public void GetLatestSyntaxTreeAsync_MultipleCallsDifferentSnapshotsReturnDifferentTasks()
{
// Arrange
var documentTracker = CreateDocumentTracker();
using (var parser = new DefaultVisualStudioRazorParser(
Dispatcher,
documentTracker,
ProjectEngineFactory,
new DefaultErrorReporter(),
Mock.Of <VisualStudioCompletionBroker>()))
{
var latestChange = new SourceChange(0, 0, string.Empty);
var latestSnapshot = documentTracker.TextBuffer.CurrentSnapshot;
parser._latestChangeReference = new BackgroundParser.ChangeReference(latestChange, latestSnapshot);
var snapshot1 = new StringTextSnapshot("Snapshot 1");
var snapshot2 = new StringTextSnapshot("Snapshot 2");
// Act
var getLatestSyntaxTreeTask1 = parser.GetLatestSyntaxTreeAsync(snapshot1);
var getLatestSyntaxTreeTask2 = parser.GetLatestSyntaxTreeAsync(snapshot2);
// Assert
Assert.NotSame(getLatestSyntaxTreeTask1, getLatestSyntaxTreeTask2);
}
}
public async Task GetLatestSyntaxTreeAsync_WaitsForParse()
{
// Arrange
var documentTracker = CreateDocumentTracker();
using (var parser = new DefaultVisualStudioRazorParser(
Dispatcher,
documentTracker,
ProjectEngineFactory,
new DefaultErrorReporter(),
Mock.Of <VisualStudioCompletionBroker>()))
{
var latestChange = new SourceChange(0, 0, string.Empty);
var latestSnapshot = documentTracker.TextBuffer.CurrentSnapshot;
parser._latestChangeReference = new BackgroundParser.ChangeReference(latestChange, latestSnapshot);
var codeDocument = TestRazorCodeDocument.CreateEmpty();
var syntaxTree = RazorSyntaxTree.Parse(TestRazorSourceDocument.Create());
codeDocument.SetSyntaxTree(syntaxTree);
var args = new BackgroundParserResultsReadyEventArgs(
parser._latestChangeReference,
codeDocument);
// Act - 1
var getLatestSyntaxTreeTask = parser.GetLatestSyntaxTreeAsync(StringTextSnapshot.Empty);
// Assert - 1
Assert.False(getLatestSyntaxTreeTask.IsCompleted);
// Act - 2
await Task.Run(() => parser.OnResultsReady(sender: null, args));
// Assert - 2
Assert.True(getLatestSyntaxTreeTask.IsCompleted);
// Act - 3
var latestSyntaxTree = await getLatestSyntaxTreeTask;
// Assert - 3
Assert.Same(latestSyntaxTree, syntaxTree);
}
}
public async Task GetLatestSyntaxTreeAsync_ParserDisposed_ReturnsImmediately()
{
// Arrange
var documentTracker = CreateDocumentTracker();
var syntaxTree = RazorSyntaxTree.Parse(TestRazorSourceDocument.Create());
DefaultVisualStudioRazorParser parser;
using (parser = new DefaultVisualStudioRazorParser(
Dispatcher,
documentTracker,
ProjectEngineFactory,
new DefaultErrorReporter(),
Mock.Of <VisualStudioCompletionBroker>()))
{
var latestChange = new SourceChange(0, 0, string.Empty);
var latestSnapshot = documentTracker.TextBuffer.CurrentSnapshot;
parser._latestChangeReference = new BackgroundParser.ChangeReference(latestChange, latestSnapshot);
var codeDocument = TestRazorCodeDocument.CreateEmpty();
codeDocument.SetSyntaxTree(syntaxTree);
var args = new BackgroundParserResultsReadyEventArgs(
parser._latestChangeReference,
codeDocument);
// Initialize the document with some content so we have a syntax tree to return.
await Task.Run(() => parser.OnResultsReady(sender: null, args));
}
var newerSnapshot = new StringTextSnapshot("Newer", versionNumber: 1337);
// Act - 1
var getLatestSyntaxTreeTask = parser.GetLatestSyntaxTreeAsync(newerSnapshot);
// Assert - 1
Assert.True(getLatestSyntaxTreeTask.IsCompleted);
// Act - 2
var latestSyntaxTree = await getLatestSyntaxTreeTask;
// Assert - 2
Assert.Same(latestSyntaxTree, syntaxTree);
}