import { load } from "./testAppDef";

describe("controlFlow", () => {

    it("should display simple div, with always true render function", async () => {

        const {dom} = await load({
            _component: "testlib/div",
            className: "my-test-class",
            _id: "always_render"
        });

        expect(dom.window.document.body.children.length).toBe(1);
        const child = dom.window.document.body.children[0];
        expect(child.className).toBe("my-test-class");

    })

    it("should not display div, with always false render function", async () => {

        const {dom} = await load({
            _component: "testlib/div",
            className: "my-test-class",
            _id: "never_render"
        });

        expect(dom.window.document.body.children.length).toBe(0);

    })

    it("should display 3 divs in a looped render function", async () => {

        const {dom} = await load({
            _component: "testlib/div",
            className: "my-test-class",
            _id: "three_clones"
        });

        expect(dom.window.document.body.children.length).toBe(3);

        const child0 = dom.window.document.body.children[0];
        expect(child0.className).toBe("my-test-class");

        const child1 = dom.window.document.body.children[1];
        expect(child1.className).toBe("my-test-class");

        const child2 = dom.window.document.body.children[2];
        expect(child2.className).toBe("my-test-class");

    })

    it("should display 3 div, in a looped render, as children", async () => {
        const {dom} = await load({
            _component: "testlib/div",
            _children: [
                {
                    _component: "testlib/div",
                    className: "my-test-class",
                    _id: "three_clones" 
                }
            ]
        });

        expect(dom.window.document.body.children.length).toBe(1);

        const rootDiv = dom.window.document.body.children[0];
        expect(rootDiv.children.length).toBe(3);
        
        expect(rootDiv.children[0].className).toBe("my-test-class");
        expect(rootDiv.children[1].className).toBe("my-test-class");
        expect(rootDiv.children[2].className).toBe("my-test-class");
    })

});