public void GCCallbackTest()
{
bool collectedTextView = false;
TextView textView = new TextViewWithGCCallback(delegate { collectedTextView = true; });
textView = null;
GarbageCollect();
Assert.IsTrue(collectedTextView);
}
// using a method to ensure the local variables can be garbage collected after the method returns
void DocumentDoesNotHoldReferenceToLineMargin_CreateMargin(TextDocument textDocument, Action finalizeAction)
{
TextView textView = new TextViewWithGCCallback(finalizeAction)
{
Document = textDocument
};
LineNumberMargin margin = new LineNumberMargin()
{
TextView = textView
};
}
public void DocumentDoesNotHoldReferenceToTextView()
{
bool collectedTextView = false;
TextDocument textDocument = new TextDocument();
Assert.AreEqual(0, textDocument.LineTrackers.Count);
TextView textView = new TextViewWithGCCallback(delegate { collectedTextView = true; });
textView.Document = textDocument;
Assert.AreEqual(1, textDocument.LineTrackers.Count);
textView = null;
GarbageCollect();
Assert.IsTrue(collectedTextView);
// document cannot immediately clear the line tracker
Assert.AreEqual(1, textDocument.LineTrackers.Count);
// but it should clear it on the next change
textDocument.Insert(0, "a");
Assert.AreEqual(0, textDocument.LineTrackers.Count);
}
public void DocumentDoesNotHoldReferenceToTextView()
{
bool collectedTextView = false;
TextDocument textDocument = new TextDocument();
Assert.AreEqual(0, textDocument.LineTrackers.Count);
TextView textView = new TextViewWithGCCallback(delegate { collectedTextView = true; });
textView.Document = textDocument;
Assert.AreEqual(1, textDocument.LineTrackers.Count);
textView = null;
GarbageCollect();
Assert.IsTrue(collectedTextView);
// document cannot immediately clear the line tracker
Assert.AreEqual(1, textDocument.LineTrackers.Count);
// but it should clear it on the next change
textDocument.Insert(0, "a");
Assert.AreEqual(0, textDocument.LineTrackers.Count);
}
public void GCCallbackTest()
{
bool collectedTextView = false;
TextView textView = new TextViewWithGCCallback(delegate { collectedTextView = true; });
textView = null;
GarbageCollect();
Assert.IsTrue(collectedTextView);
}
// using a method to ensure the local variables can be garbage collected after the method returns
void DocumentDoesNotHoldReferenceToLineMargin_CreateMargin(TextDocument textDocument, Action finalizeAction)
{
TextView textView = new TextViewWithGCCallback(finalizeAction) {
Document = textDocument
};
LineNumberMargin margin = new LineNumberMargin() {
TextView = textView
};
}
