rafa/test/unit/core/Property-propagate.js

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

module.exports = (assert, Rafa) => {
  suite("propagate", () => {
    test("reset", () => {
      var a = Rafa.property(1);
      var b = Rafa.property(() => a + 1);
      var c = Rafa.property(() => a + b);
      b.mark = 1;
      c.mark = 1;
      Rafa.Property.prototype.util.reset(a.properties);
      assert.equal(b.mark, 0);
      assert.equal(c.mark, 0);
    });

    test("visit", () => {
      var a = Rafa.property(1);
      var b = Rafa.property(() => a + 1);
      var c = Rafa.property(() => a + b);
      var ordered = [];
      Rafa.Property.prototype.util.reset(a.properties);
      Rafa.Property.prototype.util.visit(ordered, a);
      assert.equal(ordered.length, 3);
      assert.equal(ordered[0], a);
      assert.equal(ordered[1], b);
      assert.equal(ordered[2], c);
    });

    test("set value", () => {
      var a = Rafa.property(1);
      var b = Rafa.property(() => a + 1);
      var c = Rafa.property(() => a + b);
      a.set(2);
      assert.equal(a.get(), 2);
      assert.equal(b.get(), 3);
      assert.equal(c.get(), 5);
    });

    test("single property", () => {
      var a = Rafa.property(1);
      var values = [];
      a.each(v => values.push(v));
      a.set(2);
      assert.equal(values[0], 2);
    });

    test("push to stream", () => {
      var a = Rafa.property(1);
      var b = Rafa.property(() => a + 1);
      var c = Rafa.property(() => a + b);
      var values = [];

      a.each(v => values.push('a' + v));
      b.each(v => values.push('b' + v));
      c.each(v => values.push('c' + v));

      a.set(1);

      assert.equal(values[0], 'a1');
      assert.equal(values[1], 'b2');
      assert.equal(values[2], 'c3');
    });
  });
};