Fixes for AssertNotNull

tests/AssertTests.cpp

@@ -1,6 +1,7 @@
 #include "../extern/catch.hpp"
 #include "../src/Assert.hpp"
 void TestWrapper(bool wrapperExpression){Assert(wrapperExpression)}
+void TestWrapperNotNull(void* value){AssertNotNull(value)}
 
 TEST_CASE("Assert succeeds if true", "[Utilities]") {
     REQUIRE_NOTHROW(TestWrapper(true));
@@ -12,3 +13,5 @@ TEST_CASE("Assert throws if false with message", "[Utilities]") {
     REQUIRE_THROWS_WITH(TestWrapper(false),
                         Catch::Matchers::Equals("ASSERTION FAILED: [AssertTests.cpp (3)] \"wrapperExpression\""));
 }
+
+TEST_CASE("AssertNotNull throws if nullptr", "[Utilities]") { REQUIRE_THROWS(TestWrapperNotNull(nullptr)); }