public void GetIntegersCountWithStartIndexAndCount_ArrayToSearchIsNull_ThrowArgumentNullException()
{
// Act
Assert.Throws <ArgumentNullException>(
() => IntegersCounter.GetIntegersCount(null, Array.Empty <int>(), 0, 1),
message: "Method throws ArgumentNullException in case an array to search is null.");
}
public void GetIntegersCountWithStartIndexAndCount_StartIndexIsNegative_ThrowArgumentOutOfRangeException()
{
// Act
Assert.Throws <ArgumentOutOfRangeException>(
() => IntegersCounter.GetIntegersCount(Array.Empty <int>(), Array.Empty <int>(), -1, 1),
message: "Method throws ArgumentOutOfRangeException in case start index is negative.");
}
public void GetIntegersCountWithStartIndexAndCount_ElementsToSearchForIsNull_ThrowArgumentNullException()
{
// Act
Assert.Throws <ArgumentNullException>(
() => IntegersCounter.GetIntegersCount(Array.Empty <int>(), null, 0, 1),
message: "Method throws ArgumentNullException in case an array of elements to for search is null.");
}
public void GetIntegersCountWithStartIndexAndCount_TheNumberOfElementsToSearchIsGreaterThanTheNumberOfElementsAvailableInTheArrayStartingFromTheStartIndexPosition_ThrowArgumentOutOfRangeException()
{
// Act
Assert.Throws <ArgumentOutOfRangeException>(
() => IntegersCounter.GetIntegersCount(Array.Empty <int>(), Array.Empty <int>(), 6, 44),
message: "Method throws ArgumentOutOfRangeException in case the number of elements to search is greater than the number of elements available in the array starting from the startIndex position.");
}
public void GetIntegersCountWithStartIndexAndCount_CountIsLessThanZero_ReturnValidResult()
{
// Act
Assert.Throws <ArgumentOutOfRangeException>(
() => IntegersCounter.GetIntegersCount(Array.Empty <int>(), Array.Empty <int>(), 2, -1),
message: "Method throws ArgumentOutOfRangeException in case count is less than zero.");
}
public void GetIntegersCountWithStartIndexAndCount_StartIndexIsGreaterThanTheLengthOfAnArrayToSearch_ThrowArgumentOutOfRangeException()
{
// Act
Assert.Throws <ArgumentOutOfRangeException>(
() => IntegersCounter.GetIntegersCount(Array.Empty <int>(), Array.Empty <int>(), 12, 1),
message: "Method throws ArgumentOutOfRangeException in case start index is greater than the length of an array to search.");
}
public void GetIntegersCountWithStartIndexAndCount_ElementsToSearchForIsEmpty_ReturnZeroOccurrences()
{
// Arrange
int[] arrayToSearch = { 2, 5, 8 };
// Act
int actual = IntegersCounter.GetIntegersCount(arrayToSearch, Array.Empty <int>(), 0, 1);
// Assert
Assert.AreEqual(0, actual);
}
public void GetIntegersCount_ArrayToSearchIsEmpty_ReturnZeroOccurrences()
{
// Arrange
int[] elementsToSearchFor = { 2, 5, 8 };
// Act
int actual = IntegersCounter.GetIntegersCount(Array.Empty <int>(), elementsToSearchFor);
// Assert
Assert.AreEqual(0, actual);
}
public int GetIntegersCount_ParametersAreValid_ReturnsResult(int[] arrayToSearch, int[] elementsToSearchFor)
{
// Act
return(IntegersCounter.GetIntegersCount(arrayToSearch, elementsToSearchFor));
}
