public async Task TrySynchronizeVirtualDocumentAsync_SimultaneousEqualSynchronizationRequests_ReturnsTrue()
{
// Arrange
var synchronizer = new DefaultLSPDocumentSynchronizer(DocumentManager, JoinableTaskContext);
synchronizer._synchronizationTimeout = TimeSpan.FromMilliseconds(500);
var originalVirtualDocument = new TestVirtualDocumentSnapshot(VirtualDocumentUri, 123);
var originalDocument = new TestLSPDocumentSnapshot(LSPDocumentUri, 124, originalVirtualDocument);
// Start synchronize
var synchronizeTask1 = synchronizer.TrySynchronizeVirtualDocumentAsync(originalDocument, originalVirtualDocument, CancellationToken.None);
var synchronizeTask2 = synchronizer.TrySynchronizeVirtualDocumentAsync(originalDocument, originalVirtualDocument, CancellationToken.None);
var newVirtualDocument = originalVirtualDocument.Fork(124);
var newDocument = originalDocument.Fork(124, newVirtualDocument);
var args = new LSPDocumentChangeEventArgs(originalDocument, newDocument, LSPDocumentChangeKind.VirtualDocumentChanged);
// Act
synchronizer.DocumentManager_Changed(DocumentManager, args);
var result1 = await synchronizeTask1.ConfigureAwait(false);
var result2 = await synchronizeTask2.ConfigureAwait(false);
// Assert
Assert.True(result1);
Assert.True(result2);
}
public async Task TrySynchronizeVirtualDocumentAsync_SynchronizesAfterUpdate_ReturnsTrue()
{
// Arrange
var synchronizer = new DefaultLSPDocumentSynchronizer(DocumentManager, JoinableTaskContext);
synchronizer._synchronizationTimeout = TimeSpan.FromMilliseconds(500);
var originalVirtualDocument = new TestVirtualDocumentSnapshot(VirtualDocumentUri, 123);
var originalDocument = new TestLSPDocumentSnapshot(LSPDocumentUri, 124, originalVirtualDocument);
// Start synchronization, this will hang until we invoke a DocumentManager_Changed event because the above virtual document expects host doc version 123 but the host doc is 124
var synchronizeTask = synchronizer.TrySynchronizeVirtualDocumentAsync(originalDocument, originalVirtualDocument, CancellationToken.None);
// Create a virtual and host doc that are synchronized (both at version 124).
var newVirtualDocument = originalVirtualDocument.Fork(124);
var newDocument = originalDocument.Fork(124, newVirtualDocument);
var args = new LSPDocumentChangeEventArgs(originalDocument, newDocument, LSPDocumentChangeKind.VirtualDocumentChanged);
// Act
synchronizer.DocumentManager_Changed(DocumentManager, args);
var result = await synchronizeTask.ConfigureAwait(false);
// Assert
Assert.True(result);
}
public async Task TrySynchronizeVirtualDocumentAsync_SimultaneousDifferentSynchronizationRequests_CancelsFirst_ReturnsFalseThenTrue()
{
// Arrange
var synchronizer = new DefaultLSPDocumentSynchronizer(DocumentManager, JoinableTaskContext);
synchronizer._synchronizationTimeout = TimeSpan.FromMilliseconds(500);
var originalVirtualDocument = new TestVirtualDocumentSnapshot(VirtualDocumentUri, 123);
var originalDocument = new TestLSPDocumentSnapshot(LSPDocumentUri, 124, originalVirtualDocument);
// Start synchronization that will hang because 123 != 124
var synchronizeTask1 = synchronizer.TrySynchronizeVirtualDocumentAsync(originalDocument, originalVirtualDocument, CancellationToken.None);
var newVirtualDocument = originalVirtualDocument.Fork(124);
var newDocument = originalDocument.Fork(125, newVirtualDocument);
// Start another synchronization that will also hang because 124 != 125. However, this synchronization request is for the same addressable virtual document (same URI)
// therefore requesting a second synchronization with a different host doc version expectation will cancel the original synchronization request resulting it returning
// false.
var synchronizeTask2 = synchronizer.TrySynchronizeVirtualDocumentAsync(newDocument, newVirtualDocument, CancellationToken.None);
var finalVirtualDocument = newVirtualDocument.Fork(125);
var finalDocument = newDocument.Fork(125, finalVirtualDocument);
var args = new LSPDocumentChangeEventArgs(newDocument, finalDocument, LSPDocumentChangeKind.VirtualDocumentChanged);
// Act
synchronizer.DocumentManager_Changed(DocumentManager, args);
var result1 = await synchronizeTask1.ConfigureAwait(false);
var result2 = await synchronizeTask2.ConfigureAwait(false);
// Assert
Assert.False(result1);
Assert.True(result2);
}