* c1 = manager.getEntityData<C1>(eid);
 
-        EXPECT_EQ(11, c1->vx);
-        EXPECT_EQ(46, c1->vy);
+        CHECK_EQ(11, c1->vx);
+        CHECK_EQ(46, c1->vy);
     }
 
-    EXPECT_TRUE(manager.removeForMatchingFunction(f1index));
-    EXPECT_FALSE(manager.removeForMatchingFunction(f1index));
+    CHECK_TRUE(manager.removeForMatchingFunction(f1index));
+    CHECK_FALSE(manager.removeForMatchingFunction(f1index));
 
     manager.callForMatchingFunctions();
 
     {
         auto* c0 = manager.getEntityData<C0>(eid);
 
-        EXPECT_EQ(1, c0->x);
-        EXPECT_EQ(2, c0->y);
+        CHECK_EQ(1, c0->x);
+        CHECK_EQ(2, c0->y);
 
         auto* c1 = manager.getEntityData<C1>(eid);
 
-        EXPECT_EQ(11, c1->vx);
-        EXPECT_EQ(46, c1->vy);
+        CHECK_EQ(11, c1->vx);
+        CHECK_EQ(46, c1->vy);
     }
 
     manager.clearForMatchingFunctions();
@@ -422,17 +421,17 @@ TEST(EC, FunctionStorage)
     {
         auto* c0 = manager.getEntityData<C0>(eid);
 
-        EXPECT_EQ(1, c0->x);
-        EXPECT_EQ(2, c0->y);
+        CHECK_EQ(1, c0->x);
+        CHECK_EQ(2, c0->y);
 
         auto* c1 = manager.getEntityData<C1>(eid);
 
-        EXPECT_EQ(11, c1->vx);
-        EXPECT_EQ(46, c1->vy);
+        CHECK_EQ(11, c1->vx);
+        CHECK_EQ(46, c1->vy);
     }
 }
 
-TEST(EC, DeletedEntityID)
+void TEST_EC_DeletedEntityID()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
@@ -444,13 +443,13 @@ TEST(EC, DeletedEntityID)
     manager.deleteEntity(e0);
     manager.deleteEntity(e1);
 
-    EXPECT_FALSE(manager.isAlive(e0));
-    EXPECT_FALSE(manager.isAlive(e1));
-    EXPECT_TRUE(manager.isAlive(e2));
-    EXPECT_TRUE(manager.isAlive(e3));
+    CHECK_FALSE(manager.isAlive(e0));
+    CHECK_FALSE(manager.isAlive(e1));
+    CHECK_TRUE(manager.isAlive(e2));
+    CHECK_TRUE(manager.isAlive(e3));
 }
 
-TEST(EC, MultiThreaded)
+void TEST_EC_MultiThreaded()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
@@ -458,8 +457,8 @@ TEST(EC, MultiThreaded)
     {
         manager.addEntity();
         manager.addComponent<C0>(i, 0, 0);
-        EXPECT_EQ(0, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(0, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(0, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(0, manager.getEntityData<C0>(i)->y);
     }
 
     manager.forMatchingSignature<EC::Meta::TypeList<C0> >(
@@ -473,8 +472,8 @@ TEST(EC, MultiThreaded)
 
     for(unsigned int i = 0; i < 17; ++i)
     {
-        EXPECT_EQ(1, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(2, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(1, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(2, manager.getEntityData<C0>(i)->y);
     }
 
     for(unsigned int i = 3; i < 17; ++i)
@@ -484,8 +483,8 @@ TEST(EC, MultiThreaded)
 
     for(unsigned int i = 0; i < 3; ++i)
     {
-        EXPECT_EQ(1, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(2, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(1, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(2, manager.getEntityData<C0>(i)->y);
     }
 
     manager.forMatchingSignature<EC::Meta::TypeList<C0> >(
@@ -499,8 +498,8 @@ TEST(EC, MultiThreaded)
 
     for(unsigned int i = 0; i < 3; ++i)
     {
-        EXPECT_EQ(3, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(4, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(3, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(4, manager.getEntityData<C0>(i)->y);
     }
 
     manager.reset();
@@ -509,8 +508,8 @@ TEST(EC, MultiThreaded)
     {
         manager.addEntity();
         manager.addComponent<C0>(i, 0, 0);
-        EXPECT_EQ(0, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(0, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(0, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(0, manager.getEntityData<C0>(i)->y);
     }
 
     auto f0 = manager.addForMatchingFunction<EC::Meta::TypeList<C0> >(
@@ -524,8 +523,8 @@ TEST(EC, MultiThreaded)
 
     for(unsigned int i = 0; i < 17; ++i)
     {
-        EXPECT_EQ(1, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(2, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(1, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(2, manager.getEntityData<C0>(i)->y);
     }
 
     auto f1 = manager.addForMatchingFunction<EC::Meta::TypeList<C0> >(
@@ -539,8 +538,8 @@ TEST(EC, MultiThreaded)
 
     for(unsigned int i = 0; i < 17; ++i)
     {
-        EXPECT_EQ(3, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(4, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(3, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(4, manager.getEntityData<C0>(i)->y);
     }
 
     for(unsigned int i = 4; i < 17; ++i)
@@ -552,20 +551,20 @@ TEST(EC, MultiThreaded)
 
     for(unsigned int i = 0; i < 4; ++i)
     {
-        EXPECT_EQ(1, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(2, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(1, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(2, manager.getEntityData<C0>(i)->y);
     }
 
     manager.callForMatchingFunction(f1, 8);
 
     for(unsigned int i = 0; i < 4; ++i)
     {
-        EXPECT_EQ(3, manager.getEntityData<C0>(i)->x);
-        EXPECT_EQ(4, manager.getEntityData<C0>(i)->y);
+        CHECK_EQ(3, manager.getEntityData<C0>(i)->x);
+        CHECK_EQ(4, manager.getEntityData<C0>(i)->y);
     }
 }
 
-TEST(EC, ForMatchingSignatures)
+void TEST_EC_ForMatchingSignatures()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
@@ -607,16 +606,16 @@ TEST(EC, ForMatchingSignatures)
     >(
         std::make_tuple(
         [] (std::size_t /* id */, void* /* context */, C0* c) {
-            EXPECT_EQ(c->x, 0);
-            EXPECT_EQ(c->y, 0);
+            CHECK_EQ(c->x, 0);
+            CHECK_EQ(c->y, 0);
             c->x = 1;
             c->y = 1;
         },
         [] (std::size_t /* id */, void* /* context */, C0* c0, C1* c1) {
-            EXPECT_EQ(c0->x, 1);
-            EXPECT_EQ(c0->y, 1);
-            EXPECT_EQ(c1->vx, 0);
-            EXPECT_EQ(c1->vy, 0);
+            CHECK_EQ(c0->x, 1);
+            CHECK_EQ(c0->y, 1);
+            CHECK_EQ(c1->vx, 0);
+            CHECK_EQ(c1->vy, 0);
             c1->vx = c0->x;
             c1->vy = c0->y;
             c0->x = 2;
@@ -628,15 +627,15 @@ TEST(EC, ForMatchingSignatures)
     {
         if(id != first && id != last)
         {
-            EXPECT_EQ(2, manager.getEntityData<C0>(id)->x);
-            EXPECT_EQ(2, manager.getEntityData<C0>(id)->y);
-            EXPECT_EQ(1, manager.getEntityData<C1>(id)->vx);
-            EXPECT_EQ(1, manager.getEntityData<C1>(id)->vy);
+            CHECK_EQ(2, manager.getEntityData<C0>(id)->x);
+            CHECK_EQ(2, manager.getEntityData<C0>(id)->y);
+            CHECK_EQ(1, manager.getEntityData<C1>(id)->vx);
+            CHECK_EQ(1, manager.getEntityData<C1>(id)->vy);
         }
         else
         {
-            EXPECT_EQ(1, manager.getEntityData<C0>(id)->x);
-            EXPECT_EQ(1, manager.getEntityData<C0>(id)->y);
+            CHECK_EQ(1, manager.getEntityData<C0>(id)->x);
+            CHECK_EQ(1, manager.getEntityData<C0>(id)->y);
         }
     }
 
@@ -721,39 +720,39 @@ TEST(EC, ForMatchingSignatures)
     {
         if(iter->first != first && iter->first != last)
         {
-            EXPECT_EQ(2, iter->second);
+            CHECK_EQ(2, iter->second);
         }
         else
         {
-            EXPECT_EQ(1, iter->second);
+            CHECK_EQ(1, iter->second);
         }
     }
     for(auto iter = cy.begin(); iter != cy.end(); ++iter)
     {
         if(iter->first != first && iter->first != last)
         {
-            EXPECT_EQ(2, iter->second);
+            CHECK_EQ(2, iter->second);
         }
         else
         {
-            EXPECT_EQ(1, iter->second);
+            CHECK_EQ(1, iter->second);
         }
     }
     for(auto iter = c0x.begin(); iter != c0x.end(); ++iter)
     {
-        EXPECT_EQ(5, iter->second);
+        CHECK_EQ(5, iter->second);
     }
     for(auto iter = c0y.begin(); iter != c0y.end(); ++iter)
     {
-        EXPECT_EQ(7, iter->second);
+        CHECK_EQ(7, iter->second);
     }
     for(auto iter = c1vx.begin(); iter != c1vx.end(); ++iter)
     {
-        EXPECT_EQ(1, iter->second);
+        CHECK_EQ(1, iter->second);
     }
     for(auto iter = c1vy.begin(); iter != c1vy.end(); ++iter)
     {
-        EXPECT_EQ(1, iter->second);
+        CHECK_EQ(1, iter->second);
     }
     }
 
@@ -761,15 +760,15 @@ TEST(EC, ForMatchingSignatures)
     {
         if(eid != first && eid != last)
         {
-            EXPECT_EQ(1, manager.getEntityData<C0>(eid)->x);
-            EXPECT_EQ(2, manager.getEntityData<C0>(eid)->y);
-            EXPECT_EQ(6, manager.getEntityData<C1>(eid)->vx);
-            EXPECT_EQ(8, manager.getEntityData<C1>(eid)->vy);
+            CHECK_EQ(1, manager.getEntityData<C0>(eid)->x);
+            CHECK_EQ(2, manager.getEntityData<C0>(eid)->y);
+            CHECK_EQ(6, manager.getEntityData<C1>(eid)->vx);
+            CHECK_EQ(8, manager.getEntityData<C1>(eid)->vy);
         }
         else
         {
-            EXPECT_EQ(11, manager.getEntityData<C0>(eid)->x);
-            EXPECT_EQ(13, manager.getEntityData<C0>(eid)->y);
+            CHECK_EQ(11, manager.getEntityData<C0>(eid)->x);
+            CHECK_EQ(13, manager.getEntityData<C0>(eid)->y);
         }
     }
 
@@ -795,15 +794,15 @@ TEST(EC, ForMatchingSignatures)
     {
         if(id != first && id != last)
         {
-            EXPECT_EQ(10000, manager.getEntityData<C0>(id)->x);
-            EXPECT_EQ(10000, manager.getEntityData<C0>(id)->y);
-            EXPECT_EQ(10000, manager.getEntityData<C1>(id)->vx);
-            EXPECT_EQ(10000, manager.getEntityData<C1>(id)->vy);
+            CHECK_EQ(10000, manager.getEntityData<C0>(id)->x);
+            CHECK_EQ(10000, manager.getEntityData<C0>(id)->y);
+            CHECK_EQ(10000, manager.getEntityData<C1>(id)->vx);
+            CHECK_EQ(10000, manager.getEntityData<C1>(id)->vy);
         }
     };
 }
 
-TEST(EC, forMatchingPtrs)
+void TEST_EC_forMatchingPtrs()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
@@ -862,21 +861,21 @@ TEST(EC, forMatchingPtrs)
         if(eid != first && eid != last)
         {
             C0* c0 = manager.getEntityData<C0>(eid);
-            EXPECT_EQ(1, c0->x);
-            EXPECT_EQ(2, c0->y);
+            CHECK_EQ(1, c0->x);
+            CHECK_EQ(2, c0->y);
             c0->x = 0;
             c0->y = 0;
             C1* c1 = manager.getEntityData<C1>(eid);
-            EXPECT_EQ(3, c1->vx);
-            EXPECT_EQ(4, c1->vy);
+            CHECK_EQ(3, c1->vx);
+            CHECK_EQ(4, c1->vy);
             c1->vx = 0;
             c1->vy = 0;
         }
         else
         {
             C0* c = manager.getEntityData<C0>(eid);
-            EXPECT_EQ(11, c->x);
-            EXPECT_EQ(12, c->y);
+            CHECK_EQ(11, c->x);
+            CHECK_EQ(12, c->y);
             c->x = 0;
             c->y = 0;
         }
@@ -893,21 +892,21 @@ TEST(EC, forMatchingPtrs)
         if(eid != first && eid != last)
         {
             C0* c0 = manager.getEntityData<C0>(eid);
-            EXPECT_EQ(1, c0->x);
-            EXPECT_EQ(2, c0->y);
+            CHECK_EQ(1, c0->x);
+            CHECK_EQ(2, c0->y);
             c0->x = 0;
             c0->y = 0;
             C1* c1 = manager.getEntityData<C1>(eid);
-            EXPECT_EQ(3, c1->vx);
-            EXPECT_EQ(4, c1->vy);
+            CHECK_EQ(3, c1->vx);
+            CHECK_EQ(4, c1->vy);
             c1->vx = 0;
             c1->vy = 0;
         }
         else
         {
             C0* c = manager.getEntityData<C0>(eid);
-            EXPECT_EQ(11, c->x);
-            EXPECT_EQ(12, c->y);
+            CHECK_EQ(11, c->x);
+            CHECK_EQ(12, c->y);
             c->x = 0;
             c->y = 0;
         }
@@ -941,15 +940,15 @@ TEST(EC, forMatchingPtrs)
     {
         if(id != first && id != last)
         {
-            EXPECT_EQ(10000, manager.getEntityData<C0>(id)->x);
-            EXPECT_EQ(10000, manager.getEntityData<C0>(id)->y);
-            EXPECT_EQ(10000, manager.getEntityData<C1>(id)->vx);
-            EXPECT_EQ(10000, manager.getEntityData<C1>(id)->vy);
+            CHECK_EQ(10000, manager.getEntityData<C0>(id)->x);
+            CHECK_EQ(10000, manager.getEntityData<C0>(id)->y);
+            CHECK_EQ(10000, manager.getEntityData<C1>(id)->vx);
+            CHECK_EQ(10000, manager.getEntityData<C1>(id)->vy);
         }
     };
 }
 
-TEST(EC, context)
+void TEST_EC_context()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
     auto e0 = manager.addEntity();
@@ -962,17 +961,17 @@ TEST(EC, context)
     c.a = 2000;
     c.b = 5432;
 
-    EXPECT_EQ(1, manager.getEntityData<C0>(e0)->x);
-    EXPECT_EQ(2, manager.getEntityData<C0>(e0)->y);
-    EXPECT_EQ(3, manager.getEntityData<C0>(e1)->x);
-    EXPECT_EQ(4, manager.getEntityData<C0>(e1)->y);
+    CHECK_EQ(1, manager.getEntityData<C0>(e0)->x);
+    CHECK_EQ(2, manager.getEntityData<C0>(e0)->y);
+    CHECK_EQ(3, manager.getEntityData<C0>(e1)->x);
+    CHECK_EQ(4, manager.getEntityData<C0>(e1)->y);
 
     manager.forMatchingSignature<EC::Meta::TypeList<C0>>(assignContextToC0, &c);
 
-    EXPECT_EQ(2000, manager.getEntityData<C0>(e0)->x);
-    EXPECT_EQ(5432, manager.getEntityData<C0>(e0)->y);
-    EXPECT_EQ(2000, manager.getEntityData<C0>(e1)->x);
-    EXPECT_EQ(5432, manager.getEntityData<C0>(e1)->y);
+    CHECK_EQ(2000, manager.getEntityData<C0>(e0)->x);
+    CHECK_EQ(5432, manager.getEntityData<C0>(e0)->y);
+    CHECK_EQ(2000, manager.getEntityData<C0>(e1)->x);
+    CHECK_EQ(5432, manager.getEntityData<C0>(e1)->y);
 
     c.a = 1111;
     c.b = 2222;
@@ -982,26 +981,26 @@ TEST(EC, context)
         std::make_tuple(
             setC0ToOneAndTwo, assignContextToC0, setContextToThreeAndFour),
         &c);
-    EXPECT_EQ(1111, manager.getEntityData<C0>(e0)->x);
-    EXPECT_EQ(2222, manager.getEntityData<C0>(e0)->y);
-    EXPECT_EQ(1111, manager.getEntityData<C0>(e1)->x);
-    EXPECT_EQ(2222, manager.getEntityData<C0>(e1)->y);
+    CHECK_EQ(1111, manager.getEntityData<C0>(e0)->x);
+    CHECK_EQ(2222, manager.getEntityData<C0>(e0)->y);
+    CHECK_EQ(1111, manager.getEntityData<C0>(e1)->x);
+    CHECK_EQ(2222, manager.getEntityData<C0>(e1)->y);
 
-    EXPECT_EQ(3, c.a);
-    EXPECT_EQ(4, c.b);
+    CHECK_EQ(3, c.a);
+    CHECK_EQ(4, c.b);
 
     manager.forMatchingSignaturesPtr<EC::Meta::TypeList<C0TL, C0TL>>(
         std::make_tuple(
             &setC0ToOneAndTwo, &assignC0ToContext),
         &c);
 
-    EXPECT_EQ(1, c.a);
-    EXPECT_EQ(2, c.b);
+    CHECK_EQ(1, c.a);
+    CHECK_EQ(2, c.b);
 
-    EXPECT_EQ(1, manager.getEntityData<C0>(e0)->x);
-    EXPECT_EQ(2, manager.getEntityData<C0>(e0)->y);
-    EXPECT_EQ(1, manager.getEntityData<C0>(e1)->x);
-    EXPECT_EQ(2, manager.getEntityData<C0>(e1)->y);
+    CHECK_EQ(1, manager.getEntityData<C0>(e0)->x);
+    CHECK_EQ(2, manager.getEntityData<C0>(e0)->y);
+    CHECK_EQ(1, manager.getEntityData<C0>(e1)->x);
+    CHECK_EQ(2, manager.getEntityData<C0>(e1)->y);
 
     c.a = 1980;
     c.b = 1990;
@@ -1009,19 +1008,19 @@ TEST(EC, context)
     auto fid = manager.addForMatchingFunction<C0TL>(assignContextToC0, &c);
 
     manager.callForMatchingFunction(fid);
-    EXPECT_EQ(1980, manager.getEntityData<C0>(e0)->x);
-    EXPECT_EQ(1990, manager.getEntityData<C0>(e0)->y);
-    EXPECT_EQ(1980, manager.getEntityData<C0>(e1)->x);
-    EXPECT_EQ(1990, manager.getEntityData<C0>(e1)->y);
+    CHECK_EQ(1980, manager.getEntityData<C0>(e0)->x);
+    CHECK_EQ(1990, manager.getEntityData<C0>(e0)->y);
+    CHECK_EQ(1980, manager.getEntityData<C0>(e1)->x);
+    CHECK_EQ(1990, manager.getEntityData<C0>(e1)->y);
 
     c.a = 2000;
     c.b = 2010;
 
     manager.callForMatchingFunctions();
-    EXPECT_EQ(2000, manager.getEntityData<C0>(e0)->x);
-    EXPECT_EQ(2010, manager.getEntityData<C0>(e0)->y);
-    EXPECT_EQ(2000, manager.getEntityData<C0>(e1)->x);
-    EXPECT_EQ(2010, manager.getEntityData<C0>(e1)->y);
+    CHECK_EQ(2000, manager.getEntityData<C0>(e0)->x);
+    CHECK_EQ(2010, manager.getEntityData<C0>(e0)->y);
+    CHECK_EQ(2000, manager.getEntityData<C0>(e1)->x);
+    CHECK_EQ(2010, manager.getEntityData<C0>(e1)->y);
 
     Context altC;
     altC.a = 999;
@@ -1029,13 +1028,13 @@ TEST(EC, context)
 
     manager.changeForMatchingFunctionContext(fid, &altC);
     manager.callForMatchingFunctions();
-    EXPECT_EQ(999, manager.getEntityData<C0>(e0)->x);
-    EXPECT_EQ(1999, manager.getEntityData<C0>(e0)->y);
-    EXPECT_EQ(999, manager.getEntityData<C0>(e1)->x);
-    EXPECT_EQ(1999, manager.getEntityData<C0>(e1)->y);
+    CHECK_EQ(999, manager.getEntityData<C0>(e0)->x);
+    CHECK_EQ(1999, manager.getEntityData<C0>(e0)->y);
+    CHECK_EQ(999, manager.getEntityData<C0>(e1)->x);
+    CHECK_EQ(1999, manager.getEntityData<C0>(e1)->y);
 }
 
-TEST(EC, FunctionStorageOrder)
+void TEST_EC_FunctionStorageOrder()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
     auto e0 = manager.addEntity();
@@ -1073,15 +1072,15 @@ TEST(EC, FunctionStorageOrder)
 
     manager.callForMatchingFunctions();
 
-    EXPECT_EQ(1, v.at(0));
-    EXPECT_EQ(2, v.at(1));
-    EXPECT_EQ(3, v.at(2));
-    EXPECT_EQ(4, v.at(3));
-    EXPECT_EQ(5, v.at(4));
-    EXPECT_EQ(6, v.at(5));
+    CHECK_EQ(1, v.at(0));
+    CHECK_EQ(2, v.at(1));
+    CHECK_EQ(3, v.at(2));
+    CHECK_EQ(4, v.at(3));
+    CHECK_EQ(5, v.at(4));
+    CHECK_EQ(6, v.at(5));
 }
 
-TEST(EC, forMatchingSimple) {
+void TEST_EC_forMatchingSimple() {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
     auto e0 = manager.addEntity();
@@ -1107,14 +1106,14 @@ TEST(EC, forMatchingSimple) {
     // verify
     {
         C0 *c0 = manager.getEntityData<C0>(e0);
-        EXPECT_EQ(c0->x, 10);
-        EXPECT_EQ(c0->y, 11);
+        CHECK_EQ(c0->x, 10);
+        CHECK_EQ(c0->y, 11);
         c0 = manager.getEntityData<C0>(e1);
-        EXPECT_EQ(c0->x, 12);
-        EXPECT_EQ(c0->y, 13);
+        CHECK_EQ(c0->x, 12);
+        CHECK_EQ(c0->y, 13);
         c0 = manager.getEntityData<C0>(e2);
-        EXPECT_EQ(c0->x, 14);
-        EXPECT_EQ(c0->y, 15);
+        CHECK_EQ(c0->x, 14);
+        CHECK_EQ(c0->y, 15);
     }
 
     auto e3 = manager.addEntity();
@@ -1133,21 +1132,21 @@ TEST(EC, forMatchingSimple) {
     // verify
     {
         C0 *c0 = manager.getEntityData<C0>(e0);
-        EXPECT_EQ(c0->x, 10);
-        EXPECT_EQ(c0->y, 11);
+        CHECK_EQ(c0->x, 10);
+        CHECK_EQ(c0->y, 11);
         c0 = manager.getEntityData<C0>(e1);
-        EXPECT_EQ(c0->x, 12);
-        EXPECT_EQ(c0->y, 13);
+        CHECK_EQ(c0->x, 12);
+        CHECK_EQ(c0->y, 13);
         c0 = manager.getEntityData<C0>(e2);
-        EXPECT_EQ(c0->x, 114);
-        EXPECT_EQ(c0->y, 115);
+        CHECK_EQ(c0->x, 114);
+        CHECK_EQ(c0->y, 115);
         c0 = manager.getEntityData<C0>(e3);
-        EXPECT_EQ(c0->x, 106);
-        EXPECT_EQ(c0->y, 107);
+        CHECK_EQ(c0->x, 106);
+        CHECK_EQ(c0->y, 107);
     }
 }
 
-TEST(EC, forMatchingIterableFn)
+void TEST_EC_forMatchingIterableFn()
 {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
     auto e0 = manager.addEntity();
@@ -1180,16 +1179,16 @@ TEST(EC, forMatchingIterableFn)
 
     {
         auto* c = manager.getEntityComponent<C0>(e0);
-        EXPECT_EQ(c->x, 1);
-        EXPECT_EQ(c->y, 2);
+        CHECK_EQ(c->x, 1);
+        CHECK_EQ(c->y, 2);
 
         c = manager.getEntityComponent<C0>(e1);
-        EXPECT_EQ(c->x, 3);
-        EXPECT_EQ(c->y, 4);
+        CHECK_EQ(c->x, 3);
+        CHECK_EQ(c->y, 4);
 
         c = manager.getEntityComponent<C0>(e2);
-        EXPECT_EQ(c->x, 5);
-        EXPECT_EQ(c->y, 6);
+        CHECK_EQ(c->x, 5);
+        CHECK_EQ(c->y, 6);
     }
 
     {
@@ -1205,16 +1204,16 @@ TEST(EC, forMatchingIterableFn)
 
     {
         auto* c = manager.getEntityComponent<C0>(e0);
-        EXPECT_EQ(c->x, 1);
-        EXPECT_EQ(c->y, 2);
+        CHECK_EQ(c->x, 1);
+        CHECK_EQ(c->y, 2);
 
         c = manager.getEntityComponent<C0>(e1);
-        EXPECT_EQ(c->x, 3);
-        EXPECT_EQ(c->y, 4);
+        CHECK_EQ(c->x, 3);
+        CHECK_EQ(c->y, 4);
 
         c = manager.getEntityComponent<C0>(e2);
-        EXPECT_EQ(c->x, 5);
-        EXPECT_EQ(c->y, 6);
+        CHECK_EQ(c->x, 5);
+        CHECK_EQ(c->y, 6);
     }
 
     {
@@ -1230,16 +1229,16 @@ TEST(EC, forMatchingIterableFn)
 
     {
         auto* c = manager.getEntityComponent<C0>(e0);
-        EXPECT_EQ(c->x, 1);
-        EXPECT_EQ(c->y, 2);
+        CHECK_EQ(c->x, 1);
+        CHECK_EQ(c->y, 2);
 
         c = manager.getEntityComponent<C0>(e1);
-        EXPECT_EQ(c->x, 3);
-        EXPECT_EQ(c->y, 4);
+        CHECK_EQ(c->x, 3);
+        CHECK_EQ(c->y, 4);
 
         c = manager.getEntityComponent<C0>(e2);
-        EXPECT_EQ(c->x, 6);
-        EXPECT_EQ(c->y, 7);
+        CHECK_EQ(c->x, 6);
+        CHECK_EQ(c->y, 7);
     }
 
     {
@@ -1255,16 +1254,16 @@ TEST(EC, forMatchingIterableFn)
 
     {
         auto* c = manager.getEntityComponent<C0>(e0);
-        EXPECT_EQ(c->x, 1);
-        EXPECT_EQ(c->y, 2);
+        CHECK_EQ(c->x, 1);
+        CHECK_EQ(c->y, 2);
 
         c = manager.getEntityComponent<C0>(e1);
-        EXPECT_EQ(c->x, 13);
-        EXPECT_EQ(c->y, 14);
+        CHECK_EQ(c->x, 13);
+        CHECK_EQ(c->y, 14);
 
         c = manager.getEntityComponent<C0>(e2);
-        EXPECT_EQ(c->x, 16);
-        EXPECT_EQ(c->y, 17);
+        CHECK_EQ(c->x, 16);
+        CHECK_EQ(c->y, 17);
     }
 
     {
@@ -1280,16 +1279,16 @@ TEST(EC, forMatchingIterableFn)
 
     {
         auto* c = manager.getEntityComponent<C0>(e0);
-        EXPECT_EQ(c->x, 1);
-        EXPECT_EQ(c->y, 2);
+        CHECK_EQ(c->x, 1);
+        CHECK_EQ(c->y, 2);
 
         c = manager.getEntityComponent<C0>(e1);
-        EXPECT_EQ(c->x, 13);
-        EXPECT_EQ(c->y, 14);
+        CHECK_EQ(c->x, 13);
+        CHECK_EQ(c->y, 14);
 
         c = manager.getEntityComponent<C0>(e2);
-        EXPECT_EQ(c->x, 16);
-        EXPECT_EQ(c->y, 17);
+        CHECK_EQ(c->x, 16);
+        CHECK_EQ(c->y, 17);
     }
 
     {
@@ -1305,16 +1304,16 @@ TEST(EC, forMatchingIterableFn)
 
     {
         auto* c = manager.getEntityComponent<C0>(e0);
-        EXPECT_EQ(c->x, 101);
-        EXPECT_EQ(c->y, 102);
+        CHECK_EQ(c->x, 101);
+        CHECK_EQ(c->y, 102);
 
         c = manager.getEntityComponent<C0>(e1);
-        EXPECT_EQ(c->x, 113);
-        EXPECT_EQ(c->y, 114);
+        CHECK_EQ(c->x, 113);
+        CHECK_EQ(c->y, 114);
 
         c = manager.getEntityComponent<C0>(e2);
-        EXPECT_EQ(c->x, 116);
-        EXPECT_EQ(c->y, 117);
+        CHECK_EQ(c->x, 116);
+        CHECK_EQ(c->y, 117);
     }
 
 
@@ -1331,16 +1330,16 @@ TEST(EC, forMatchingIterableFn)
 
     {
         auto* c = manager.getEntityComponent<C0>(e0);
-        EXPECT_EQ(c->x, 101);
-        EXPECT_EQ(c->y, 102);
+        CHECK_EQ(c->x, 101);
+        CHECK_EQ(c->y, 102);
 
         c = manager.getEntityComponent<C0>(e1);
-        EXPECT_EQ(c->x, 113);
-        EXPECT_EQ(c->y, 114);
+        CHECK_EQ(c->x, 113);
+        CHECK_EQ(c->y, 114);
 
         c = manager.getEntityComponent<C0>(e2);
-        EXPECT_EQ(c->x, 116);
-        EXPECT_EQ(c->y, 117);
+        CHECK_EQ(c->x, 116);
+        CHECK_EQ(c->y, 117);
     }
 }
 
@@ -1348,7 +1347,7 @@ TEST(EC, forMatchingIterableFn)
 // callForMatchingFunction(s) can fail to call fns on
 // the correct entities.
 // Fixed in commit e0f30db951fcedd0ec51c680bd60a2157bd355a6
-TEST(EC, MultiThreadedForMatching) {
+void TEST_EC_MultiThreadedForMatching() {
     EC::Manager<ListComponentsAll, ListTagsAll> manager;
 
     std::size_t first = manager.addEntity();
@@ -1366,16 +1365,16 @@ TEST(EC, MultiThreadedForMatching) {
         }
     }, &manager);
 
-    EXPECT_TRUE(manager.isAlive(first));
-    EXPECT_TRUE(manager.isAlive(second));
+    CHECK_TRUE(manager.isAlive(first));
+    CHECK_TRUE(manager.isAlive(second));
 
     manager.callForMatchingFunction(fnIdx, true);
 
-    EXPECT_TRUE(manager.isAlive(first));
-    EXPECT_FALSE(manager.isAlive(second));
+    CHECK_TRUE(manager.isAlive(first));
+    CHECK_FALSE(manager.isAlive(second));
 }
 
-TEST(EC, ManagerWithLowThreadCount) {
+void TEST_EC_ManagerWithLowThreadCount() {
     EC::Manager<ListComponentsAll, ListTagsAll, 1> manager;
 
     std::array<std::size_t, 10> entities;
@@ -1386,8 +1385,8 @@ TEST(EC, ManagerWithLowThreadCount) {
 
     for(const auto &id : entities) {
         auto *component = manager.getEntityComponent<C0>(id);
-        EXPECT_EQ(component->x, 0);
-        EXPECT_EQ(component->y, 0);
+        CHECK_EQ(component->x, 0);
+        CHECK_EQ(component->y, 0);
     }
 
     manager.forMatchingSignature<EC::Meta::TypeList<C0> >([] (std::size_t /*id*/, void* /*ud*/, C0 *c) {
@@ -1397,12 +1396,12 @@ TEST(EC, ManagerWithLowThreadCount) {
 
     for(const auto &id : entities) {
         auto *component = manager.getEntityComponent<C0>(id);
-        EXPECT_EQ(component->x, 1);
-        EXPECT_EQ(component->y, 1);
+        CHECK_EQ(component->x, 1);
+        CHECK_EQ(component->y, 1);
     }
 }
 
-TEST(EC, ManagerDeferredDeletions) {
+void TEST_EC_ManagerDeferredDeletions() {
     using ManagerType = EC::Manager<ListComponentsAll, ListTagsAll, 8>;
     ManagerType manager;
 
@@ -1427,14 +1426,14 @@ TEST(EC, ManagerDeferredDeletions) {
     for(std::size_t i = 0; i < entities.size(); ++i) {
         if (entities.at(i) >= entities.size() / 4
                 && entities.at(i) < entities.size() * 3 / 4) {
-            EXPECT_FALSE(manager.isAlive(entities.at(i)));
+            CHECK_FALSE(manager.isAlive(entities.at(i)));
         } else {
-            EXPECT_TRUE(manager.isAlive(entities.at(i)));
+            CHECK_TRUE(manager.isAlive(entities.at(i)));
         }
     }
 }
 
-TEST(EC, NestedThreadPoolTasks) {
+void TEST_EC_NestedThreadPoolTasks() {
     using ManagerType = EC::Manager<ListComponentsAll, ListTagsAll, 2>;
     ManagerType manager;
 
@@ -1449,14 +1448,14 @@ TEST(EC, NestedThreadPoolTasks) {
 
         manager->forMatchingSignature<EC::Meta::TypeList<C0>>([id] (std::size_t inner_id, void* data, C0 *inner_c) {
             const C0 *const outer_c = (C0*)data;
-            EXPECT_EQ(id, outer_c->x);
-            EXPECT_EQ(inner_id, inner_c->x);
+            CHECK_EQ(id, outer_c->x);
+            CHECK_EQ(inner_id, inner_c->x);
             if (id == inner_id) {
-                EXPECT_EQ(outer_c->x, inner_c->x);
-                EXPECT_EQ(outer_c->y, inner_c->y);
+                CHECK_EQ(outer_c->x, inner_c->x);
+                CHECK_EQ(outer_c->y, inner_c->y);
             } else {
-                EXPECT_NE(outer_c->x, inner_c->x);
-                EXPECT_NE(outer_c->y, inner_c->y);
+                CHECK_NE(outer_c->x, inner_c->x);
+                CHECK_NE(outer_c->y, inner_c->y);
             }
         }, c, true);
     }, &manager, true);
diff --git a/src/test/Main.cpp b/src/test/Main.cpp
index 73f36b4..fb5875a 100644
--- a/src/test/Main.cpp
+++ b/src/test/Main.cpp
@@ -1,8 +1,44 @@
+#include "test_helpers.h"
 
-#include <gtest/gtest.h>
+int checks_checked = 0;
+int checks_passed = 0;
 
-int main(int argc, char** argv)
-{
-    ::testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
+int main() {
+    TEST_EC_Bitset();
+    TEST_EC_Manager();
+    TEST_EC_MoveComponentWithUniquePtr();
+    TEST_EC_DeletedEntities();
+    TEST_EC_FunctionStorage();
+    TEST_EC_DeletedEntityID();
+    TEST_EC_MultiThreaded();
+    TEST_EC_ForMatchingSignatures();
+    TEST_EC_forMatchingPtrs();
+    TEST_EC_context();
+    TEST_EC_FunctionStorageOrder();
+    TEST_EC_forMatchingSimple();
+    TEST_EC_forMatchingIterableFn();
+    TEST_EC_MultiThreadedForMatching();
+    TEST_EC_ManagerWithLowThreadCount();
+    TEST_EC_ManagerDeferredDeletions();
+    TEST_EC_NestedThreadPoolTasks();
+
+    TEST_Meta_Contains();
+    TEST_Meta_ContainsAll();
+    TEST_Meta_IndexOf();
+    TEST_Meta_Bitset();
+    TEST_Meta_Combine();
+    TEST_Meta_Morph();
+    TEST_Meta_TypeListGet();
+    TEST_Meta_ForEach();
+    TEST_Meta_Matching();
+
+    TEST_ECThreadPool_OneThread();
+    TEST_ECThreadPool_Simple();
+    TEST_ECThreadPool_QueryCount();
+    TEST_ECThreadPool_easyStartAndWait();
+
+    std::cout << "checks_checked: " << checks_checked << '\n'
+              << "checks_passed:  " << checks_passed << std::endl;
+
+    return checks_checked == checks_passed ? 0 : 1;
 }
diff --git a/src/test/MetaTest.cpp b/src/test/MetaTest.cpp
index 02f966c..adf87d5 100644
--- a/src/test/MetaTest.cpp
+++ b/src/test/MetaTest.cpp
@@ -1,5 +1,4 @@
-
-#include <gtest/gtest.h>
+#include "test_helpers.h"
 
 #include <tuple>
 #include <EC/Meta/Meta.hpp>
@@ -28,179 +27,179 @@ struct Storage
     using type = std::tuple<std::vector<STypes>... >;
 };
 
-TEST(Meta, Contains)
+void TEST_Meta_Contains()
 {
     int size = ListComponentsAll::size;
-    EXPECT_EQ(size, 4);
+    CHECK_EQ(size, 4);
 
     bool result = EC::Meta::Contains<C0, ListComponentsAll>::value;
-    EXPECT_TRUE(result);
+    CHECK_TRUE(result);
     result = EC::Meta::Contains<C1, ListComponentsAll>::value;
-    EXPECT_TRUE(result);
+    CHECK_TRUE(result);
     result = EC::Meta::Contains<C2, ListComponentsAll>::value;
-    EXPECT_TRUE(result);
+    CHECK_TRUE(result);
     result = EC::Meta::Contains<C3, ListComponentsAll>::value;
-    EXPECT_TRUE(result);
+    CHECK_TRUE(result);
 
     size = ListComponentsSome::size;
-    EXPECT_EQ(size, 2);
+    CHECK_EQ(size, 2);
 
     result = EC::Meta::Contains<C0, ListComponentsSome>::value;
-    EXPECT_FALSE(result);
+    CHECK_FALSE(result);
     result = EC::Meta::Contains<C1, ListComponentsSome>::value;
-    EXPECT_TRUE(result);
+    CHECK_TRUE(result);
     result = EC::Meta::Contains<C2, ListComponentsSome>::value;
-    EXPECT_FALSE(result);
+    CHECK_FALSE(result);
     result = EC::Meta::Contains<C3, ListComponentsSome>::value;
-    EXPECT_TRUE(result);
+    CHECK_TRUE(result);
 }
 
-TEST(Meta, ContainsAll)
+void TEST_Meta_ContainsAll()
 {
     bool contains = EC::Meta::ContainsAll<ListComponentsSome, ListComponentsAll>::value;
-    EXPECT_TRUE(contains);
+    CHECK_TRUE(contains);
 
     contains = EC::Meta::ContainsAll<ListComponentsAll, ListComponentsSome>::value;
-    EXPECT_FALSE(contains);
+    CHECK_FALSE(contains);
 
     contains = EC::Meta::ContainsAll<ListComponentsAll, ListComponentsAll>::value;
-    EXPECT_TRUE(contains);
+    CHECK_TRUE(contains);
 }
 
-TEST(Meta, IndexOf)
+void TEST_Meta_IndexOf()
 {
     int index = EC::Meta::IndexOf<C0, ListComponentsAll>::value;
-    EXPECT_EQ(index, 0);
+    CHECK_EQ(index, 0);
     index = EC::Meta::IndexOf<C1, ListComponentsAll>::value;
-    EXPECT_EQ(index, 1);
+    CHECK_EQ(index, 1);
     index = EC::Meta::IndexOf<C2, ListComponentsAll>::value;
-    EXPECT_EQ(index, 2);
+    CHECK_EQ(index, 2);
     index = EC::Meta::IndexOf<C3, ListComponentsAll>::value;
-    EXPECT_EQ(index, 3);
+    CHECK_EQ(index, 3);
     index = EC::Meta::IndexOf<T0, ListComponentsAll>::value;
-    EXPECT_EQ(index, 4);
+    CHECK_EQ(index, 4);
 
     index = EC::Meta::IndexOf<C1, ListComponentsSome>::value;
-    EXPECT_EQ(index, 0);
+    CHECK_EQ(index, 0);
     index = EC::Meta::IndexOf<C3, ListComponentsSome>::value;
-    EXPECT_EQ(index, 1);
+    CHECK_EQ(index, 1);
     index = EC::Meta::IndexOf<C2, ListComponentsSome>::value;
-    EXPECT_EQ(index, 2);
+    CHECK_EQ(index, 2);
 }
 
-TEST(Meta, Bitset)
+void TEST_Meta_Bitset()
 {
     EC::Bitset<ListComponentsAll, ListTagsAll> bitset;
-    EXPECT_EQ(bitset.size(), ListComponentsAll::size + ListTagsAll::size + 1);
+    CHECK_EQ(bitset.size(), ListComponentsAll::size + ListTagsAll::size + 1);
 
     bitset[EC::Meta::IndexOf<C1, ListComponentsAll>::value] = true;
-    EXPECT_TRUE(bitset.getComponentBit<C1>());
+    CHECK_TRUE(bitset.getComponentBit<C1>());
     bitset.flip();
-    EXPECT_FALSE(bitset.getComponentBit<C1>());
+    CHECK_FALSE(bitset.getComponentBit<C1>());
 
     bitset.reset();
     bitset[ListComponentsAll::size + EC::Meta::IndexOf<T0, ListTagsAll>::value] = true;
-    EXPECT_TRUE(bitset.getTagBit<T0>());
+    CHECK_TRUE(bitset.getTagBit<T0>());
     bitset.flip();
-    EXPECT_FALSE(bitset.getTagBit<T0>());
+    CHECK_FALSE(bitset.getTagBit<T0>());
 }
 
-TEST(Meta, Combine)
+void TEST_Meta_Combine()
 {
     using CombinedAll = EC::Meta::Combine<ListComponentsAll, ListTagsAll>;
 
     int listAllTemp = ListAll::size;
     int combinedAllTemp = CombinedAll::size;
-    EXPECT_EQ(combinedAllTemp, listAllTemp);
+    CHECK_EQ(combinedAllTemp, listAllTemp);
 
     listAllTemp = EC::Meta::IndexOf<C0, ListAll>::value;
     combinedAllTemp = EC::Meta::IndexOf<C0, CombinedAll>::value;
-    EXPECT_EQ(combinedAllTemp, listAllTemp);
+    CHECK_EQ(combinedAllTemp, listAllTemp);
 
     listAllTemp = EC::Meta::IndexOf<C1, ListAll>::value;
     combinedAllTemp = EC::Meta::IndexOf<C1, CombinedAll>::value;
-    EXPECT_EQ(combinedAllTemp, listAllTemp);
+    CHECK_EQ(combinedAllTemp, listAllTemp);
 
     listAllTemp = EC::Meta::IndexOf<C2, ListAll>::value;
     combinedAllTemp = EC::Meta::IndexOf<C2, CombinedAll>::value;
-    EXPECT_EQ(combinedAllTemp, listAllTemp);
+    CHECK_EQ(combinedAllTemp, listAllTemp);
 
     listAllTemp = EC::Meta::IndexOf<C3, ListAll>::value;
     combinedAllTemp = EC::Meta::IndexOf<C3, CombinedAll>::value;
-    EXPECT_EQ(combinedAllTemp, listAllTemp);
+    CHECK_EQ(combinedAllTemp, listAllTemp);
 
     listAllTemp = EC::Meta::IndexOf<T0, ListAll>::value;
     combinedAllTemp = EC::Meta::IndexOf<T0, CombinedAll>::value;
-    EXPECT_EQ(combinedAllTemp, listAllTemp);
+    CHECK_EQ(combinedAllTemp, listAllTemp);
 
     listAllTemp = EC::Meta::IndexOf<T1, ListAll>::value;
     combinedAllTemp = EC::Meta::IndexOf<T1, CombinedAll>::value;
-    EXPECT_EQ(combinedAllTemp, listAllTemp);
+    CHECK_EQ(combinedAllTemp, listAllTemp);
 
     bool same = std::is_same<CombinedAll, ListAll>::value;
-    EXPECT_TRUE(same);
+    CHECK_TRUE(same);
 }
 
-TEST(Meta, Morph)
+void TEST_Meta_Morph()
 {
     using TupleAll = std::tuple<C0, C1, C2, C3>;
     using MorphedTuple = EC::Meta::Morph<TupleAll, EC::Meta::TypeList<> >;
 
     int morphedTupleTemp = MorphedTuple::size;
     int componentsTemp = ListComponentsAll::size;
-    EXPECT_EQ(morphedTupleTemp, componentsTemp);
+    CHECK_EQ(morphedTupleTemp, componentsTemp);
 
     morphedTupleTemp = EC::Meta::IndexOf<C0, MorphedTuple>::value;
     componentsTemp = EC::Meta::IndexOf<C0, ListComponentsAll>::value;
-    EXPECT_EQ(morphedTupleTemp, componentsTemp);
+    CHECK_EQ(morphedTupleTemp, componentsTemp);
 
     morphedTupleTemp = EC::Meta::IndexOf<C1, MorphedTuple>::value;
     componentsTemp = EC::Meta::IndexOf<C1, ListComponentsAll>::value;
-    EXPECT_EQ(morphedTupleTemp, componentsTemp);
+    CHECK_EQ(morphedTupleTemp, componentsTemp);
 
     morphedTupleTemp = EC::Meta::IndexOf<C2, MorphedTuple>::value;
     componentsTemp = EC::Meta::IndexOf<C2, ListComponentsAll>::value;
-    EXPECT_EQ(morphedTupleTemp, componentsTemp);
+    CHECK_EQ(morphedTupleTemp, componentsTemp);
 
     morphedTupleTemp = EC::Meta::IndexOf<C3, MorphedTuple>::value;
     componentsTemp = EC::Meta::IndexOf<C3, ListComponentsAll>::value;
-    EXPECT_EQ(morphedTupleTemp, componentsTemp);
+    CHECK_EQ(morphedTupleTemp, componentsTemp);
 
     using MorphedComponents = EC::Meta::Morph<ListComponentsAll, std::tuple<> >;
     bool isSame = std::is_same<MorphedComponents, TupleAll>::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 
 
     using ComponentsStorage = EC::Meta::Morph<ListComponentsAll, Storage<> >;
 
     isSame = std::is_same<ComponentsStorage::type,
         std::tuple<std::vector<C0>, std::vector<C1>, std::vector<C2>, std::vector<C3> > >::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 }
 
-TEST(Meta, TypeListGet)
+void TEST_Meta_TypeListGet()
 {
     bool isSame = std::is_same<C0, EC::Meta::TypeListGet<ListAll, 0> >::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 
     isSame = std::is_same<C1, EC::Meta::TypeListGet<ListAll, 1> >::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 
     isSame = std::is_same<C2, EC::Meta::TypeListGet<ListAll, 2> >::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 
     isSame = std::is_same<C3, EC::Meta::TypeListGet<ListAll, 3> >::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 
     const unsigned int temp = 4;
     isSame = std::is_same<T0, EC::Meta::TypeListGet<ListAll, temp> >::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 
     isSame = std::is_same<T1, EC::Meta::TypeListGet<ListAll, 5> >::value;
-    EXPECT_TRUE(isSame);
+    CHECK_TRUE(isSame);
 }
 
-TEST(Meta, ForEach)
+void TEST_Meta_ForEach()
 {
     EC::Bitset<ListComponentsAll, ListTagsAll> bitset;
 
@@ -210,32 +209,32 @@ TEST(Meta, ForEach)
 
     EC::Meta::forEach<ListComponentsSome>(setBits);
 
-    EXPECT_FALSE(bitset[0]);
-    EXPECT_TRUE(bitset[1]);
-    EXPECT_FALSE(bitset[2]);
-    EXPECT_TRUE(bitset[3]);
-    EXPECT_FALSE(bitset[4]);
-    EXPECT_FALSE(bitset[5]);
+    CHECK_FALSE(bitset[0]);
+    CHECK_TRUE(bitset[1]);
+    CHECK_FALSE(bitset[2]);
+    CHECK_TRUE(bitset[3]);
+    CHECK_FALSE(bitset[4]);
+    CHECK_FALSE(bitset[5]);
 }
 
-TEST(Meta, Matching)
+void TEST_Meta_Matching()
 {
     {
         using Matched = EC::Meta::Matching<ListComponentsSome, ListComponentsAll>::type;
         bool isSame = std::is_same<ListComponentsSome, Matched>::value;
-        EXPECT_TRUE(isSame);
+        CHECK_TRUE(isSame);
     }
 
     {
         using Matched = EC::Meta::Matching<ListSome, ListAll>::type;
         bool isSame = std::is_same<ListSome, Matched>::value;
-        EXPECT_TRUE(isSame);
+        CHECK_TRUE(isSame);
     }
 
     {
         using Matched = EC::Meta::Matching<ListTagsAll, ListComponentsAll>::type;
         bool isSame = std::is_same<EC::Meta::TypeList<>, Matched>::value;
-        EXPECT_TRUE(isSame);
+        CHECK_TRUE(isSame);
     }
 }
 
diff --git a/src/test/ThreadPoolTest.cpp b/src/test/ThreadPoolTest.cpp
index ea2f161..bf77356 100644
--- a/src/test/ThreadPoolTest.cpp
+++ b/src/test/ThreadPoolTest.cpp
@@ -1,11 +1,11 @@
-#include <gtest/gtest.h>
+#include "test_helpers.h"
 
 #include <EC/ThreadPool.hpp>
 
 using OneThreadPool = EC::ThreadPool<1>;
 using ThreeThreadPool = EC::ThreadPool<3>;
 
-TEST(ECThreadPool, OneThread) {
+void TEST_ECThreadPool_OneThread() {
     OneThreadPool p;
     std::atomic_int data;
     data.store(0);
@@ -36,7 +36,7 @@ TEST(ECThreadPool, OneThread) {
     ASSERT_EQ(data.load(), 11);
 }
 
-TEST(ECThreadPool, Simple) {
+void TEST_ECThreadPool_Simple() {
     ThreeThreadPool p;
     std::atomic_int data;
     data.store(0);
@@ -67,7 +67,7 @@ TEST(ECThreadPool, Simple) {
     ASSERT_EQ(data.load(), 11);
 }
 
-TEST(ECThreadPool, QueryCount) {
+void TEST_ECThreadPool_QueryCount() {
     {
         OneThreadPool oneP;
         ASSERT_EQ(1, oneP.getMaxThreadCount());
@@ -78,7 +78,7 @@ TEST(ECThreadPool, QueryCount) {
     }
 }
 
-TEST(ECThreadPool, easyStartAndWait) {
+void TEST_ECThreadPool_easyStartAndWait() {
     std::atomic_int data;
     data.store(0);
     {
@@ -90,7 +90,7 @@ TEST(ECThreadPool, easyStartAndWait) {
             }, &data);
         }
         oneP.easyStartAndWait();
-        EXPECT_EQ(20, data.load());
+        CHECK_EQ(20, data.load());
     }
     {
         ThreeThreadPool threeP;
@@ -101,6 +101,6 @@ TEST(ECThreadPool, easyStartAndWait) {
             }, &data);
         }
         threeP.easyStartAndWait();
-        EXPECT_EQ(40, data.load());
+        CHECK_EQ(40, data.load());
     }
 }
diff --git a/src/test/test_helpers.h b/src/test/test_helpers.h
new file mode 100644
index 0000000..94aa31e
--- /dev/null
+++ b/src/test/test_helpers.h
@@ -0,0 +1,163 @@
+#ifndef SEODISPARATE_COM_ENTITY_COMPONENT_META_SYSTEM_TEST_HELPERS_H_
+#define SEODISPARATE_COM_ENTITY_COMPONENT_META_SYSTEM_TEST_HELPERS_H_
+
+#include <cstring>
+#include <iostream>
+
+extern int checks_checked;
+extern int checks_passed;
+
+// Macros for unit testing.
+
+#define CHECK_TRUE(x)                                                     \
+  do {                                                                    \
+    ++checks_checked;                                                     \
+    if (!(x)) {                                                           \
+      std::cout << "CHECK_TRUE at line " << __LINE__ << " failed: " << #x \
+                << '\n';                                                  \
+    } else {                                                              \
+      ++checks_passed;                                                    \
+    }                                                                     \
+  } while (false);
+#define ASSERT_TRUE(x)                                                    \
+  do {                                                                    \
+    ++checks_checked;                                                     \
+    if (!(x)) {                                                           \
+      std::cout << "CHECK_TRUE at line " << __LINE__ << " failed: " << #x \
+                << '\n';                                                  \
+      return;                                                             \
+    } else {                                                              \
+      ++checks_passed;                                                    \
+    }                                                                     \
+  } while (false);
+#define CHECK_FALSE(x)                                                     \
+  do {                                                                     \
+    ++checks_checked;                                                      \
+    if (x) {                                                               \
+      std::cout << "CHECK_FALSE at line " << __LINE__ << " failed: " << #x \
+                << '\n';                                                   \
+    } else {                                                               \
+      ++checks_passed;                                                     \
+    }                                                                      \
+  } while (false);
+#define ASSERT_FALSE(x)                                                    \
+  do {                                                                     \
+    ++checks_checked;                                                      \
+    if (x) {                                                               \
+      std::cout << "CHECK_FALSE at line " << __LINE__ << " failed: " << #x \
+                << '\n';                                                   \
+      return;                                                              \
+    } else {                                                               \
+      ++checks_passed;                                                     \
+    }                                                                      \
+  } while (false);
+
+#define CHECK_FLOAT(var, value)                                              \
+  do {                                                                       \
+    ++checks_checked;                                                        \
+    if ((var) > (value) - 0.0001F && (var) < (value) + 0.0001F) {            \
+      ++checks_passed;                                                       \
+    } else {                                                                 \
+      std::cout << "CHECK_FLOAT at line " << __LINE__ << " failed: " << #var \
+                << " != " << #value << '\n';                                 \
+    }                                                                        \
+  } while (false);
+
+#define CHECK_EQ(var, value)                                              \
+  do {                                                                    \
+    ++checks_checked;                                                     \
+    if ((var) == (value)) {                                               \
+      ++checks_passed;                                                    \
+    } else {                                                              \
+      std::cout << "CHECK_EQ at line " << __LINE__ << " failed: " << #var \
+                << " != " << #value << '\n';                              \
+    }                                                                     \
+  } while (false);
+#define ASSERT_EQ(var, value)                                              \
+  do {                                                                     \
+    ++checks_checked;                                                      \
+    if ((var) == (value)) {                                                \
+      ++checks_passed;                                                     \
+    } else {                                                               \
+      std::cout << "ASSERT_EQ at line " << __LINE__ << " failed: " << #var \
+                << " != " << #value << '\n';                               \
+      return;                                                              \
+    }                                                                      \
+  } while (false);
+#define CHECK_NE(var, value)                                              \
+  do {                                                                    \
+    ++checks_checked;                                                     \
+    if ((var) != (value)) {                                               \
+      ++checks_passed;                                                    \
+    } else {                                                              \
+      std::cout << "CHECK_NE at line " << __LINE__ << " failed: " << #var \
+                << " == " << #value << '\n';                              \
+    }                                                                     \
+  } while (false);
+#define CHECK_GE(var, value)                                              \
+  do {                                                                    \
+    ++checks_checked;                                                     \
+    if ((var) >= (value)) {                                               \
+      ++checks_passed;                                                    \
+    } else {                                                              \
+      std::cout << "CHECK_GE at line " << __LINE__ << " failed: " << #var \
+                << " < " << #value << '\n';                               \
+    }                                                                     \
+  } while (false);
+#define CHECK_LE(var, value)                                              \
+  do {                                                                    \
+    ++checks_checked;                                                     \
+    if ((var) <= (value)) {                                               \
+      ++checks_passed;                                                    \
+    } else {                                                              \
+      std::cout << "CHECK_LE at line " << __LINE__ << " failed: " << #var \
+                << " > " << #value << '\n';                               \
+    }                                                                     \
+  } while (false);
+
+#define CHECK_STREQ(str_a, str_b)                                             \
+  do {                                                                        \
+    ++checks_checked;                                                         \
+    if (std::strcmp((str_a), (str_b)) == 0) {                                 \
+      ++checks_passed;                                                        \
+    } else {                                                                  \
+      std::cout << "CHECK_STREQ at line " << __LINE__ << "failed: " << #str_a \
+                << " != " << #str_b << '\n';                                  \
+    }                                                                         \
+  } while (false);
+
+// Tests.
+
+void TEST_EC_Bitset();
+void TEST_EC_Manager();
+void TEST_EC_MoveComponentWithUniquePtr();
+void TEST_EC_DeletedEntities();
+void TEST_EC_FunctionStorage();
+void TEST_EC_DeletedEntityID();
+void TEST_EC_MultiThreaded();
+void TEST_EC_ForMatchingSignatures();
+void TEST_EC_forMatchingPtrs();
+void TEST_EC_context();
+void TEST_EC_FunctionStorageOrder();
+void TEST_EC_forMatchingSimple();
+void TEST_EC_forMatchingIterableFn();
+void TEST_EC_MultiThreadedForMatching();
+void TEST_EC_ManagerWithLowThreadCount();
+void TEST_EC_ManagerDeferredDeletions();
+void TEST_EC_NestedThreadPoolTasks();
+
+void TEST_Meta_Contains();
+void TEST_Meta_ContainsAll();
+void TEST_Meta_IndexOf();
+void TEST_Meta_Bitset();
+void TEST_Meta_Combine();
+void TEST_Meta_Morph();
+void TEST_Meta_TypeListGet();
+void TEST_Meta_ForEach();
+void TEST_Meta_Matching();
+
+void TEST_ECThreadPool_OneThread();
+void TEST_ECThreadPool_Simple();
+void TEST_ECThreadPool_QueryCount();
+void TEST_ECThreadPool_easyStartAndWait();
+#endif