public void LifeCycle()
{
// Arrange
var progressHandler = new StatusBarDownloadProgressHandler(dummyStatusBar, dummyInstaller, logger);
// 1. Initial request
dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(0, 1000));
dummyStatusBar.CheckLastCallWasSetupCall(0, 1000);
// 2. Progress updates
dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(100, 1000));
dummyStatusBar.CheckLastCallWasInProgressCall(100, 1000);
// 3. Cleanup - reset the statusbar
dummyInstaller.SimulateInstallFinished(new System.ComponentModel.AsyncCompletedEventArgs(null, false, null));
dummyStatusBar.CheckLastCallWasCleanup();
dummyStatusBar.ProgressCallCount.Should().Be(3);
dummyInstaller.AssertNoEventHandlersRegistered();
// 4. Dispose
progressHandler.Dispose();
dummyStatusBar.ProgressCallCount.Should().Be(3); // progress should not be called since already cleaned up
dummyInstaller.AssertNoEventHandlersRegistered();
}
public void LifeCycle_ProgressChanged_CriticalException_NotSuppressed()
{
// Arrange
dummyStatusBar.ProgressOperation = () => throw new StackOverflowException("xxx");
var progressHandler = new StatusBarDownloadProgressHandler(dummyStatusBar, dummyInstaller, logger);
// Act and Assert: exception should be suppressed
Action act = () => dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(0, 1000));
act.Should().Throw <StackOverflowException>().And.Message.Should().Be("xxx");
logger.AssertPartialOutputStringDoesNotExist("xxx");
}
public void LifeCycle_InstallationCompleted_CriticalException_NotSuppressed()
{
// Arrange
var progressHandler = new StatusBarDownloadProgressHandler(dummyStatusBar, dummyInstaller, logger);
// Initialize the status bar
dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(0, 100));
// Throw an exception next time the progress operation is called
dummyStatusBar.ProgressOperation = () => throw new StackOverflowException("xxx");
// Act and Assert: exception should be suppressed
Action act = () => dummyInstaller.SimulateInstallFinished(new System.ComponentModel.AsyncCompletedEventArgs(null, true, null));
act.Should().Throw <StackOverflowException>().And.Message.Should().Be("xxx");
logger.AssertPartialOutputStringDoesNotExist("xxx");
}
public void LifeCycle_ProgressChanged_NonCriticalException_Suppressed()
{
// Arrange
bool opExecuted = false;
dummyStatusBar.ProgressOperation = () =>
{
opExecuted = true;
throw new InvalidOperationException("xxx");
};
var progressHandler = new StatusBarDownloadProgressHandler(dummyStatusBar, dummyInstaller, logger);
// Act and Assert: exception should be suppressed
dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(0, 1000));
opExecuted.Should().BeTrue();
logger.AssertPartialOutputStringExists("xxx");
}
public void LifeCycle_Dispose_UnhooksEventHandlers()
{
// Arrange
var progressHandler = new StatusBarDownloadProgressHandler(dummyStatusBar, dummyInstaller, logger);
// 1. Initial request
dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(0, 1000));
dummyStatusBar.CheckLastCallWasSetupCall(0, 1000);
// 2. Progress updates
dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(100, 1000));
dummyStatusBar.CheckLastCallWasInProgressCall(100, 1000);
dummyStatusBar.ProgressCallCount.Should().Be(2);
// 3. Dispose - unhook event handlers, then simulate more events
progressHandler.Dispose();
dummyInstaller.AssertNoEventHandlersRegistered();
dummyStatusBar.CheckLastCallWasCleanup();
dummyStatusBar.ProgressCallCount.Should().Be(3);
}
public void LifeCycle_InstallationCompleted_NonCriticalException_Suppressed()
{
// Arrange
bool opExecuted = false;
var progressHandler = new StatusBarDownloadProgressHandler(dummyStatusBar, dummyInstaller, logger);
// Initialize the status bar
dummyInstaller.SimulateProgressChanged(new InstallationProgressChangedEventArgs(0, 100));
dummyStatusBar.ProgressOperation = () =>
{
opExecuted = true;
throw new InvalidOperationException("xxx");
};
// Sanity check
opExecuted.Should().BeFalse();
// Act and Assert: exception should be suppressed
dummyInstaller.SimulateInstallFinished(new System.ComponentModel.AsyncCompletedEventArgs(null, false, null));
opExecuted.Should().BeTrue();
logger.AssertPartialOutputStringExists("xxx");
}