n ok");
          assert.isTrue(positionEquals(c2, 50, 150, 0, 50), "child 2 position ok");
          assert.isTrue(positionEquals(c3, 150, 300, 0, 50), "child 3 position ok");
        });
      });

      suite('alignment', function() {
        var container;

        setup(function() {
          container = fixture('single-child');
          container.classList.add('horizontal');
        });

        test('stretch (default)', function() {
          container.classList.add('tall');
          assert.isTrue(