public void FilterDigit_digit7array1_expected1returned()
{
// Act.
int[] actual = MathAlgorithm.FilterDigit(i => i.ToString().Contains("7"), Array1);
// Assert.
Assert.IsTrue(actual.SequenceEqual(Expected1));
}
public void FilterDigit_digit7emptyarray_exceptionreturned()
{
// Arrange.
int expected = 0;
// Act.
int[] actual = MathAlgorithm.FilterDigit(i => i.ToString().Contains("7"));
// Assert.
Assert.AreEqual(expected, actual.Length);
}
public void FilterDigit_digit7from13or31_emptyarrayreturned()
{
// Arrange.
int number1 = 13, number2 = 31;
int expectedArrayLength = 0;
// Act.
int[] actual = MathAlgorithm.FilterDigit(i => i.ToString().Contains("7"), number1, number2);
// Assert.
Assert.AreEqual(expectedArrayLength, actual.Length);
}
public void FilterDigit_digit7from13or72_72returned()
{
// Arrange.
int number1 = 13, number2 = 72;
int expected = 72;
// Act.
int[] actual = MathAlgorithm.FilterDigit(i => i.ToString().Contains("7"), number1, number2);
// Assert.
Assert.AreEqual(expected, actual[0]);
}
public void FilterDigit_digit7array_exceptionreturned()
{
// Act.
MathAlgorithm.FilterDigit(null, 123);
}
public void FilterDigit_digit7nullarray_exceptionreturned()
{
// Act.
MathAlgorithm.FilterDigit(i => i.ToString().Contains("7"), null);
}
public void FilterDigitTests_ArgumentException(params int[] numbers)
{
Assert.Throws <ArgumentNullException>(() =>
MathAlgorithm.FilterDigit(null, numbers));
}
public int[] FilterDigitTests(params int[] numbers)
{
return(MathAlgorithm.FilterDigit(i => i.ToString().Contains("7"), numbers));
}
