signal-desktop/test/views/scroll_down_button_view_test.js

/*
 * vim: ts=4:sw=4:expandtab
 */
describe('ScrollDownButtonView', function() {
    it('renders with count = 0', function() {
        var view = new Whisper.ScrollDownButtonView();
        view.render();
        assert.equal(view.count, 0);
        assert.match(view.$el.html(), /Scroll to bottom/);
    });

    it('renders with count = 1', function() {
        var view = new Whisper.ScrollDownButtonView({count: 1});
        view.render();
        assert.equal(view.count, 1);
        assert.match(view.$el.html(), /new-messages/);
        assert.match(view.$el.html(), /New message below/);
    });

    it('renders with count = 2', function() {
        var view = new Whisper.ScrollDownButtonView({count: 2});
        view.render();
        assert.equal(view.count, 2);

        assert.match(view.$el.html(), /new-messages/);
        assert.match(view.$el.html(), /New messages below/);
    });

    it('increments count and re-renders', function() {
        var view = new Whisper.ScrollDownButtonView();
        view.render();
        assert.equal(view.count, 0);
        assert.notMatch(view.$el.html(), /new-messages/);
        view.increment(1);
        assert.equal(view.count, 1);
        assert.match(view.$el.html(), /new-messages/);
    });
});