public void DivideThrowsExceptionWhenDividingByZeroTest()
{
// Arrange
var functions = new PureFunctions();
// Act and Assert
Assert.ThrowsException <ArgumentException>(() => functions.Divide(7, 0));
// We sow it with the ExpectedException attribute but can also be checked like this,
// passing a System.Action to the Assert.ThrowsExceptioon<T>
}
public void IsEvenReturnsTrueTest()
{
// Arrange
var functions = new PureFunctions();
// Act
bool result = functions.IsEven(2);
// Assert
Assert.IsTrue(result);
}
public void IsInCollectionRetursFalseTest()
{
// Arrange
int[] numbers = new int[] { 1, 2, 3, 4, 5 };
var functions = new PureFunctions();
// Act
bool result = functions.IsInCollection(numbers, 6);
// Assert
Assert.IsFalse(result);
}
public void DivideReturnsRightResultTest()
{
// Arrange
double expected = 3.5;
var functions = new PureFunctions();
// Act
double actual = functions.Divide(7, 2);
// Assert
Assert.AreEqual(expected, actual);
}
public void TransformCollectionNumbersTest()
{
// Arrange
int[] numbers = new int[] { 1, 2, 3, 4, 5 };
int[] expected = new int[] { 2, 1, 6, 2, 10 };
var functions = new PureFunctions();
// Act
int[] actual = functions.TransformCollectionNumbers(numbers);
// Assert
CollectionAssert.AreEqual(expected, actual);
}
public void ReturnSameResults_WhenSameInputs()
{
// Arrange
var examples = new PureFunctions();
long value = 5;
long exponent = 3;
// Act
var result1 = examples.CalcExponent(value, exponent);
var result2 = examples.CalcExponent(value, exponent);
// Assert
Assert.AreEqual((value ^ exponent), result1);
Assert.AreEqual(result1, result2);
}
