public void Remove_OneOccurrence()
{
// Arrange
ReverseCollection <int> reversedCollection = new ReverseCollection <int>(initialArray);
int itemToRemove = 2;
bool expectedRemoveResult = true;
bool expectedContainItemBeforeRemoving = true;
bool exoectedContainItemAfterRemoving = false;
int[] expectedCollection = new int[4] {
5, 4, 3, 1
};
// Act
bool actualContainItemBeforeRemoving = reversedCollection.Contains(itemToRemove);
bool actualRemoveResult = reversedCollection.Remove(itemToRemove);
bool actualContainItemAfterRemoving = reversedCollection.Contains(itemToRemove);
int[] actualCollection = reversedCollection.ToArray();
// Assert
Assert.AreEqual(expectedRemoveResult, actualRemoveResult);
Assert.AreEqual(expectedContainItemBeforeRemoving, actualContainItemBeforeRemoving);
Assert.AreEqual(exoectedContainItemAfterRemoving, actualContainItemAfterRemoving);
CollectionAssert.AreEqual(expectedCollection, actualCollection);
CollectionAssert.DoesNotContain(actualCollection, itemToRemove);
}
public void Remove_ManyOccurrence()
{
// Arrange
int[] startCollection = new int[] { 1, 2, 3, 3, 2, 1 };
ReverseCollection <int> reversedCollection = new ReverseCollection <int>(startCollection);
int itemToRemove = 2;
bool expectedRemoveResult = true;
bool expectedContainItemBeforeRemoving = true;
bool exoectedContainItemAfterRemoving = true;
int[] expectedCollection = new int[] { 1, 3, 3, 2, 1 };
// Act
bool actualContainItemBeforeRemoving = reversedCollection.Contains(itemToRemove);
bool actualRemoveResult = reversedCollection.Remove(itemToRemove);
bool actualContainItemAfterRemoving = reversedCollection.Contains(itemToRemove);
// Assert
Assert.AreEqual(expectedRemoveResult, actualRemoveResult);
Assert.AreEqual(expectedContainItemBeforeRemoving, actualContainItemBeforeRemoving);
Assert.AreEqual(exoectedContainItemAfterRemoving, actualContainItemAfterRemoving);
CollectionAssert.Contains(reversedCollection.ToArray(), itemToRemove);
}
public void RemoveAt()
{
// Arrange
ReverseCollection <int> reversedCollection = new ReverseCollection <int>(initialArray);
int indexToRemove = 2;
int itemToRemove = 3;
int[] expectedCollection = new int[4] {
5, 4, 2, 1
};
bool expectedHasItemBeforeRemoving = true;
bool actualHasItemBeforeRemoving = reversedArray.Contains(itemToRemove);
bool expectedHasItemAfterRemoving = false;
// Act
reversedCollection.RemoveAt(indexToRemove);
bool actualHasItemAfterRemoving = reversedCollection.Contains(itemToRemove);
int[] actualCollectionAfterRemoving = reversedCollection.ToArray();
// Assert
CollectionAssert.DoesNotContain(actualCollectionAfterRemoving, itemToRemove);
Assert.AreEqual(expectedHasItemBeforeRemoving, actualHasItemBeforeRemoving);
Assert.AreEqual(expectedHasItemAfterRemoving, actualHasItemAfterRemoving);
CollectionAssert.AreEqual(expectedCollection, actualCollectionAfterRemoving);
}
public void Remove_WrongItem_False()
{
// Arrange
ReverseCollection <int> reversedCollection = new ReverseCollection <int>(initialArray);
int itemToRemove = int.MaxValue;
bool expectedRemoveResult = false;
bool expectedContainItemBeforeRemoving = false;
bool exoectedContainItemAfterRemoving = false;
// Act
bool actualContainItemBeforeRemoving = reversedCollection.Contains(itemToRemove);
bool actualRemoveResult = reversedCollection.Remove(itemToRemove);
bool actualContainItemAfterRemoving = reversedCollection.Contains(itemToRemove);
// Assert
Assert.AreEqual(expectedRemoveResult, actualRemoveResult);
Assert.AreEqual(expectedContainItemBeforeRemoving, actualContainItemBeforeRemoving);
Assert.AreEqual(exoectedContainItemAfterRemoving, actualContainItemAfterRemoving);
CollectionAssert.DoesNotContain(reversedCollection.ToArray(), itemToRemove);
}
public void Contains()
{
// Arrange
ReverseCollection <int> reversedCollection = new ReverseCollection <int>();
int elementToSearch = 2;
bool expectedContainsElementBeforeAdding = false;
bool expectedContainsElementAfterAdding = true;
// Act
bool actualContainsElementBeforeAdding = reversedCollection.Contains(elementToSearch);
foreach (int item in initialArray)
{
reversedCollection.Add(item);
}
bool actualContainsElementAfterAdding = reversedCollection.Contains(elementToSearch);
// Assert
Assert.AreEqual(expectedContainsElementBeforeAdding, actualContainsElementBeforeAdding);
Assert.AreEqual(expectedContainsElementAfterAdding, actualContainsElementAfterAdding);
CollectionAssert.Contains(reversedCollection.ToArray(), elementToSearch);
}
