Configure DOMPurify hooks for link security. @see Requirements 13.6

* Count how many times a format was toggled * Used to determine expected final state * * @param toggles - Array of format toggles * @param formatT

* Create a collaborative document * @see Requirements 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9

* Create a collaborative whiteboard * @see Requirements 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9

* Creates a component instance without calling the constructor * (which requires Angular's injection context for inject()). * Manually wires the ser

* Create an empty editor state * * @returns Empty EditorState

* Helper: create a fresh fixture with emojiData set BEFORE first detectChanges * to avoid NG0100 when the component loads default emojis.

Create a new group.

* Creates an initial composer state with default values

* Helper to create mention HTML

* Creates a mock call log entry matching the shape consumed by CometChatCallLogs.

* Creates a mock call log with a call type, used for call initiation tests. * Includes `getType()` in addition to the standard call log methods.

Creates a mock logged-in user

* Creates a mock message with mention metadata for testing. * Simulates how the component builds message metadata with mentions. * * @param text -

* Creates a reactions request builder.

* Creates sticker message metadata following CometChat sticker extension format. * Mirrors the component's sticker metadata creation logic.

Delete a group (owner only).

* Derives the expected component name from the CSS file path. * * The component directory is named `cometchat-{component}`, so we strip * the `come

* Derive expected helper method names from a subject name. * The naming convention differs between UI-level (cc*) and SDK-wrapper (on*) subjects.

* Remove all SDK listeners.

Detach all real-time SDK listeners.

Detach the scroll event listener from the emoji list container.