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

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

module.exports = (assert, Rafa) => {
  suite("recover", () => {
    test("map errors to values", () => {
      var stream = Rafa.stream();
      var values = [];
      stream.recover(error => 2).each(v => values.push(v));
      stream.push(Rafa.context(), Rafa.errorMessage(1));
      assert.equal(values.length, 1);
      assert.equal(values[0], 2);
    });

    test("values and done messages pass through", () => {
      var stream = Rafa.stream();
      var values = [];
      stream.recover(error => 9).each(v => values.push(v)).done(v => values.push(v));
      
      stream.push(Rafa.context(), Rafa.message(1));
      assert.equal(values.length, 1);
      assert.equal(values[0], 1);

      stream.push(Rafa.context(), Rafa.doneMessage(2));
      assert.equal(values.length, 3);
      assert.equal(values[0], 1);
      assert.equal(values[1], 2);
      assert.equal(values[2], 2);
    });
  });
};