Add Objective-C test

Author: NeRdTheNed

test/CMakeLists.txt

@@ -3,3 +3,7 @@ include(CTest)
 add_executable(versionCheck versionCheck.c)
 target_link_libraries(versionCheck PRIVATE macrOS)
 add_test(NAME versionCheck COMMAND versionCheck)
+
+add_executable(objcTest objcTest.c)
+target_link_libraries(objcTest PRIVATE macrOS)
+add_test(NAME objcTest COMMAND objcTest)

test/objcTest.c

@@ -0,0 +1,26 @@
+#include <macrOS/macrOSObjC.h>
+#include <stdlib.h>
+
+#define CORRECT_VAL 1234
+
+int returnVal(id self, SEL sel) {
+    return CORRECT_VAL;
+}
+
+int main(int argc, char** argv) {
+    initObjCRuntime();
+    /* Create an Objective-C class */
+    Class TestClass = makeClass("TestClass", "NSObject");
+    /* Add a method to the class */
+    addMethod(TestClass, "returnVal:", returnVal, "i@:");
+    /* Register the class */
+    finaliseClass(TestClass);
+    /* Create an instance of the class */
+    id testClassInstance = objc_alloc_init(TestClass);
+    /* Call a method */
+    int returnedValue = objc_msgSend_t(int)(testClassInstance, sel("returnVal:"));
+    /* Release the instance */
+    objc_msgSend_id(testClassInstance, sel("release"));
+    /* Check the return value */
+    return (returnedValue == CORRECT_VAL) ? EXIT_SUCCESS : EXIT_FAILURE;
+}