Implement Exp find test

test/test_inputHandling.c

@@ -71,4 +71,11 @@ void test_inputHandling_findDivFunctionType(void)
     TEST_ASSERT_TRUE(opDiv == type);
 }
 
+void test_inputHandling_findExpFunctionType(void)
+{
+    op type = opNotSupported;
+    type = detectFunctionOperator("4^5", 3);
+    TEST_ASSERT_TRUE(opExp == type);
+}
+
 #endif // TEST