all repos — h3 @ 81a9f748508237430b413be387d6dd51a7655681

A tiny, extremely minimalist JavaScript microframework.

__tests__/router.js

 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 
const mod = require("../h3.js");
const h3 = mod.h3;
const h = mod.h;

let preStartCalled = false;
let postStartCalled = false;
let count = 0;
let result = 0;

const setCount = () => {
    count = count + 2;
    h3.dispatch("count/set", count);
};
let hash = "#/c2";
const mockLocation = {
    get hash() {
        return hash;
    },
    set hash(value) {
        const event = new CustomEvent("hashchange");
        event.oldURL = hash;
        event.newURL = value;
        hash = value;
        window.dispatchEvent(event);
    },
};
const C1 = () => {
    const parts = h3.route.parts;
    const content = Object.keys(parts).map((key) =>
        h("li", `${key}: ${parts[key]}`)
    );
    return h("ul.c1", content);
};

const C2 = () => {
    const params = h3.route.params;
    const content = Object.keys(params).map((key) =>
        h("li", `${key}: ${params[key]}`)
    );
    return h("ul.c2", content);
};

describe("h3 (Router)", () => {
    beforeEach(async () => {
        const preStart = () => (preStartCalled = true);
        const postStart = () => (postStartCalled = true);
        await h3.init({
            routes: {
                "/c1/:a/:b/:c": C1,
                "/c2": C2,
            },
            location: mockLocation,
            preStart: preStart,
            postStart: postStart,
        });
    });

    it("should support routing configuration at startup", () => {
        expect(h3.route.def).toEqual("/c2");
    });

    it("should support pre/post start hooks", () => {
        expect(preStartCalled).toEqual(true);
        expect(postStartCalled).toEqual(true);
    });

    it("should support the capturing of parts within the current route", (done) => {
        const sub = h3.on("$redraw", () => {
            expect(
                document.body.childNodes[0].childNodes[1].textContent
            ).toEqual("b: 2");
            sub();
            done();
        });
        mockLocation.hash = "#/c1/1/2/3";
    });

    it("should expose a navigateTo method to navigate to another path", (done) => {
        const sub = h3.on("$redraw", () => {
            expect(
                document.body.childNodes[0].childNodes[1].textContent
            ).toEqual("test2: 2");
            sub();
            done();
        });
        h3.navigateTo("/c2", { test1: 1, test2: 2 });
    });

    it("should throw an error if no route matches", async () => {
        try {
            await h3.init({
                element: document.body,
                routes: {
                    "/c1/:a/:b/:c": () => h("div"),
                    "/c2": () => h("div"),
                },
            });
        } catch (e) {
            expect(e.message).toMatch(/No route matches/);
        }
    });

    it("should execute setup and teardown methods", (done) => {
        let redraws = 0;
        C1.setup = (cstate) => {
            cstate.result = cstate.result || 0;
            cstate.sub = h3.on("count/set", (state, count) => {
                cstate.result = count * count;
            });
        };
        C1.teardown = (cstate) => {
            cstate.sub();
            result = cstate.result;
            return { result: cstate.result };
        };
        const sub = h3.on("$redraw", () => {
            redraws++;
            setCount();
            setCount();
            if (redraws === 1) {
                expect(count).toEqual(4);
                expect(result).toEqual(0);
                h3.navigateTo("/c2");
            }
            if (redraws === 2) {
                expect(count).toEqual(8);
                expect(result).toEqual(16);
                delete C1.setup;
                delete C1.teardown;
                sub();
                done();
            }
        });
        h3.navigateTo("/c1/a/b/c");
    });
});