message: tests for non-editable parts
diff: @@ -132,6 +132,44 @@ describe('editor/model', function() {
  expect(model.parts[1].text).toBe("\n");
  });
  });
  + describe('non-editable part manipulation', function() {
  + it('typing at start of non-editable part prepends', function() {
  + const renderer = createRenderer();
  + const pc = createPartCreator();
  + const model = new EditorModel([
  + pc.plain("try "),
  + pc.roomPill("#someroom"),
  + ], pc, renderer);
  + model.update("try foo#someroom", "insertText", {offset: 7, atNodeEnd: false});
  + expect(renderer.caret.index).toBe(0);
  + expect(renderer.caret.offset).toBe(7);
  + expect(model.parts.length).toBe(2);
  + expect(model.parts[0].type).toBe("plain");
  + expect(model.parts[0].text).toBe("try foo");
  + expect(model.parts[1].type).toBe("room-pill");
  + expect(model.parts[1].text).toBe("#someroom");
  + });
  + it('remove non-editable part with backspace', function() {
  + const renderer = createRenderer();
  + const pc = createPartCreator();
  + const model = new EditorModel([pc.roomPill("#someroom")], pc, renderer);
  + model.update("#someroo", "deleteContentBackward", {offset: 8, atNodeEnd: true});
  + expect(renderer.count).toBe(1);
  + expect(renderer.caret.index).toBe(-1);
  + expect(renderer.caret.offset).toBe(0);
  + expect(model.parts.length).toBe(0);
  + });
  + it('remove non-editable part with delete', function() {
  + const renderer = createRenderer();
  + const pc = createPartCreator();
  + const model = new EditorModel([pc.roomPill("#someroom")], pc, renderer);
  + model.update("someroom", "deleteContentForward", {offset: 0, atNodeEnd: false});
  + expect(renderer.count).toBe(1);
  + expect(renderer.caret.index).toBe(-1);
  + expect(renderer.caret.offset).toBe(0);
  + expect(model.parts.length).toBe(0);
  + });
  + });
  describe('auto-complete', function() {
  it('insert user pill', function() {
  const renderer = createRenderer();
  