public void ExecuteCodeWithGuaranteedCleanup_GivenActionAndCleanUp_InvokedInOrder()
{
// Arrange
var isActionCalled = false;
var isCleanupCalled = false;
void CleanUp()
{
if (!isActionCalled)
{
throw new ArgumentException("cleanup called first");
}
isCleanupCalled = true;
}
void Action()
{
if (isCleanupCalled)
{
throw new ArgumentException("cleanup called first");
}
isActionCalled = true;
}
// Act
RuntimeHelper.ExecuteCodeWithGuaranteedCleanup(
Action,
CleanUp);
// Assert
Assert.True(isActionCalled);
Assert.True(isCleanupCalled);
}
public void ExecuteCodeWithGuaranteedCleanup_CleanUpIsNull_Throws()
{
Assert.Throws <ArgumentNullException>(() =>
{
RuntimeHelper.ExecuteCodeWithGuaranteedCleanup(
() => { },
null);
});
}
public void ExecuteCodeWithGuaranteedCleanup_CleanupThrows_ExceptionIsThrown()
{
// Arrange
var expected = new ArgumentException("expected exception");
// Act
var actual = Assert.Throws <ArgumentException>(() =>
{
RuntimeHelper.ExecuteCodeWithGuaranteedCleanup(
() => { },
() => throw expected);
});
// Assert
Assert.AreEqual(expected.Message, actual.Message);
}
public void ExecuteCodeWithGuaranteedCleanup_ActionThrows_InvokesCleanup()
{
// Arrange
var isCleanupCalled = false;
void CleanUp() => isCleanupCalled = true;
void Action() => throw new ArgumentException("expected exception");
// Act
var swallowed = Assert.Throws <ArgumentException>(() =>
{
RuntimeHelper.ExecuteCodeWithGuaranteedCleanup(
Action,
CleanUp);
});
// Assert
Assert.True(isCleanupCalled);
}
