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

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

module.exports = (assert, Rafa) => {
  suite("until", () => {
    test("emits until inner message", () => {
      var values = [];
      var outer = Rafa.stream();
      var inner = Rafa.stream();
      outer.until(inner).each(v => values.push(v)).done(v => values.push(v));
      outer.write(1).write(2);
      inner.write(3);
      assert.equal(values.length, 4);
      assert.equal(values[0], 1);
      assert.equal(values[1], 2);
      assert.equal(values[2], 3);
      assert.equal(values[3], 3);
      assert.isNull(outer.child);
      assert.isNull(inner.child);
    });

    test("outer errors pass through", () => {
      var values = [];
      var outer = Rafa.stream();
      outer.until(Rafa.stream()).error(v => values.push(v)).done(v => values.push(v));
      outer.write(new Error("oops"));
      assert.equal(values.length, 1);
      assert.isNotNull(values[0]);
      assert.equal(values[0].message, "oops");
    });

    test("outer done detaches all", () => {
      var values = [];
      var outer = Rafa.stream();
      var inner = Rafa.stream();
      outer.until(inner).done(v => values.push(v));
      outer.write(1, true);
      assert.equal(values[0], 1);
      assert.isNull(outer.child);
      assert.isNull(inner.child);
    });
  });
};