Added final test for input handler

test/test_inputHandler.c

@@ -30,3 +30,10 @@ void test_inputHandler_returnzeroforinvalidinput(void) {
     result = isOperationIdValid(0);
     TEST_ASSERT_EQUAL_INT(expectedResult, result);
 }
+
+void test_inputHandler_returnoneifinputtoobig(void) {
+    int expectedResult = 1;
+    int result;
+    result = isNumberTooBig(300);
+    TEST_ASSERT_EQUAL_INT(expectedResult, result);
+}