public void CanAddRegions()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
// Act
builder.OpenElement(10, "parent"); // 0: <parent>
builder.OpenRegion(11); // 1: [region
builder.AddText(3, "Hello"); // 2: Hello
builder.OpenRegion(4); // 3: [region
builder.OpenElement(3, "another"); // 4: <another>
builder.CloseElement(); // </another>
builder.CloseRegion(); // ]
builder.AddText(6, "Goodbye"); // 5: Goodbye
builder.CloseRegion(); // ]
builder.CloseElement(); // </parent>
// Assert
Assert.Collection(builder.GetFrames(),
frame => AssertFrame.Element(frame, "parent", 6, 10),
frame => AssertFrame.Region(frame, 5, 11),
frame => AssertFrame.Text(frame, "Hello", 3),
frame => AssertFrame.Region(frame, 2, 4),
frame => AssertFrame.Element(frame, "another", 1, 3),
frame => AssertFrame.Text(frame, "Goodbye", 6));
}
public void CanClear()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
// Act
builder.AddText(0, "some text");
builder.OpenElement(1, "elem");
builder.AddText(2, "more text");
builder.CloseElement();
builder.Clear();
// Assert
Assert.Empty(builder.GetFrames());
}
public void CanAddAttributes()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
UIEventHandler eventHandler = eventInfo => { };
// Act
builder.OpenElement(0, "myelement"); // 0: <myelement
builder.AddAttribute(0, "attribute1", "value 1"); // 1: attribute1="value 1"
builder.AddAttribute(0, "attribute2", 123); // 2: attribute2=intExpression123>
builder.OpenElement(0, "child"); // 3: <child
builder.AddAttribute(0, "childevent", eventHandler); // 4: childevent=eventHandler>
builder.AddText(0, "some text"); // 5: some text
builder.CloseElement(); // </child>
builder.CloseElement(); // </myelement>
// Assert
Assert.Collection(builder.GetFrames(),
frame => AssertFrame.Element(frame, "myelement", 6),
frame => AssertFrame.Attribute(frame, "attribute1", "value 1"),
frame => AssertFrame.Attribute(frame, "attribute2", "123"),
frame => AssertFrame.Element(frame, "child", 3),
frame => AssertFrame.Attribute(frame, "childevent", eventHandler),
frame => AssertFrame.Text(frame, "some text"));
}
public void CanAddNonStringValueAsText()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
var nullObject = (object)null;
// Act
builder.AddText(0, 1234);
builder.AddText(0, nullObject);
// Assert
var frames = builder.GetFrames();
Assert.Collection(frames,
frame => AssertFrame.Text(frame, "1234"),
frame => AssertFrame.Text(frame, string.Empty));
}
public void ClosedElementsHaveCorrectSubtreeLength()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
// Act
builder.OpenElement(0, "my element");
builder.AddText(0, "child 1");
builder.AddText(0, "child 2");
builder.CloseElement();
builder.AddText(0, "unrelated item");
// Assert
var frames = builder.GetFrames();
Assert.Equal(4, frames.Count);
AssertFrame.Element(frames.Array[0], "my element", 3);
}
public void BuildRenderTree(RenderTreeBuilder builder)
{
builder.OpenElement(0, "h1");
builder.AddText(1, "Hello from RenderTree");
builder.CloseElement();
builder.OpenElement(2, "ul");
builder.OpenElement(3, "li");
builder.AddText(4, "First item");
builder.CloseElement();
builder.OpenElement(5, "li");
builder.AddText(6, "Second item");
builder.CloseElement();
builder.CloseElement();
}
public void CanAddText()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
var nullString = (string)null;
// Act
builder.AddText(0, "First item");
builder.AddText(0, nullString);
builder.AddText(0, "Second item");
// Assert
var frames = builder.GetFrames();
Assert.Collection(frames,
frame => AssertFrame.Text(frame, "First item"),
frame => AssertFrame.Text(frame, string.Empty),
frame => AssertFrame.Text(frame, "Second item"));
}
protected override void BuildRenderTree(RenderTreeBuilder builder)
{
if (_isFirstTime) // Don't want an infinite loop
{
_isFirstTime = false;
Parent.TriggerRender();
}
builder.AddText(0, "Child is here");
}
public void CannotAddEventHandlerAttributeToText()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
// Act/Assert
Assert.Throws <InvalidOperationException>(() =>
{
builder.OpenElement(0, "some element");
builder.AddText(1, "hello");
builder.AddAttribute(2, "name", eventInfo => { });
});
}
public void ClosedEmptyElementsHaveSubtreeLengthOne()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
// Act
builder.AddText(0, "some frame so that the element isn't at position zero");
builder.OpenElement(0, "my element");
builder.CloseElement();
// Assert
var frames = builder.GetFrames();
Assert.Equal(2, frames.Count);
AssertFrame.Element(frames.Array[1], "my element", 1);
}
public void BuildRenderTree(RenderTreeBuilder builder)
{
builder.AddText(0, "Parent here");
if (IncludeChild)
{
builder.OpenComponent <T>(1);
if (ChildParameters != null)
{
var sequence = 2;
foreach (var kvp in ChildParameters)
{
builder.AddAttribute(sequence++, kvp.Key, kvp.Value);
}
}
builder.CloseComponent();
}
}
public void CanNestElements()
{
// Arrange
var builder = new RenderTreeBuilder(new TestRenderer());
// Act
builder.AddText(0, "standalone text 1"); // 0: standalone text 1
builder.OpenElement(0, "root"); // 1: <root>
builder.AddText(0, "root text 1"); // 2: root text 1
builder.AddText(0, "root text 2"); // 3: root text 2
builder.OpenElement(0, "child"); // 4: <child>
builder.AddText(0, "child text"); // 5: child text
builder.OpenElement(0, "grandchild"); // 6: <grandchild>
builder.AddText(0, "grandchild text 1"); // 7: grandchild text 1
builder.AddText(0, "grandchild text 2"); // 8: grandchild text 2
builder.CloseElement(); // </grandchild>
builder.CloseElement(); // </child>
builder.AddText(0, "root text 3"); // 9: root text 3
builder.OpenElement(0, "child 2"); // 10: <child 2>
builder.CloseElement(); // </child 2>
builder.CloseElement(); // </root>
builder.AddText(0, "standalone text 2"); // 11: standalone text 2
// Assert
Assert.Collection(builder.GetFrames(),
frame => AssertFrame.Text(frame, "standalone text 1"),
frame => AssertFrame.Element(frame, "root", 10),
frame => AssertFrame.Text(frame, "root text 1"),
frame => AssertFrame.Text(frame, "root text 2"),
frame => AssertFrame.Element(frame, "child", 5),
frame => AssertFrame.Text(frame, "child text"),
frame => AssertFrame.Element(frame, "grandchild", 3),
frame => AssertFrame.Text(frame, "grandchild text 1"),
frame => AssertFrame.Text(frame, "grandchild text 2"),
frame => AssertFrame.Text(frame, "root text 3"),
frame => AssertFrame.Element(frame, "child 2", 1),
frame => AssertFrame.Text(frame, "standalone text 2"));
}
public void BuildRenderTree(RenderTreeBuilder builder)
{
builder.AddText(0, $"Notifications: {NotificationsCount}");
}
public void BuildRenderTree(RenderTreeBuilder builder)
{
builder.AddText(100, $"Hello from {nameof(FakeComponent2)}");
}
public void RecognizesNewItemsBeingInserted()
{
// Arrange
oldTree.AddText(0, "text0");
oldTree.AddText(2, "text2");
newTree.AddText(0, "text0");
newTree.AddText(1, "text1");
newTree.AddText(2, "text2");
// Act
var result = GetSingleUpdatedComponent();
// Assert
Assert.Collection(result.Edits,
entry =>
{
AssertEdit(entry, RenderTreeEditType.PrependFrame, 1);
Assert.Equal(0, entry.ReferenceFrameIndex);
AssertFrame.Text(result.ReferenceFrames.Array[0], "text1", 1);
});
}
protected override void BuildRenderTree(RenderTreeBuilder builder)
{
builder.AddText(0, Message);
}
public void BuildRenderTree(RenderTreeBuilder builder)
{
builder.AddText(0, $"Hello from {nameof(TestComponent)}");
}
public void BuildRenderTree(RenderTreeBuilder builder)
{
builder.AddText(0, Message);
}