@ribajs/core
Version:
Core module of Riba.js
144 lines • 13.3 kB
JavaScript
import { Riba } from "../riba.js";
import { IfBinder } from "./if.binder.js";
import { EachStarBinder } from "../binders/index.js";
import { dotAdapter } from "../adapters/dot.adapter.js";
describe("if", () => {
const riba = new Riba();
riba.module.adapter.register(dotAdapter);
riba.module.binder.register(IfBinder);
let el;
let model;
let fragment;
beforeEach(() => {
fragment = document.createDocumentFragment();
el = document.createElement("div");
el.setAttribute("rv-if", "data.show");
el.innerHTML = "{ data.count }";
fragment.appendChild(el);
model = {
data: {
show: true,
count: 1,
},
};
});
it("shows element with bound key inside if the value is true", () => {
riba.bind(fragment, model);
expect(fragment.childNodes).toHaveLength(2);
expect(fragment.childNodes[1].innerHTML).toEqual("1");
});
it("hides if the value is false", () => {
riba.bind(fragment, model);
model.data.show = false;
expect(fragment.childNodes.length).toEqual(1);
});
it("keeps binding when element becomes visible again", () => {
riba.bind(fragment, model);
model.data.show = false;
model.data.count = 2;
model.data.show = true;
expect(fragment.childNodes).toHaveLength(2);
expect(fragment.childNodes[1].innerHTML).toEqual("2");
});
it("hides if the value is falsey - zero", () => {
riba.bind(fragment, model);
model.data.show = 0;
expect(fragment.childNodes.length).toEqual(1);
});
it("hides if the value is falsey - empty string", () => {
riba.bind(fragment, model);
model.data.show = "";
expect(fragment.childNodes.length).toEqual(1);
});
it("hides if the value is falsey - undefined", () => {
riba.bind(fragment, model);
model.data.show = undefined;
expect(fragment.childNodes.length).toEqual(1);
});
it("rebindes nested if", () => {
const nestedEl = document.createElement("div");
nestedEl.setAttribute("rv-if", "data.showNested");
nestedEl.innerHTML = "{ data.countNested }";
el.appendChild(nestedEl);
riba.bind(fragment, model);
model.data.countNested = "1";
model.data.showNested = true;
expect(nestedEl.innerHTML).toEqual("1");
model.data.show = false;
model.data.show = true;
model.data.countNested = "42";
expect(nestedEl.innerHTML).toEqual("42");
});
it("respects nested if state after rebind", () => {
const nestedEl = document.createElement("div");
nestedEl.setAttribute("rv-if", "data.showNested");
el.appendChild(nestedEl);
riba.bind(fragment, model);
model.data.showNested = true;
expect(el.contains(nestedEl)).toBeTruthy();
model.data.show = false;
model.data.showNested = false;
model.data.show = true;
expect(el.contains(nestedEl)).toBeFalsy();
});
it("does not throw when root scope is reset", () => {
el.setAttribute("rv-if", "scope.error.errors");
el.innerHTML = "<div>{scope.error.errors.email}</div>";
model = {
scope: {
error: {
errors: {
email: "not a valid address",
},
},
},
};
const resetRootScope = jest.fn(() => {
model.scope.error = {};
return;
});
riba.bind(el, model);
resetRootScope();
expect(resetRootScope).toHaveReturned();
});
});
describe("Array observe and unobserve", () => {
const riba = new Riba();
riba.module.binder.register(EachStarBinder);
let fragment;
let el1;
let elEach;
let el2;
let el3;
let model;
beforeEach(() => {
fragment = document.createDocumentFragment();
el1 = document.createElement("div");
el1.setAttribute("rv-if", "scope.visible");
el2 = document.createElement("div");
elEach = document.createElement("div");
elEach.setAttribute("rv-each-item", "scope.items");
elEach.innerHTML = "{item.data}";
el2.appendChild(elEach);
el1.appendChild(el2);
el3 = document.createElement("div");
elEach = document.createElement("div");
elEach.setAttribute("rv-each-item", "scope.items");
elEach.innerHTML = "{item.data}";
el3.appendChild(elEach);
fragment.appendChild(el1);
fragment.appendChild(el3);
model = { scope: { items: [], visible: true } };
});
it("observes array changes after another array binding is unbound", () => {
riba.bind(fragment, model);
model.scope.items.push({ data: "data" });
expect(el3.childNodes.length).toEqual(2);
model.scope.items.push({ data: "data" });
expect(el3.childNodes.length).toEqual(3);
model.scope.visible = false;
model.scope.items.push({ data: "data" });
expect(el3.childNodes.length).toEqual(4);
});
});
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