Add Value tests

Author: adazem009

test/scratch_classes/CMakeLists.txt

@@ -67,3 +67,17 @@ target_link_libraries(
 )
 
 gtest_discover_tests(target_test)
+
+# value_test
+add_executable(
+  value_test
+  value_test.cpp
+)
+
+target_link_libraries(
+  value_test
+  GTest::gtest_main
+  scratchcpp
+)
+
+gtest_discover_tests(value_test)