rafa/test/unit/core/Enumerator-array.js

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

module.exports = (assert, Rafa) => {
  suite("array", () => {
    test("array with length of 0", () => {
      var message;
      var callback = m => message = m;
      var it = Rafa.Enumerator.array([]);
      it.next(callback);
      assert.ok(message.isDone);
      assert.isUndefined(message.value);
    });

    test("array with length of 1", () => {
      var it = Rafa.Enumerator.array([1]);
      var messages = [];
      var callback = m => messages.push(m);
      it.next(callback);
      assert.equal(messages[0].value, 1);
      assert.ok(messages[0].isDone);
    });

    test("array with length of 2", () => {
      var it = Rafa.Enumerator.array([1,2]);
      var messages = [];
      var callback = m => messages.push(m);
      it.next(callback);
      it.next(callback);
      assert.ok(!messages[0].isDone);
      assert.ok(messages[1].isDone);
      assert.equal(messages[0].value, 1);
      assert.equal(messages[1].value, 2);
    });

    test("throws CompleteError", () => {
      var it = Rafa.Enumerator.array([1]);
      var noop = it.noop;
      it.next(noop);
      assert.throws(() => it.next(noop), RangeError, "Enumerator is complete");
    });

    test("emits error message", () => {
      var it = Rafa.Enumerator.array([new RangeError("foo")]);
      it.next(message => {
        assert.ok(message.isError);
        assert.ok(message.error instanceof Error);
        assert.ok(message.error instanceof RangeError);
        assert.equal(message.error.message, "foo");
      });
    });
  });
};