rafa/test/unit/core/Channel-read.js

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

module.exports = (assert, Rafa) => {
  suite("read", () => {
    test("no value or callback registered", () => {
      var l = Rafa.channel();
      assert.equal(l.read(Rafa.noop), 2);
      assert.equal(l.callback, Rafa.noop);
    });

    test("value available", () => {
      var l = Rafa.channel(1);
      var value;
      var callback = m => value = m;
      l.write(1);
      assert.equal(l.read(callback), 1);
      assert.equal(value, 1);
      assert.equal(l.buffer.length, 0);
      assert.isNull(l.callback);
    });

    test("callback is registered", () => {
      var l = Rafa.channel();
      l.read(Rafa.noop);
      assert.equal(l.read(Rafa.identity), 0);
      assert.equal(l.callback, Rafa.noop);
    });
  });
};