public void VerifyNullCommandThrows()
{
// Fixture setup
var sut = new NullReferenceBehaviorExpectation();
// Exercise system and verify outcome
Assert.Throws<ArgumentNullException>(() =>
sut.Verify(null));
// Teardown
}
public void SutIsBehaviorExpectation()
{
// Fixture setup
// Exercise system
var sut = new NullReferenceBehaviorExpectation();
// Verify outcome
Assert.IsAssignableFrom<IBehaviorExpectation>(sut);
// Teardown
}
public void VerifySuccedsWhenCommandThrowsCorrectException()
{
// Fixture setup
var cmd = new DelegatingGuardClauseCommand { OnExecute = v => { throw new ArgumentNullException(); } };
var sut = new NullReferenceBehaviorExpectation();
// Exercise system and verify outcome
Assert.DoesNotThrow(() =>
sut.Verify(cmd));
// Teardown
}
public void VerifyDoesNothingWhenContextTypeIsNotInterfaceOrReference(Type type)
{
// Fixture setup
var verifyInvoked = false;
var mockCommand = new DelegatingGuardClauseCommand { OnExecute = v => verifyInvoked = true };
mockCommand.RequestedType = type;
var sut = new NullReferenceBehaviorExpectation();
// Exercise system
sut.Verify(mockCommand);
// Verify outcome
Assert.False(verifyInvoked, "Mock verified.");
// Teardown
}
public void VerifyCorrectlyInvokesExecuteForNullableContexts(Type type)
{
// Fixture setup
var mockVerified = false;
var mockCommand = new DelegatingGuardClauseCommand
{
OnExecute = v => mockVerified = v == null,
OnCreateException = v => new InvalidOperationException()
};
mockCommand.RequestedType = type;
var sut = new NullReferenceBehaviorExpectation();
// Exercise system
try
{
sut.Verify(mockCommand);
}
catch (InvalidOperationException) { }
// Verify outcome
Assert.True(mockVerified, "Mock verified.");
// Teardown
}
public void VerifyThrowsWhenCommandThrowsUnexpectedException()
{
// Fixture setup
var expectedInner = new Exception();
var expected = new Exception();
var cmd = new DelegatingGuardClauseCommand
{
OnExecute = v => { throw expectedInner; },
OnCreateExceptionWithInner = (v, e) => v == "null" && expectedInner.Equals(e) ? expected : new Exception()
};
var sut = new NullReferenceBehaviorExpectation();
// Exercise system and verify outcome
var result = Assert.Throws<Exception>(() =>
sut.Verify(cmd));
Assert.Equal(expected, result);
// Teardown
}
public void VerifyThrowsWhenCommandDoesNotThrow()
{
// Fixture setup
var expected = new Exception();
var cmd = new DelegatingGuardClauseCommand
{
OnCreateException = v => v == "null" ? expected : new Exception()
};
var sut = new NullReferenceBehaviorExpectation();
// Exercise system and verify outcome
var result = Assert.Throws<Exception>(() =>
sut.Verify(cmd));
Assert.Equal(expected, result);
// Teardown
}