API Referenceclass

class TestRenderer

A class that represents an in-memory application render context.

class TestRenderer extends RenderContext;

Notes

• This class behaves mostly like a ‘real’ renderer, but only keeps rendered elements in memory. The elements can be queried and validated using e.g. expectOutputAsync().

Instance members

• isTestRenderer readonly
  Flag for duck typing.
• modalFactory
  The default modal factory.
• getRenderCallback()
  Returns a global render callback, which adds new output to the root element.
• tryFocusElement()
  Attempts to set input focus to the specified element in the background.
• transform()
  Transforms or animates the provided output element (not supported in test renderer).
• createObserver()
  Attaches a renderer to the the provided UI element (called internally).
• clear()
  Clears all existing output.
• remount()
  Re-mounts mounted content (not supported in test renderer, but does emit a change event).
• setTitle()
  Does nothing (required by renderer class).
• hasOutput()
  Returns true if any output is currently rendered at all.
• expectOutput()
  Creates an assertion for the currently rendered output with the provided (optional) selection filter(s).
• expectOutputAsync()
  Waits for output to be rendered, that matches the provided selection filter(s).
• expectMessageDialogAsync()
  Waits for an alert or confirmation dialog to be rendered, that contains the provided text(s).
• getOutputDump()
  Returns an object representation of (selected) output.

Inherited members

• render()
  Renders a view as root, until the view object is unlinked.
• emit()
  Emits an event, immediately calling all event handlers.
• emitChange()
  Emits a change event.
• listen()
  Adds a handler for all events emitted by this object.
• listenOnce()
  Returns a promise for a single event with the provided name.
• listenAsync()
  Adds a handler for all events emitted by this object, and returns an async iterable.
• observe()
  Observes a property, a bound property from an attached parent, or an observable object.
• observeAsync()
  Observes one or more targets asynchronously, batching or debouncing/throttling updates.
• attach() protected
  Attaches the specified observable object to this object.
• isUnlinked()
  Returns true if the object has been unlinked.
• unlink()
  Unlinks this observable object.
• beforeUnlink() protected
  A method that’s called immediately before unlinking an object, can be overridden.