public void ClearValueTest()
{
object strokes, new_strokes, rlv_strokes;
InkPresenter ink = new InkPresenter();
// check initial value
strokes = ink.ReadLocalValue(InkPresenter.StrokesProperty);
Assert.AreEqual(DependencyProperty.UnsetValue, strokes, "initial strokes is not set");
// now try ClearValue
ink.ClearValue(InkPresenter.StrokesProperty);
// check that ReadLocalValue returns unset
rlv_strokes = ink.ReadLocalValue(InkPresenter.StrokesProperty);
Assert.AreEqual(DependencyProperty.UnsetValue, rlv_strokes, "ReadLocalValue after ClearValue is unset");
// check that GetValue returns a StrokeCollection
new_strokes = ink.GetValue(InkPresenter.StrokesProperty);
Assert.AreNotEqual(DependencyProperty.UnsetValue, new_strokes, "GetValue after a ClearValue is set");
Assert.IsNotNull(new_strokes as StrokeCollection, "GetValue after a ClearValue does not return null");
// check that ReadLocalValue still returns unset
rlv_strokes = ink.ReadLocalValue(InkPresenter.StrokesProperty);
Assert.AreEqual(DependencyProperty.UnsetValue, rlv_strokes, "ReadLocalValue after a GetValue still returns unset");
// add a stroke
strokes = new_strokes;
((StrokeCollection) strokes).Add(new Stroke());
// check that ReadLocalValue still returns unset
rlv_strokes = ink.ReadLocalValue(InkPresenter.StrokesProperty);
Assert.AreEqual(DependencyProperty.UnsetValue, rlv_strokes, "ReadLocalValue after adding a stroke still returns unset");
// check that GetValue still returns the same StrokeCollection
new_strokes = ink.GetValue(InkPresenter.StrokesProperty);
Assert.AreEqual(strokes, new_strokes, "strokes are the same");
// set the strokes to something
strokes = ink.Strokes = new StrokeCollection();
// check that ReadLocalValue doesn't return unset anymore
rlv_strokes = ink.ReadLocalValue(InkPresenter.StrokesProperty);
Assert.AreEqual(strokes, rlv_strokes, "ReadLocalValue returned the strokes we just set on it");
}
public void Register_CustomCanvasType2_Height_double ()
{
CustomCanvasType2 the_object = new CustomCanvasType2 ();
CustomCanvasType custom_canvas = new CustomCanvasType ();
Canvas canvas = new Canvas ();
DependencyProperty property;
DependencyPropertyInfo info;
DependencyPropertyInfo.ChangedInfo changed_info;
InkPresenter ink = new InkPresenter (); // The only builtin type derived from Canvas
object actual_value;
object previous_expected_value = (double) 0;
int iterations = 0;
int changes = 0;
CustomCanvasType2_Height_double = new DependencyPropertyInfo ("Height", typeof (CustomCanvasType2), typeof (double), true);
info = CustomCanvasType2_Height_double;
property = info.Property;
Assert.AreEqual (0.0, (double) the_object.GetValue (property));
Assert.AreEqual (0.0, (double) ink.GetValue (property));
Assert.AreEqual (0.0, (double) custom_canvas.GetValue (property));
Assert.Throws (delegate { the_object.SetValue (property, 1); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, ""); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, new CustomClass ()); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, null); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, new Canvas ()); }, typeof (ArgumentException));
//Assert.Throws (delegate { custom_canvas.SetValue (property, 1.1); }, typeof (ArgumentException));
foreach (object expected_value in new object [] { 1.1 }) {
iterations++;
the_object.SetValue (property, expected_value);
actual_value = the_object.GetValue (property);
if ((double) expected_value != (double) previous_expected_value) {
changes++;
changed_info = info.Changes [info.Changes.Count - 1];
DependencyPropertyChangedEventArgs args = changed_info.args;
Assert.AreEqual ((double) args.OldValue, (double) previous_expected_value);
Assert.AreEqual ((double) args.NewValue, (double) expected_value);
Assert.AreSame (changed_info.obj, the_object);
}
previous_expected_value = expected_value;
Assert.AreEqual ((double) expected_value, (double) actual_value, "Iteration #{0}", iterations);
Assert.AreEqual (changes, info.Changes.Count, "Iteration #{0} there should be {1} changes, but there were {2} changes", iterations, changes, info.Changes.Count);
}
}
public void Register_CustomCanvasType_Height_CustomDelegate ()
{
CustomCanvasType the_object = new CustomCanvasType ();
CustomCanvasType custom_canvas = new CustomCanvasType ();
Canvas canvas = new Canvas ();
CustomStruct custom_struct_1 = new CustomStruct (1);
CustomEnum custom_enum = CustomEnum.EnumValue1;
CustomDelegate custom_delegate = delegate { };
DependencyProperty property;
DependencyPropertyInfo info;
DependencyPropertyInfo.ChangedInfo changed_info;
InkPresenter ink = new InkPresenter (); // The only builtin type derived from Canvas
object actual_value;
object previous_expected_value = null;
int iterations = 0;
int changes = 0;
CustomCanvasType_Height_CustomDelegate = new DependencyPropertyInfo ("Height", typeof (CustomCanvasType), typeof (CustomDelegate), true);
info = CustomCanvasType_Height_CustomDelegate;
property = info.Property;
Assert.AreEqual (null, the_object.GetValue (property), "Default value 1");
Assert.AreEqual (null, ink.GetValue (property), "Default value 2");
Assert.Throws (delegate { the_object.SetValue (property, 0); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, 1); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, ""); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, new CustomClass ()); }, typeof (ArgumentException));
Assert.Throws (delegate { the_object.SetValue (property, new Canvas ()); }, typeof (ArgumentException));
foreach (object expected_value in new CustomDelegate [] { null, delegate { }, delegate { }, custom_delegate, custom_delegate }) {
iterations++;
the_object.SetValue (property, expected_value);
actual_value = the_object.GetValue (property);
if (!object.Equals (expected_value, previous_expected_value)) {
changes++;
changed_info = info.Changes [info.Changes.Count - 1];
DependencyPropertyChangedEventArgs args = changed_info.args;
Assert.AreEqual (args.OldValue, previous_expected_value, "OldValue");
Assert.AreEqual (args.NewValue, expected_value, "NewValue");
Assert.AreSame (changed_info.obj, the_object);
}
previous_expected_value = expected_value;
Assert.AreEqual (expected_value, actual_value, "Iteration #{0}", iterations);
Assert.AreEqual (changes, info.Changes.Count, "Iteration #{0} there should be {1} changes, but there were {2} changes", iterations, changes, info.Changes.Count);
}
}
public void Register_Canvas_Custom_Canvas ()
{
Canvas canvas = new Canvas ();
CustomCanvasType custom_canvas = new CustomCanvasType ();
DependencyProperty property;
DependencyPropertyInfo info;
DependencyPropertyInfo.ChangedInfo changed_info;
InkPresenter ink = new InkPresenter (); // The only builtin type derived from Canvas
object actual_value;
object previous_expected_value = null;
int iterations = 0;
int changes = 0;
Canvas_Custom_Canvas = new DependencyPropertyInfo ("Custom", typeof (Canvas), typeof (Canvas), true);
info = Canvas_Custom_Canvas;
property = info.Property;
Assert.IsNull (canvas.GetValue (property));
Assert.IsNull (ink.GetValue (property));
Assert.Throws (delegate { canvas.SetValue (property, 1); }, typeof (ArgumentException));
Assert.Throws (delegate { canvas.SetValue (property, ""); }, typeof (ArgumentException));
Assert.Throws (delegate { canvas.SetValue (property, new CustomClass ()); }, typeof (ArgumentException));
foreach (object expected_value in new object [] { null, new Canvas (), null, canvas, canvas, null, new CustomCanvasType (), custom_canvas, custom_canvas, ink }) {
iterations++;
canvas.SetValue (property, expected_value);
actual_value = canvas.GetValue (property);
if (expected_value != previous_expected_value) {
changes++;
changed_info = info.Changes [info.Changes.Count - 1];
DependencyPropertyChangedEventArgs args = changed_info.args;
Assert.AreSame (args.OldValue, previous_expected_value);
Assert.AreSame (args.NewValue, expected_value);
Assert.AreSame (changed_info.obj, canvas);
}
previous_expected_value = expected_value;
Assert.AreSame (expected_value, actual_value, "Iteration #{0}", iterations);
Assert.AreEqual (changes, info.Changes.Count, "Iteration #{0} there should be {1} changes, but there were {2} changes", iterations, changes, info.Changes.Count);
}
}
public void ResetValueTest()
{
InkPresenter ink = new InkPresenter();
StrokeCollection strokes;
strokes = ink.GetValue(InkPresenter.StrokesProperty) as StrokeCollection;
// does setting the value to null reset the collection?
strokes.Add(new Stroke());
ink.Strokes = null;
strokes = ink.GetValue(InkPresenter.StrokesProperty) as StrokeCollection;
Assert.AreEqual(0, strokes.Count, "Nulled strokes not empty as expected");
// does clearing the value reset the collection?
strokes.Add(new Stroke());
ink.ClearValue(InkPresenter.StrokesProperty);
strokes = ink.GetValue(InkPresenter.StrokesProperty) as StrokeCollection;
Assert.AreEqual(0, strokes.Count, "Cleared strokes not empty as expected");
}