public void Dispose_NotCalled_DisposeMethodsAreNotInvoked()
{
// Arrange
var cut = new DisposableUnderTest();
// Assert
Assert.False(cut.IsDisposeManagedCalled);
Assert.False(cut.IsDisposeUnmanagedCalled);
}
public void IsDisposed_NotDisposed_ReturnsFalse()
{
// Arrange
using var sut = new DisposableUnderTest();
// Act
var actual = sut.IsDisposed;
// Assert
Assert.False(actual);
}
public void IsDisposed_Disposed_ReturnsTrue()
{
// Arrange
var sut = new DisposableUnderTest();
// Act
sut.Dispose();
// Assert
Assert.True(sut.IsDisposed);
}
public void ThrowIfDisposed_NotDisposed_DoesNotThrow()
{
// Arrange
using var sut = new DisposableUnderTest();
// Act
void ThrowIfDisposed() => sut.ThrowIfDisposed();
// Assert
Assert.DoesNotThrow(ThrowIfDisposed);
}
public void ThrowIfDisposed_Disposed_Throws()
{
// Arrange
var sut = new DisposableUnderTest();
// Act
sut.Dispose();
void ThrowIfDisposed() => sut.ThrowIfDisposed();
// Assert
Assert.Throws <ObjectDisposedException>(ThrowIfDisposed);
}
public void Dispose_Called_InvokesDisposeMethods()
{
// Arrange
var cut = new DisposableUnderTest();
// Act
cut.Dispose();
// Assert
Assert.True(cut.IsDisposeManagedCalled);
Assert.True(cut.IsDisposeUnmanagedCalled);
}
public void Dispose_CalledMultipleTimes_DisposesResourcesOnce()
{
// Arrange
var sut = new DisposableUnderTest();
// Act
sut.Dispose();
sut.Dispose();
// Assert
Assert.AreEqual(1, sut.DisposeCalledCount);
}
public void Dispose_CalledMultipleTimes_DoesNotThrow()
{
// Arrange
var sut = new DisposableUnderTest();
// Act
void DisposeManyTimes()
{
for (var i = 0; i < 15; i++)
{
sut.Dispose();
}
}
// Assert
Assert.DoesNotThrow(DisposeManyTimes);
}