import "jest";
import * as operations from "../operations";
import { EditorState } from "prosemirror-state";
import { compose } from "../../compose";
import "../../__specs__/expect.toMatchEditorState";
import { buildEditorState } from "../../__specs__/buildEditorState";

const { at } = compose;

describe(operations.insertAttachment.name, () => {
  const atToInsert = at({ id: "new" }).node;
  // Some selection bugs were originally missed by not having realistic
  // documents in the test cases, specifically having nodes *after* the
  // insertion point. This causes ProseMirror to choose the inserted node by
  // default, when in real world documents with other content, some other node
  // would be selected.
  const atExisting = at({ id: "old" }).node;

  function test(initial: EditorState, expected: EditorState) {
    const tr = initial.tr;
    operations.insertAttachment(tr, tr.selection.$anchor.pos, atToInsert);
    expect(initial.apply(tr)).toMatchEditorState(expected);
  }

  it("empty paragraph", () => {
    test(
      buildEditorState(({ doc, p }) => doc(p("{^}"), atExisting)),
      buildEditorState(({ doc }) => doc("{node}", atToInsert, atExisting))
    );
  });

  it("start of non-empty paragraph", () => {
    test(
      buildEditorState(({ doc, p }) => doc(p("{^}hello"), atExisting)),
      buildEditorState(({ doc, p }) => doc("{node}", atToInsert, p("hello"), atExisting))
    );
  });

  it("end of non-empty paragraph", () => {
    test(
      buildEditorState(({ doc, p }) => doc(p("hello{^}"), atExisting)),
      buildEditorState(({ doc, p }) => doc(p("hello"), "{node}", atToInsert, atExisting))
    );
  });

  it("text before and after in paragraph", () => {
    test(
      buildEditorState(({ doc, p }) => doc(p("hello{^}world"), atExisting)),
      buildEditorState(({ doc, p }) => doc(p("hello"), "{node}", atToInsert, p("world"), atExisting))
    );
  });

  it("in list item", () => {
    test(
      buildEditorState(({ doc, ul, li, p }) => doc(ul(li(p("hello{^}world"))), atExisting)),
      buildEditorState(({ doc, ul, li, p }) => doc(ul(li(p("hello"))), "{node}", atToInsert, ul(li(p("world"))), atExisting))
    );
  });

  it("wedge selection", () => {
    test(
      buildEditorState(({ doc, p }) => doc(p("hello"), "{wedge}", atExisting)),
      buildEditorState(({ doc, p }) => doc(p("hello"), "{node}", atToInsert, atExisting))
    );
  });
});