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

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

module.exports = (assert, Rafa) => {
  suite("once", () => {
    test("emits 1 done message", () => {
      var values = [];
      var stream = Rafa.stream();
      stream.once().done(v => values.push(v));
      stream.write(1);
      assert.equal(values[0], 1);
      assert.isNull(stream.child);
    });

    test("emits error done message", () => {
      var values = [];
      var stream = Rafa.stream();
      stream.once().error(v => values.push(v)).done(v => values.push(v));
      stream.write(new Error("oops"));
      assert.isNotNull(values[0]);
      assert.isUndefined(values[1]);
      assert.equal(values[0].message, "oops");
      assert.isNull(stream.child);
    });
  });
};