rafa/test/unit/core/Stream-detach.js

Rafa.js is a Javascript framework for building concurrent applications.

module.exports = (assert, Rafa) => {
  suite("detach", () => {
    test("root node", () => {
      Rafa.stream().detach();
    });

    test("remove single head node", () => {
      var root = Rafa.stream();
      var stream = root.each(Rafa.noop);
      stream.detach();
      assert.isNull(root.child);
    });

    test("remove head node", () => {
      var root = Rafa.stream();
      var tail = root.each(Rafa.noop);
      var head = root.each(Rafa.noop);
      head.detach();
      assert.equal(tail.prev, null);
      assert.equal(tail.next, null);
      assert.equal(root.child, tail);
    });

    test("remove tail node", () => {
      var root = Rafa.stream();
      var tail = root.each(Rafa.noop);
      var head = root.each(Rafa.noop);
      tail.detach();
      assert.equal(head.next, null);
      assert.equal(root.child, head);
    });

    test("remove mid node", () => {
      var root = Rafa.stream();
      var tail = root.each(Rafa.noop);
      var mid  = root.each(Rafa.noop);
      var head = root.each(Rafa.noop);
      mid.detach();
      assert.equal(head.next, tail);
      assert.equal(tail.prev, head);
      assert.equal(root.child, head);
    });

    test("call destroy", () => {
      var stream = Rafa.stream();
      var called;
      stream.destroy = () => called = true;
      stream.detach();
      assert.ok(called);
    });
  });
};