Test result:
Expected :kotlin.Pair<(null, com.test.mappytest.fizzbuzz.InvalidInputException: input One or input Two are greater then limit)>
Actual   :kotlin.Pair<(null, com.test.mappytest.fizzbuzz.InvalidInputException: input One or input Two are greater then limit)>

@Test
    fun `processing result fail`() {
        // Arrange
        val processedResult = MutableLiveData<Pair<String?, Throwable?>>()
        processedResult.value = Pair(null, InvalidInputException("input One or input Two are greater then limit"))

        val observer = Observer<Pair<String?, Throwable?>> {}
        cut.processorOutputLiveData.observeForever(observer)

        try {
            // Act
            cut.process(2, 3, 1, "Fi", "Bu")

            // Assert
            Assert.assertEquals(processedResult.value, cut.processorOutputLiveData.value)
        } finally {
            cut.processorOutputLiveData.removeObserver(observer)
        }
    }