Add component size test for future

Author: SgtCoDFish

test/core/ComponentTypeTest.cpp

@@ -22,12 +22,16 @@
 
 #include "gtest/gtest.h"
 
+// Ensures that we don't waste any memory by having a vtable on Components; that is, tests that a Component has a size of 1 (the minimum)
+TEST(ComponentTypeTest, MinSizeComponents) {
+	ASSERT_EQ(sizeof(ashley::Component), 1);
+}
+
 // Ensures a valid type is returned when a call is made to the various getFor() functions, and that this type is the same in the various functions.
 // Note that this covers both the validComponentType and sameComponentType tests in the Java version
 TEST(ComponentTypeTest, ValidComponentTypes) {
 	auto type1 = ashley::ComponentType::getFor(typeid(ashley::test::PositionComponent)); // std::type_info
-	auto type2 = ashley::ComponentType::getFor(
-			std::type_index(typeid(ashley::test::PositionComponent))); // std::type_index
+	auto type2 = ashley::ComponentType::getFor(std::type_index(typeid(ashley::test::PositionComponent))); // std::type_index
 	auto type3 = ashley::ComponentType::getFor<ashley::test::PositionComponent>(); // pass by template type
 
 	ASSERT_EQ(type1, type2);
@@ -37,8 +41,7 @@ TEST(ComponentTypeTest, ValidComponentTypes) {
 // Ensures a valid and consistent index is returned when a call is made to the various getIndexFor() functions
 TEST(ComponentTypeTest, ValidComponentIndexTypes) {
 	auto id1 = ashley::ComponentType::getIndexFor(typeid(ashley::test::PositionComponent));
-	auto id2 = ashley::ComponentType::getIndexFor(
-			std::type_index(typeid(ashley::test::PositionComponent)));
+	auto id2 = ashley::ComponentType::getIndexFor(std::type_index(typeid(ashley::test::PositionComponent)));
 	auto id3 = ashley::ComponentType::getIndexFor<ashley::test::PositionComponent>();
 
 	ASSERT_EQ(id1, id2);
@@ -55,14 +58,12 @@ TEST(ComponentTypeTest, DifferentComponentType) {
 }
 
 TEST(ComponentTypeTest, GetBitsFor) {
-	auto type1 = ashley::ComponentType::getBitsFor<ashley::test::PositionComponent,
-			ashley::test::VelocityComponent>();
+	auto type1 = ashley::ComponentType::getBitsFor<ashley::test::PositionComponent, ashley::test::VelocityComponent>();
 	auto type2 = ashley::ComponentType::getBitsFor( { typeid(ashley::test::PositionComponent),
-			typeid(ashley::test::VelocityComponent) });
+	        typeid(ashley::test::VelocityComponent) });
 
 	auto type3 = ashley::ComponentType::getBitsFor( { typeid(ashley::test::PositionComponent) });
-	auto type4 = ashley::ComponentType::getBitsFor(
-			{ std::type_index(typeid(ashley::test::PositionComponent)) });
+	auto type4 = ashley::ComponentType::getBitsFor( { std::type_index(typeid(ashley::test::PositionComponent)) });
 
 	ASSERT_EQ(type1, type2);
 	ASSERT_EQ(type3, type4);