From ea005510200ed7851496c77d2c15e6d3de75ac7b Mon Sep 17 00:00:00 2001
From: Alec Thomas <alec@swapoff.org>
Date: Tue, 4 Mar 2014 13:26:30 +1100
Subject: Use TEST_CASE_METHOD rather than SECTION.

---
 entityx/Benchmarks_test.cc        | 117 ++++----
 entityx/Entity_test.cc            | 581 +++++++++++++++++++-------------------
 entityx/System_test.cc            |  49 ++--
 entityx/deps/Dependencies_test.cc |  65 ++---
 entityx/help/Pool_test.cc         |   6 +-
 5 files changed, 410 insertions(+), 408 deletions(-)

diff --git a/entityx/Benchmarks_test.cc b/entityx/Benchmarks_test.cc
index e9eb9ef..d0aff02 100644
--- a/entityx/Benchmarks_test.cc
+++ b/entityx/Benchmarks_test.cc
@@ -27,87 +27,90 @@ struct Listener : public Receiver<Listener> {
 struct Position : public Component<Position> {
 };
 
-TEST_CASE("BenchmarksTest", "[entitymanager]") {
+
+struct BenchmarkFixture {
+  BenchmarkFixture() : em(ev) {}
+
   EventManager ev;
-  EntityManager em(ev);
+  EntityManager em;
+};
 
 
-  SECTION("TestCreateEntities") {
-    AutoTimer t;
+TEST_CASE_METHOD(BenchmarkFixture, "TestCreateEntities") {
+  AutoTimer t;
 
-    uint64_t count = 10000000L;
-    cout << "creating " << count << " entities" << endl;
+  uint64_t count = 10000000L;
+  cout << "creating " << count << " entities" << endl;
 
-    for (uint64_t i = 0; i < count; i++) {
-      em.create();
-    }
+  for (uint64_t i = 0; i < count; i++) {
+    em.create();
   }
+}
 
 
-  SECTION("TestDestroyEntities") {
-    uint64_t count = 10000000L;
-    vector<Entity> entities;
-    for (uint64_t i = 0; i < count; i++) {
-      entities.push_back(em.create());
-    }
+TEST_CASE_METHOD(BenchmarkFixture, "TestDestroyEntities") {
+  uint64_t count = 10000000L;
+  vector<Entity> entities;
+  for (uint64_t i = 0; i < count; i++) {
+    entities.push_back(em.create());
+  }
 
-    AutoTimer t;
-    cout << "destroying " << count << " entities" << endl;
+  AutoTimer t;
+  cout << "destroying " << count << " entities" << endl;
 
-    for (auto e : entities) {
-      e.destroy();
-    }
+  for (auto e : entities) {
+    e.destroy();
   }
+}
 
-  SECTION("TestCreateEntitiesWithListener") {
-    Listener listen;
-    ev.subscribe<EntityCreatedEvent>(listen);
+TEST_CASE_METHOD(BenchmarkFixture, "TestCreateEntitiesWithListener") {
+  Listener listen;
+  ev.subscribe<EntityCreatedEvent>(listen);
 
-    uint64_t count = 10000000L;
+  uint64_t count = 10000000L;
 
-    AutoTimer t;
-    cout << "creating " << count << " entities while notifying a single EntityCreatedEvent listener" << endl;
+  AutoTimer t;
+  cout << "creating " << count << " entities while notifying a single EntityCreatedEvent listener" << endl;
 
-    vector<Entity> entities;
-    for (uint64_t i = 0; i < count; i++) {
-      entities.push_back(em.create());
-    }
+  vector<Entity> entities;
+  for (uint64_t i = 0; i < count; i++) {
+    entities.push_back(em.create());
   }
+}
 
-  SECTION("TestDestroyEntitiesWithListener") {
-    Listener listen;
-    ev.subscribe<EntityDestroyedEvent>(listen);
+TEST_CASE_METHOD(BenchmarkFixture, "TestDestroyEntitiesWithListener") {
+  Listener listen;
+  ev.subscribe<EntityDestroyedEvent>(listen);
 
-    uint64_t count = 10000000L;
-    vector<Entity> entities;
-    for (uint64_t i = 0; i < count; i++) {
-      entities.push_back(em.create());
-    }
+  uint64_t count = 10000000L;
+  vector<Entity> entities;
+  for (uint64_t i = 0; i < count; i++) {
+    entities.push_back(em.create());
+  }
 
-    AutoTimer t;
-    cout << "destroying " << count << " entities" << endl;
+  AutoTimer t;
+  cout << "destroying " << count << " entities" << endl;
 
-    for (auto &e : entities) {
-      e.destroy();
-    }
+  for (auto &e : entities) {
+    e.destroy();
   }
+}
 
-  SECTION("TestEntityIteration") {
-    uint64_t count = 10000000L;
-    vector<Entity> entities;
-    for (uint64_t i = 0; i < count; i++) {
-      auto e = em.create();
-      e.assign<Position>();
-      entities.push_back(e);
-    }
+TEST_CASE_METHOD(BenchmarkFixture, "TestEntityIteration") {
+  uint64_t count = 10000000L;
+  vector<Entity> entities;
+  for (uint64_t i = 0; i < count; i++) {
+    auto e = em.create();
+    e.assign<Position>();
+    entities.push_back(e);
+  }
 
-    AutoTimer t;
-    cout << "iterating over " << count << " entities with a component 10 times" << endl;
+  AutoTimer t;
+  cout << "iterating over " << count << " entities with a component 10 times" << endl;
 
-    for (int i = 0; i < 10; ++i) {
-      Position *position;
-      for (auto e : em.entities_with_components<Position>(position)) {
-      }
+  for (int i = 0; i < 10; ++i) {
+    Position *position;
+    for (auto e : em.entities_with_components<Position>(position)) {
     }
   }
 }
diff --git a/entityx/Entity_test.cc b/entityx/Entity_test.cc
index c8693b5..db7ef18 100644
--- a/entityx/Entity_test.cc
+++ b/entityx/Entity_test.cc
@@ -78,341 +78,350 @@ ostream &operator<<(ostream &out, const Tag &tag) {
   return out;
 }
 
-TEST_CASE("EntityManagerTest", "[entitymanager]") {
-  EventManager ev;
-  EntityManager em(ev);
 
-  SECTION("TestCreateEntity") {
-    REQUIRE(em.size() ==  0UL);
+struct EntityManagerFixture {
+  EntityManagerFixture() : em(ev) {}
 
-    Entity e2;
-    REQUIRE(!(e2.valid()));
+  EventManager ev;
+  EntityManager em;
+};
 
-    Entity e = em.create();
-    REQUIRE(e.valid());
-    REQUIRE(em.size() ==  1UL);
 
-    e2 = e;
-    REQUIRE(e2.valid());
-  }
+TEST_CASE_METHOD(EntityManagerFixture, "TestCreateEntity") {
+  REQUIRE(em.size() ==  0UL);
 
-  SECTION("TestEntityAsBoolean") {
-    REQUIRE(em.size() ==  0UL);
-    Entity e = em.create();
-    REQUIRE(e.valid());
-    REQUIRE(em.size() ==  1UL);
-    REQUIRE(!(!e));
+  Entity e2;
+  REQUIRE(!(e2.valid()));
 
-    e.destroy();
+  Entity e = em.create();
+  REQUIRE(e.valid());
+  REQUIRE(em.size() ==  1UL);
+
+  e2 = e;
+  REQUIRE(e2.valid());
+}
 
-    REQUIRE(em.size() ==  0UL);
+TEST_CASE_METHOD(EntityManagerFixture, "TestEntityAsBoolean") {
+  REQUIRE(em.size() ==  0UL);
+  Entity e = em.create();
+  REQUIRE(e.valid());
+  REQUIRE(em.size() ==  1UL);
+  REQUIRE(!(!e));
 
-    REQUIRE(!e);
+  e.destroy();
 
-    Entity e2;  // Not initialized
-    REQUIRE(!e2);
-  }
+  REQUIRE(em.size() ==  0UL);
 
-  SECTION("TestEntityReuse") {
-    Entity e1 = em.create();
-    Entity e2 = e1;
-    auto id = e1.id();
-    REQUIRE(e1.valid());
-    REQUIRE(e2.valid());
-    e1.destroy();
-    REQUIRE(!e1.valid());
-    REQUIRE(!e2.valid());
-    Entity e3 = em.create();
-    // It is assumed that the allocation will reuse the same entity id, though
-    // the version will change.
-    auto new_id = e3.id();
-    REQUIRE(new_id !=  id);
-    REQUIRE((new_id.id() & 0xffffffffUL) == (id.id() & 0xffffffffUL));
-  }
+  REQUIRE(!e);
 
-  SECTION("TestComponentConstruction") {
-    auto e = em.create();
-    auto p = e.assign<Position>(1, 2);
-    auto cp = e.component<Position>();
-    REQUIRE(p ==  cp);
-    REQUIRE(1.0 == Approx(cp->x));
-    REQUIRE(2.0 == Approx(cp->y));
-  }
+  Entity e2;  // Not initialized
+  REQUIRE(!e2);
+}
 
-  SECTION("TestDestroyEntity") {
-    Entity e = em.create();
-    Entity f = em.create();
-    e.assign<Position>();
-    f.assign<Position>();
-    e.assign<Direction>();
-    f.assign<Direction>();
+TEST_CASE_METHOD(EntityManagerFixture, "TestEntityReuse") {
+  Entity e1 = em.create();
+  Entity e2 = e1;
+  auto id = e1.id();
+  REQUIRE(e1.valid());
+  REQUIRE(e2.valid());
+  e1.destroy();
+  REQUIRE(!e1.valid());
+  REQUIRE(!e2.valid());
+  Entity e3 = em.create();
+  // It is assumed that the allocation will reuse the same entity id, though
+  // the version will change.
+  auto new_id = e3.id();
+  REQUIRE(new_id !=  id);
+  REQUIRE((new_id.id() & 0xffffffffUL) == (id.id() & 0xffffffffUL));
+}
 
-    REQUIRE(e.valid());
-    REQUIRE(f.valid());
-    REQUIRE(static_cast<bool>(e.component<Position>()));
-    REQUIRE(static_cast<bool>(e.component<Direction>()));
-    REQUIRE(static_cast<bool>(f.component<Position>()));
-    REQUIRE(static_cast<bool>(f.component<Direction>()));
+TEST_CASE_METHOD(EntityManagerFixture, "TestComponentConstruction") {
+  auto e = em.create();
+  auto p = e.assign<Position>(1, 2);
+  auto cp = e.component<Position>();
+  REQUIRE(p ==  cp);
+  REQUIRE(1.0 == Approx(cp->x));
+  REQUIRE(2.0 == Approx(cp->y));
+}
 
-    e.destroy();
+TEST_CASE_METHOD(EntityManagerFixture, "TestDestroyEntity") {
+  Entity e = em.create();
+  Entity f = em.create();
+  e.assign<Position>();
+  f.assign<Position>();
+  e.assign<Direction>();
+  f.assign<Direction>();
+
+  REQUIRE(e.valid());
+  REQUIRE(f.valid());
+  REQUIRE(static_cast<bool>(e.component<Position>()));
+  REQUIRE(static_cast<bool>(e.component<Direction>()));
+  REQUIRE(static_cast<bool>(f.component<Position>()));
+  REQUIRE(static_cast<bool>(f.component<Direction>()));
+
+  e.destroy();
+
+  REQUIRE(!(e.valid()));
+  REQUIRE(f.valid());
+  REQUIRE(static_cast<bool>(f.component<Position>()));
+  REQUIRE(static_cast<bool>(f.component<Direction>()));
+}
 
-    REQUIRE(!(e.valid()));
-    REQUIRE(f.valid());
-    REQUIRE(static_cast<bool>(f.component<Position>()));
-    REQUIRE(static_cast<bool>(f.component<Direction>()));
-  }
+TEST_CASE_METHOD(EntityManagerFixture, "TestGetEntitiesWithComponent") {
+  Entity e = em.create();
+  Entity f = em.create();
+  Entity g = em.create();
+  e.assign<Position>();
+  e.assign<Direction>();
+  f.assign<Position>();
+  g.assign<Position>();
+  REQUIRE(3 ==  size(em.entities_with_components<Position>()));
+  REQUIRE(1 ==  size(em.entities_with_components<Direction>()));
+}
 
-  SECTION("TestGetEntitiesWithComponent") {
+TEST_CASE_METHOD(EntityManagerFixture, "TestGetEntitiesWithIntersectionOfComponents") {
+  vector<Entity> entities;
+  for (int i = 0; i < 150; ++i) {
     Entity e = em.create();
-    Entity f = em.create();
-    Entity g = em.create();
-    e.assign<Position>();
-    e.assign<Direction>();
-    f.assign<Position>();
-    g.assign<Position>();
-    REQUIRE(3 ==  size(em.entities_with_components<Position>()));
-    REQUIRE(1 ==  size(em.entities_with_components<Direction>()));
+    entities.push_back(e);
+    if (i % 2 == 0) e.assign<Position>();
+    if (i % 3 == 0) e.assign<Direction>();
   }
+  REQUIRE(50 ==  size(em.entities_with_components<Direction>()));
+  REQUIRE(75 ==  size(em.entities_with_components<Position>()));
+  REQUIRE(25 ==  size(em.entities_with_components<Direction, Position>()));
+}
 
-  SECTION("TestGetEntitiesWithIntersectionOfComponents") {
-    vector<Entity> entities;
-    for (int i = 0; i < 150; ++i) {
-      Entity e = em.create();
-      entities.push_back(e);
-      if (i % 2 == 0) e.assign<Position>();
-      if (i % 3 == 0) e.assign<Direction>();
-    }
-    REQUIRE(50 ==  size(em.entities_with_components<Direction>()));
-    REQUIRE(75 ==  size(em.entities_with_components<Position>()));
-    REQUIRE(25 ==  size(em.entities_with_components<Direction, Position>()));
+TEST_CASE_METHOD(EntityManagerFixture, "TestGetEntitiesWithComponentAndUnpacking") {
+  vector<Entity::Id> entities;
+  Entity e = em.create();
+  Entity f = em.create();
+  Entity g = em.create();
+  std::vector<std::pair<Position *, Direction *>> position_directions;
+  position_directions.push_back(std::make_pair(
+      e.assign<Position>(1.0f, 2.0f), e.assign<Direction>(3.0f, 4.0f)));
+  position_directions.push_back(std::make_pair(
+      f.assign<Position>(7.0f, 8.0f), f.assign<Direction>(9.0f, 10.0f)));
+  auto thetag = f.assign<Tag>("tag");
+  g.assign<Position>(5.0f, 6.0f);
+  int i = 0;
+
+  Position *position;
+  REQUIRE(3 ==  size(em.entities_with_components(position)));
+
+  Direction *direction;
+  for (auto unused_entity : em.entities_with_components(position, direction)) {
+    (void)unused_entity;
+    REQUIRE(static_cast<bool>(position));
+    REQUIRE(static_cast<bool>(direction));
+    auto pd = position_directions.at(i);
+    REQUIRE(position ==  pd.first);
+    REQUIRE(direction ==  pd.second);
+    ++i;
   }
-
-  SECTION("TestGetEntitiesWithComponentAndUnpacking") {
-    vector<Entity::Id> entities;
-    Entity e = em.create();
-    Entity f = em.create();
-    Entity g = em.create();
-    std::vector<std::pair<Position *, Direction *>> position_directions;
-    position_directions.push_back(std::make_pair(
-        e.assign<Position>(1.0f, 2.0f), e.assign<Direction>(3.0f, 4.0f)));
-    position_directions.push_back(std::make_pair(
-        f.assign<Position>(7.0f, 8.0f), f.assign<Direction>(9.0f, 10.0f)));
-    auto thetag = f.assign<Tag>("tag");
-    g.assign<Position>(5.0f, 6.0f);
-    int i = 0;
-
-    Position *position;
-    REQUIRE(3 ==  size(em.entities_with_components(position)));
-
-    Direction *direction;
-    for (auto unused_entity : em.entities_with_components(position, direction)) {
-      (void)unused_entity;
-      REQUIRE(static_cast<bool>(position));
-      REQUIRE(static_cast<bool>(direction));
-      auto pd = position_directions.at(i);
-      REQUIRE(position ==  pd.first);
-      REQUIRE(direction ==  pd.second);
-      ++i;
-    }
-    REQUIRE(2 ==  i);
-    Tag *tag;
-    i = 0;
-    for (auto unused_entity :
-         em.entities_with_components(position, direction, tag)) {
-      (void)unused_entity;
-      REQUIRE(static_cast<bool>(position));
-      REQUIRE(static_cast<bool>(direction));
-      REQUIRE(static_cast<bool>(tag));
-      auto pd = position_directions.at(1);
-      REQUIRE(position ==  pd.first);
-      REQUIRE(direction ==  pd.second);
-      REQUIRE(tag ==  thetag);
-      i++;
-    }
-    REQUIRE(1 ==  i);
+  REQUIRE(2 ==  i);
+  Tag *tag;
+  i = 0;
+  for (auto unused_entity :
+       em.entities_with_components(position, direction, tag)) {
+    (void)unused_entity;
+    REQUIRE(static_cast<bool>(position));
+    REQUIRE(static_cast<bool>(direction));
+    REQUIRE(static_cast<bool>(tag));
+    auto pd = position_directions.at(1);
+    REQUIRE(position ==  pd.first);
+    REQUIRE(direction ==  pd.second);
+    REQUIRE(tag ==  thetag);
+    i++;
   }
+  REQUIRE(1 ==  i);
+}
 
-  SECTION("TestUnpack") {
-    Entity e = em.create();
-    auto p = e.assign<Position>(1.0, 2.0);
-    auto d = e.assign<Direction>(3.0, 4.0);
-    auto t = e.assign<Tag>("tag");
-
-    Position *up;
-    Direction *ud;
-    Tag *ut;
-    e.unpack(up);
-    REQUIRE(p ==  up);
-    e.unpack(up, ud);
-    REQUIRE(p ==  up);
-    REQUIRE(d ==  ud);
-    e.unpack(up, ud, ut);
-    REQUIRE(p ==  up);
-    REQUIRE(d ==  ud);
-    REQUIRE(t ==  ut);
-  }
+TEST_CASE_METHOD(EntityManagerFixture, "TestUnpack") {
+  Entity e = em.create();
+  auto p = e.assign<Position>(1.0, 2.0);
+  auto d = e.assign<Direction>(3.0, 4.0);
+  auto t = e.assign<Tag>("tag");
+
+  Position *up;
+  Direction *ud;
+  Tag *ut;
+  e.unpack(up);
+  REQUIRE(p ==  up);
+  e.unpack(up, ud);
+  REQUIRE(p ==  up);
+  REQUIRE(d ==  ud);
+  e.unpack(up, ud, ut);
+  REQUIRE(p ==  up);
+  REQUIRE(d ==  ud);
+  REQUIRE(t ==  ut);
+}
 
-  // gcc 4.7.2 does not allow this struct to be declared locally inside the
-  // SECTION." //" SECTION("TestUnpackNullMissing") {
-  //   Entity e = em.create();
-  //   auto p = e.assign<Position>();
-
-  //   std::shared_ptr<Position> up(reinterpret_cast<Position*>(0Xdeadbeef),
-  // NullDeleter());
-  //   std::shared_ptr<Direction> ud(reinterpret_cast<Direction*>(0Xdeadbeef),
-  // NullDeleter());
-  //   e.unpack<Position, Direction>(up, ud);
-  //   REQUIRE(p ==  up);
-  //   REQUIRE(std::shared_ptr<Direction>() ==  ud);
-  // }
-
-  SECTION("TestComponentIdsDiffer") {
-    REQUIRE(Position::family() !=  Direction::family());
-  }
+// gcc 4.7.2 does not allow this struct to be declared locally inside the
+// TEST_CASE_METHOD.EntityManagerFixture, " //" TEST_CASE_METHOD(EntityManagerFixture, "TestUnpackNullMissing") {
+//   Entity e = em.create();
+//   auto p = e.assign<Position>();
+
+//   std::shared_ptr<Position> up(reinterpret_cast<Position*>(0Xdeadbeef),
+// NullDeleter());
+//   std::shared_ptr<Direction> ud(reinterpret_cast<Direction*>(0Xdeadbeef),
+// NullDeleter());
+//   e.unpack<Position, Direction>(up, ud);
+//   REQUIRE(p ==  up);
+//   REQUIRE(std::shared_ptr<Direction>() ==  ud);
+// }
+
+TEST_CASE_METHOD(EntityManagerFixture, "TestComponentIdsDiffer") {
+  REQUIRE(Position::family() !=  Direction::family());
+}
 
-  SECTION("TestEntityCreatedEvent") {
-    struct EntityCreatedEventReceiver
-        : public Receiver<EntityCreatedEventReceiver> {
-      void receive(const EntityCreatedEvent &event) {
-        created.push_back(event.entity);
-      }
+TEST_CASE_METHOD(EntityManagerFixture, "TestEntityCreatedEvent") {
+  struct EntityCreatedEventReceiver
+      : public Receiver<EntityCreatedEventReceiver> {
+    void receive(const EntityCreatedEvent &event) {
+      created.push_back(event.entity);
+    }
 
-      vector<Entity> created;
-    };
+    vector<Entity> created;
+  };
 
-    EntityCreatedEventReceiver receiver;
-    ev.subscribe<EntityCreatedEvent>(receiver);
+  EntityCreatedEventReceiver receiver;
+  ev.subscribe<EntityCreatedEvent>(receiver);
 
-    REQUIRE(0UL ==  receiver.created.size());
-    for (int i = 0; i < 10; ++i) {
-      em.create();
-    }
-    REQUIRE(10UL ==  receiver.created.size());
+  REQUIRE(0UL ==  receiver.created.size());
+  for (int i = 0; i < 10; ++i) {
+    em.create();
   }
+  REQUIRE(10UL ==  receiver.created.size());
+}
 
-  SECTION("TestEntityDestroyedEvent") {
-    struct EntityDestroyedEventReceiver
-        : public Receiver<EntityDestroyedEventReceiver> {
-      void receive(const EntityDestroyedEvent &event) {
-        destroyed.push_back(event.entity);
-      }
+TEST_CASE_METHOD(EntityManagerFixture, "TestEntityDestroyedEvent") {
+  struct EntityDestroyedEventReceiver
+      : public Receiver<EntityDestroyedEventReceiver> {
+    void receive(const EntityDestroyedEvent &event) {
+      destroyed.push_back(event.entity);
+    }
 
-      vector<Entity> destroyed;
-    };
+    vector<Entity> destroyed;
+  };
 
-    EntityDestroyedEventReceiver receiver;
-    ev.subscribe<EntityDestroyedEvent>(receiver);
+  EntityDestroyedEventReceiver receiver;
+  ev.subscribe<EntityDestroyedEvent>(receiver);
 
-    REQUIRE(0UL ==  receiver.destroyed.size());
-    vector<Entity> entities;
-    for (int i = 0; i < 10; ++i) {
-      entities.push_back(em.create());
-    }
-    REQUIRE(0UL ==  receiver.destroyed.size());
-    for (auto e : entities) {
-      e.destroy();
-    }
-    REQUIRE(entities ==  receiver.destroyed);
+  REQUIRE(0UL ==  receiver.destroyed.size());
+  vector<Entity> entities;
+  for (int i = 0; i < 10; ++i) {
+    entities.push_back(em.create());
+  }
+  REQUIRE(0UL ==  receiver.destroyed.size());
+  for (auto e : entities) {
+    e.destroy();
   }
+  REQUIRE(entities ==  receiver.destroyed);
+}
 
-  SECTION("TestComponentAddedEvent") {
-    struct ComponentAddedEventReceiver
-        : public Receiver<ComponentAddedEventReceiver> {
-      void receive(const ComponentAddedEvent<Position> &event) {
-        auto p = event.component;
-        float n = static_cast<float>(position_events);
-        REQUIRE(p->x ==  n);
-        REQUIRE(p->y ==  n);
-        position_events++;
-      }
-
-      void receive(const ComponentAddedEvent<Direction> &event) {
-        auto p = event.component;
-        float n = static_cast<float>(direction_events);
-        REQUIRE(p->x ==  -n);
-        REQUIRE(p->y ==  -n);
-        direction_events++;
-      }
-
-      int position_events = 0;
-      int direction_events = 0;
-    };
-
-    ComponentAddedEventReceiver receiver;
-    ev.subscribe<ComponentAddedEvent<Position>>(receiver);
-    ev.subscribe<ComponentAddedEvent<Direction>>(receiver);
-
-    REQUIRE(ComponentAddedEvent<Position>::family() !=
-              ComponentAddedEvent<Direction>::family());
-
-    REQUIRE(0 ==  receiver.position_events);
-    REQUIRE(0 ==  receiver.direction_events);
-    for (int i = 0; i < 10; ++i) {
-      Entity e = em.create();
-      e.assign<Position>(static_cast<float>(i), static_cast<float>(i));
-      e.assign<Direction>(static_cast<float>(-i), static_cast<float>(-i));
+TEST_CASE_METHOD(EntityManagerFixture, "TestComponentAddedEvent") {
+  struct ComponentAddedEventReceiver
+      : public Receiver<ComponentAddedEventReceiver> {
+    void receive(const ComponentAddedEvent<Position> &event) {
+      auto p = event.component;
+      float n = static_cast<float>(position_events);
+      REQUIRE(p->x ==  n);
+      REQUIRE(p->y ==  n);
+      position_events++;
     }
-    REQUIRE(10 ==  receiver.position_events);
-    REQUIRE(10 ==  receiver.direction_events);
-  }
 
+    void receive(const ComponentAddedEvent<Direction> &event) {
+      auto p = event.component;
+      float n = static_cast<float>(direction_events);
+      REQUIRE(p->x ==  -n);
+      REQUIRE(p->y ==  -n);
+      direction_events++;
+    }
 
-  SECTION("TestComponentRemovedEvent") {
-    struct ComponentRemovedReceiver : public Receiver<ComponentRemovedReceiver> {
-      void receive(const ComponentRemovedEvent<Direction> &event) {
-        removed = event.component;
-      }
+    int position_events = 0;
+    int direction_events = 0;
+  };
 
-      Direction *removed = nullptr;
-    };
+  ComponentAddedEventReceiver receiver;
+  ev.subscribe<ComponentAddedEvent<Position>>(receiver);
+  ev.subscribe<ComponentAddedEvent<Direction>>(receiver);
 
-    ComponentRemovedReceiver receiver;
-    ev.subscribe<ComponentRemovedEvent<Direction>>(receiver);
+  REQUIRE(ComponentAddedEvent<Position>::family() !=
+            ComponentAddedEvent<Direction>::family());
 
-    REQUIRE(!(receiver.removed));
+  REQUIRE(0 ==  receiver.position_events);
+  REQUIRE(0 ==  receiver.direction_events);
+  for (int i = 0; i < 10; ++i) {
     Entity e = em.create();
-    Direction *p = e.assign<Direction>(1.0, 2.0);
-    e.remove<Direction>();
-    REQUIRE(receiver.removed ==  p);
-    REQUIRE(!(e.component<Direction>()));
+    e.assign<Position>(static_cast<float>(i), static_cast<float>(i));
+    e.assign<Direction>(static_cast<float>(-i), static_cast<float>(-i));
   }
+  REQUIRE(10 ==  receiver.position_events);
+  REQUIRE(10 ==  receiver.direction_events);
+}
 
-  SECTION("TestEntityAssignment") {
-    Entity a, b;
-    a = em.create();
-    REQUIRE(a !=  b);
-    b = a;
-    REQUIRE(a ==  b);
-    a.invalidate();
-    REQUIRE(a !=  b);
-  }
 
-  SECTION("TestEntityDestroyAll") {
-    Entity a = em.create(), b = em.create();
-    em.reset();
-    REQUIRE(!(a.valid()));
-    REQUIRE(!(b.valid()));
-  }
+TEST_CASE_METHOD(EntityManagerFixture, "TestComponentRemovedEvent") {
+  struct ComponentRemovedReceiver : public Receiver<ComponentRemovedReceiver> {
+    void receive(const ComponentRemovedEvent<Direction> &event) {
+      removed = event.component;
+    }
 
-  SECTION("TestEntityDestroyHole") {
-    std::vector<Entity> entities;
+    Direction *removed = nullptr;
+  };
 
-    auto count = [&em]()->int {
-      auto e = em.entities_with_components<Position>();
-      return std::count_if(e.begin(), e.end(),
-                           [](const Entity &) { return true; });
-    };
+  ComponentRemovedReceiver receiver;
+  ev.subscribe<ComponentRemovedEvent<Direction>>(receiver);
 
-    for (int i = 0; i < 5000; i++) {
-      auto e = em.create();
-      e.assign<Position>();
-      entities.push_back(e);
-    }
+  REQUIRE(!(receiver.removed));
+  Entity e = em.create();
+  Direction *p = e.assign<Direction>(1.0, 2.0);
+  e.remove<Direction>();
+  REQUIRE(receiver.removed ==  p);
+  REQUIRE(!(e.component<Direction>()));
+}
+
+TEST_CASE_METHOD(EntityManagerFixture, "TestEntityAssignment") {
+  Entity a, b;
+  a = em.create();
+  REQUIRE(a !=  b);
+  b = a;
+  REQUIRE(a ==  b);
+  a.invalidate();
+  REQUIRE(a !=  b);
+}
+
+TEST_CASE_METHOD(EntityManagerFixture, "TestEntityDestroyAll") {
+  Entity a = em.create(), b = em.create();
+  em.reset();
+  REQUIRE(!(a.valid()));
+  REQUIRE(!(b.valid()));
+}
 
-    REQUIRE(count() ==  5000);
+TEST_CASE_METHOD(EntityManagerFixture, "TestEntityDestroyHole") {
+  std::vector<Entity> entities;
 
-    entities[2500].destroy();
+  auto count = [this]()->int {
+    auto e = em.entities_with_components<Position>();
+    return std::count_if(e.begin(), e.end(),
+                         [](const Entity &) { return true; });
+  };
 
-    REQUIRE(count() ==  4999);
+  for (int i = 0; i < 5000; i++) {
+    auto e = em.create();
+    e.assign<Position>();
+    entities.push_back(e);
   }
+
+  REQUIRE(count() ==  5000);
+
+  entities[2500].destroy();
+
+  REQUIRE(count() ==  4999);
+}
+
+TEST_CASE_METHOD(EntityManagerFixture, "DeleteComponentThrowsBadAlloc") {
+  Position *position = new Position();
+  REQUIRE_THROWS_AS(delete position, std::bad_alloc);
 }
diff --git a/entityx/System_test.cc b/entityx/System_test.cc
index 0f2b663..9253003 100644
--- a/entityx/System_test.cc
+++ b/entityx/System_test.cc
@@ -51,11 +51,11 @@ class MovementSystem : public System<MovementSystem> {
   string label;
 };
 
-class TestContainer : public EntityX {
+class EntitiesFixture : public EntityX {
  public:
   std::vector<Entity> created_entities;
 
-  void initialize() {
+  EntitiesFixture() {
     for (int i = 0; i < 150; ++i) {
       Entity e = entities.create();
       created_entities.push_back(e);
@@ -65,33 +65,28 @@ class TestContainer : public EntityX {
   }
 };
 
-TEST_CASE("SystemManagerTest", "[systemmanager]") {
-  TestContainer manager;
-  manager.initialize();
+TEST_CASE_METHOD(EntitiesFixture, "TestConstructSystemWithArgs") {
+  systems.add<MovementSystem>("movement");
+  systems.configure();
 
-  SECTION("TestConstructSystemWithArgs") {
-    manager.systems.add<MovementSystem>("movement");
-    manager.systems.configure();
-
-    REQUIRE("movement" == manager.systems.system<MovementSystem>()->label);
-  }
-
-  SECTION("TestApplySystem") {
-    manager.systems.add<MovementSystem>();
-    manager.systems.configure();
+  REQUIRE("movement" == systems.system<MovementSystem>()->label);
+}
 
-    manager.systems.update<MovementSystem>(0.0);
-    Position *position;
-    Direction *direction;
-    for (auto entity : manager.created_entities) {
-      entity.unpack<Position, Direction>(position, direction);
-      if (position && direction) {
-        REQUIRE(2.0 == Approx(position->x));
-        REQUIRE(3.0 == Approx(position->y));
-      } else if (position) {
-        REQUIRE(1.0 == Approx(position->x));
-        REQUIRE(2.0 == Approx(position->y));
-      }
+TEST_CASE_METHOD(EntitiesFixture, "TestApplySystem") {
+  systems.add<MovementSystem>();
+  systems.configure();
+
+  systems.update<MovementSystem>(0.0);
+  Position *position;
+  Direction *direction;
+  for (auto entity : created_entities) {
+    entity.unpack<Position, Direction>(position, direction);
+    if (position && direction) {
+      REQUIRE(2.0 == Approx(position->x));
+      REQUIRE(3.0 == Approx(position->y));
+    } else if (position) {
+      REQUIRE(1.0 == Approx(position->x));
+      REQUIRE(2.0 == Approx(position->y));
     }
   }
 }
diff --git a/entityx/deps/Dependencies_test.cc b/entityx/deps/Dependencies_test.cc
index e18623d..fe9844c 100644
--- a/entityx/deps/Dependencies_test.cc
+++ b/entityx/deps/Dependencies_test.cc
@@ -26,44 +26,39 @@ struct B : public entityx::Component<B> {
 };
 struct C : public entityx::Component<C> {};
 
+TEST_CASE_METHOD(entityx::EntityX, "TestSingleDependency") {
+  systems.add<deps::Dependency<A, B>>();
+  systems.configure();
 
-TEST_CASE("DepsTest", "[deps]") {
-  entityx::EntityX ex;
-
-  SECTION("TestSingleDependency") {
-    ex.systems.add<deps::Dependency<A, B>>();
-    ex.systems.configure();
-
-    entityx::Entity e = ex.entities.create();
-    REQUIRE(!static_cast<bool>(e.component<A>()));
-    REQUIRE(!static_cast<bool>(e.component<B>()));
-    e.assign<A>();
-    REQUIRE(static_cast<bool>(e.component<A>()));
-    REQUIRE(static_cast<bool>(e.component<B>()));
-  }
+  entityx::Entity e = entities.create();
+  REQUIRE(!static_cast<bool>(e.component<A>()));
+  REQUIRE(!static_cast<bool>(e.component<B>()));
+  e.assign<A>();
+  REQUIRE(static_cast<bool>(e.component<A>()));
+  REQUIRE(static_cast<bool>(e.component<B>()));
+}
 
-  SECTION("TestMultipleDependencies") {
-    ex.systems.add<deps::Dependency<A, B, C>>();
-    ex.systems.configure();
+TEST_CASE_METHOD(entityx::EntityX, "TestMultipleDependencies") {
+  systems.add<deps::Dependency<A, B, C>>();
+  systems.configure();
 
-    entityx::Entity e = ex.entities.create();
-    REQUIRE(!static_cast<bool>(e.component<A>()));
-    REQUIRE(!static_cast<bool>(e.component<B>()));
-    REQUIRE(!static_cast<bool>(e.component<C>()));
-    e.assign<A>();
-    REQUIRE(static_cast<bool>(e.component<A>()));
-    REQUIRE(static_cast<bool>(e.component<B>()));
-    REQUIRE(static_cast<bool>(e.component<C>()));
-  }
+  entityx::Entity e = entities.create();
+  REQUIRE(!static_cast<bool>(e.component<A>()));
+  REQUIRE(!static_cast<bool>(e.component<B>()));
+  REQUIRE(!static_cast<bool>(e.component<C>()));
+  e.assign<A>();
+  REQUIRE(static_cast<bool>(e.component<A>()));
+  REQUIRE(static_cast<bool>(e.component<B>()));
+  REQUIRE(static_cast<bool>(e.component<C>()));
+}
 
-  SECTION("TestDependencyDoesNotRecreateComponent") {
-    ex.systems.add<deps::Dependency<A, B>>();
-    ex.systems.configure();
+TEST_CASE_METHOD(entityx::EntityX, "TestDependencyDoesNotRecreateComponent") {
+  systems.add<deps::Dependency<A, B>>();
+  systems.configure();
 
-    entityx::Entity e = ex.entities.create();
-    e.assign<B>(true);
-    REQUIRE(e.component<B>()->b);
-    e.assign<A>();
-    REQUIRE(e.component<B>()->b);
-  }
+  entityx::Entity e = entities.create();
+  e.assign<B>(true);
+  REQUIRE(e.component<B>()->b);
+  e.assign<A>();
+  REQUIRE(e.component<B>()->b);
 }
diff --git a/entityx/help/Pool_test.cc b/entityx/help/Pool_test.cc
index 611b8c0..f04bc29 100644
--- a/entityx/help/Pool_test.cc
+++ b/entityx/help/Pool_test.cc
@@ -27,7 +27,7 @@ struct Position {
 };
 
 
-TEST_CASE("TestPoolReserve", "[pool]") {
+TEST_CASE("TestPoolReserve") {
   entityx::Pool<Position, 8> pool;
   REQUIRE(0 ==  pool.capacity());
   REQUIRE(0 ==  pool.chunks());
@@ -41,7 +41,7 @@ TEST_CASE("TestPoolReserve", "[pool]") {
   REQUIRE(2 ==  pool.chunks());
 }
 
-TEST_CASE("TestPoolPointers", "[pool]") {
+TEST_CASE("TestPoolPointers") {
   entityx::Pool<Position, 8> pool;
   std::vector<char*> ptrs;
   for (int i = 0; i < 4; i++) {
@@ -66,7 +66,7 @@ TEST_CASE("TestPoolPointers", "[pool]") {
   REQUIRE(extrapolated_p24 !=  p24);
 }
 
-TEST_CASE("TestDeconstruct", "[pool]") {
+TEST_CASE("TestDeconstruct") {
   entityx::Pool<Position, 8> pool;
   pool.expand(8);
 
-- 
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