public async Task TestPickTheRightPreview_WithPreference()
{
using (var workspace = CreateWorkspaceFromFile("class D {}", null, null))
{
Document document = null;
SolutionPreviewResult previews = null;
GetMainDocumentAndPreviews(workspace, out document, out previews);
// Should return preview that matches the preferred (added) project.
var preview = await previews.TakeNextPreviewAsync(preferredProjectId : s_addedProjectId).ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is string);
var text = preview as string;
Assert.Contains(AddedProjectName, text, StringComparison.Ordinal);
// Should return preview that matches the preferred (changed) document.
preview = await previews.TakeNextPreviewAsync(preferredDocumentId : document.Id).ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is IWpfDifferenceViewer);
var diffView = preview as IWpfDifferenceViewer;
text = diffView.RightView.TextBuffer.AsTextContainer().CurrentText.ToString();
Assert.Equal(ChangedDocumentText, text);
diffView.Close();
// There is no longer a preview for the preferred project. Should return the first remaining preview.
preview = await previews.TakeNextPreviewAsync(preferredProjectId : s_addedProjectId).ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is IWpfDifferenceViewer);
diffView = preview as IWpfDifferenceViewer;
text = diffView.RightView.TextBuffer.AsTextContainer().CurrentText.ToString();
Assert.Contains(AddedDocumentName, text, StringComparison.Ordinal);
Assert.Contains(AddedDocumentText, text, StringComparison.Ordinal);
diffView.Close();
// There is no longer a preview for the preferred document. Should return the first remaining preview.
preview = await previews.TakeNextPreviewAsync(preferredDocumentId : document.Id).ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is string);
text = preview as string;
Assert.Contains(s_removedMetadataReferenceDisplayName, text, StringComparison.Ordinal);
// There are no more previews.
preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.Null(preview);
preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.Null(preview);
}
}
public async Task TestPickTheRightPreview_NoPreference()
{
using (var workspace = CreateWorkspaceFromFile("class D {}", null, null))
{
Document document = null;
SolutionPreviewResult previews = null;
GetMainDocumentAndPreviews(workspace, out document, out previews);
// The changed document comes first.
var preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is IWpfDifferenceViewer);
var diffView = preview as IWpfDifferenceViewer;
var text = diffView.RightView.TextBuffer.AsTextContainer().CurrentText.ToString();
Assert.Equal(ChangedDocumentText, text);
diffView.Close();
// The added document comes next.
preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is IWpfDifferenceViewer);
diffView = preview as IWpfDifferenceViewer;
text = diffView.RightView.TextBuffer.AsTextContainer().CurrentText.ToString();
Assert.Contains(AddedDocumentName, text, StringComparison.Ordinal);
Assert.Contains(AddedDocumentText, text, StringComparison.Ordinal);
diffView.Close();
// Then comes the removed metadata reference.
preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is string);
text = preview as string;
Assert.Contains(s_removedMetadataReferenceDisplayName, text, StringComparison.Ordinal);
// And finally the added project.
preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.NotNull(preview);
Assert.True(preview is string);
text = preview as string;
Assert.Contains(AddedProjectName, text, StringComparison.Ordinal);
// There are no more previews.
preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.Null(preview);
preview = await previews.TakeNextPreviewAsync().ConfigureAwait(true);
Assert.Null(preview);
}
}
