public async Task CalculateAsync_MixedValuesArray_ReturnsResultAsync(int expected, int[] values)
        {
            var calculatorService = new EvenCalculatorService();
            var result            = await calculatorService.CalculateAsync(values);

            Assert.AreEqual(expected, result);
        }
 public async Task CalculateAsync_InvalidValuesArray_ThrowsArgumentExceptionAsync(int[] values)
 {
     var calculatorService = new EvenCalculatorService();
     await Assert.ThrowsExceptionAsync <ArgumentException>(async() => await calculatorService.CalculateAsync(values));
 }