public void IgnoresUpdatesToAttributesIfUnexpectedValueTypeSupplied()
{
// Currently we only allow the client to supply a string or a bool, since those are the
// only types of values we render onto attributes
// Arrange
var valuePropName = "testprop";
var renderer = new TestRenderer();
var builder = new RenderTreeBuilder();
builder.OpenElement(0, "elem");
builder.AddAttribute(1, "eventname", (Action)(() => { }));
builder.SetUpdatesAttributeName(valuePropName);
builder.AddAttribute(2, valuePropName, "initial value");
builder.CloseElement();
var frames = builder.GetFrames();
frames.Array[1] = frames.Array[1].WithAttributeEventHandlerId(123); // An unrelated event
// Act
RenderTreeUpdater.UpdateToMatchClientState(builder, 123, new object());
// Assert
Assert.Collection(frames.AsEnumerable(),
frame => AssertFrame.Element(frame, "elem", 3, 0),
frame => AssertFrame.Attribute(frame, "eventname", v => Assert.IsType <Action>(v), 1),
frame => AssertFrame.Attribute(frame, valuePropName, "initial value", 2));
}
public void ExpandsAllAncestorsWhenAddingAttribute()
{
// Arrange
var valuePropName = "testprop";
var renderer = new TestRenderer();
var builder = new RenderTreeBuilder();
builder.OpenElement(0, "grandparent");
builder.OpenRegion(1);
builder.OpenElement(2, "sibling before"); // To show that non-ancestors aren't expanded
builder.CloseElement();
builder.OpenElement(3, "elem with handler");
builder.AddAttribute(4, "eventname", (Action)(() => { }));
builder.SetUpdatesAttributeName(valuePropName);
builder.CloseElement(); // elem with handler
builder.CloseRegion();
builder.CloseElement(); // grandparent
var frames = builder.GetFrames();
frames.Array[4] = frames.Array[4].WithAttributeEventHandlerId(123);
// Act
RenderTreeUpdater.UpdateToMatchClientState(builder, 123, "new value");
frames = builder.GetFrames();
// Assert
Assert.Collection(frames.AsEnumerable(),
frame => AssertFrame.Element(frame, "grandparent", 6, 0),
frame => AssertFrame.Region(frame, 5, 1),
frame => AssertFrame.Element(frame, "sibling before", 1, 2),
frame => AssertFrame.Element(frame, "elem with handler", 3, 3),
frame => AssertFrame.Attribute(frame, valuePropName, "new value", RenderTreeDiffBuilder.SystemAddedAttributeSequenceNumber),
frame => AssertFrame.Attribute(frame, "eventname", v => Assert.IsType <Action>(v), 4));
}
public void IgnoresUnknownEventHandlerId()
{
// Arrange
var valuePropName = "testprop";
var renderer = new TestRenderer();
var builder = new RenderTreeBuilder();
builder.OpenElement(0, "elem");
builder.AddAttribute(1, "eventname", (Action)(() => { }));
builder.SetUpdatesAttributeName(valuePropName);
builder.AddAttribute(2, valuePropName, "initial value");
builder.CloseElement();
var frames = builder.GetFrames();
frames.Array[1] = frames.Array[1].WithAttributeEventHandlerId(123); // An unrelated event
// Act
RenderTreeUpdater.UpdateToMatchClientState(builder, 456, "new value");
// Assert
Assert.Collection(frames.AsEnumerable(),
frame => AssertFrame.Element(frame, "elem", 3, 0),
frame => AssertFrame.Attribute(frame, "eventname", v => Assert.IsType <Action>(v), 1),
frame => AssertFrame.Attribute(frame, valuePropName, "initial value", 2));
}
public void AddsAttributeIfNotFound()
{
// Arrange
var valuePropName = "testprop";
var renderer = new TestRenderer();
var builder = new RenderTreeBuilder();
builder.OpenElement(0, "elem");
builder.AddAttribute(1, "eventname", (Action)(() => { }));
builder.SetUpdatesAttributeName(valuePropName);
builder.CloseElement();
var frames = builder.GetFrames();
frames.Array[1] = frames.Array[1].WithAttributeEventHandlerId(123);
// Act
RenderTreeUpdater.UpdateToMatchClientState(builder, 123, "new value");
frames = builder.GetFrames();
// Assert
Assert.Collection(frames.AsEnumerable(),
frame => AssertFrame.Element(frame, "elem", 3, 0),
frame => AssertFrame.Attribute(frame, valuePropName, "new value", RenderTreeDiffBuilder.SystemAddedAttributeSequenceNumber),
frame => AssertFrame.Attribute(frame, "eventname", v => Assert.IsType <Action>(v), 1));
}
public void UpdatesOnlyMatchingAttributeValue()
{
// Arrange
var valuePropName = "testprop";
var renderer = new TestRenderer();
var builder = new RenderTreeBuilder();
builder.OpenElement(0, "elem");
builder.AddAttribute(1, "eventname", (Action)(() => { }));
builder.SetUpdatesAttributeName(valuePropName);
builder.AddAttribute(2, valuePropName, "unchanged 1");
builder.CloseElement();
builder.OpenElement(3, "elem");
builder.AddAttribute(4, "eventname", (Action)(() => { }));
builder.SetUpdatesAttributeName(valuePropName);
builder.AddAttribute(5, "unrelated prop before", "unchanged 2");
builder.AddAttribute(6, valuePropName, "initial value");
builder.AddAttribute(7, "unrelated prop after", "unchanged 3");
builder.CloseElement();
var frames = builder.GetFrames();
frames.Array[1] = frames.Array[1].WithAttributeEventHandlerId(123); // An unrelated event
frames.Array[4] = frames.Array[4].WithAttributeEventHandlerId(456);
// Act
RenderTreeUpdater.UpdateToMatchClientState(builder, 456, "new value");
// Assert
Assert.Collection(frames.AsEnumerable(),
frame => AssertFrame.Element(frame, "elem", 3, 0),
frame => AssertFrame.Attribute(frame, "eventname", v => Assert.IsType <Action>(v), 1),
frame => AssertFrame.Attribute(frame, valuePropName, "unchanged 1", 2),
frame => AssertFrame.Element(frame, "elem", 5, 3),
frame => AssertFrame.Attribute(frame, "eventname", v => Assert.IsType <Action>(v), 4),
frame => AssertFrame.Attribute(frame, "unrelated prop before", "unchanged 2", 5),
frame => AssertFrame.Attribute(frame, valuePropName, "new value", 6),
frame => AssertFrame.Attribute(frame, "unrelated prop after", "unchanged 3", 7));
}