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import {makeT, t} from 'app/client/lib/localization';
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import {assert} from 'chai';
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import i18next, {i18n} from 'i18next';
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import {Disposable, dom, DomContents, observable} from "grainjs";
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import {popGlobals, pushGlobals, G} from 'grainjs/dist/cjs/lib/browserGlobals';
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import {JSDOM} from 'jsdom';
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describe('localization', function() {
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let instance: i18n;
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before(() => {
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instance = i18next.createInstance();
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instance.init({
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lng: 'en',
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resources: {
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en: {
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translation: {
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'Text': 'TranslatedText',
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'Argument': 'Translated {{arg1}} {{arg2}}{{end}}',
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'Argument_variant': 'Variant {{arg1}} {{arg2}}{{end}}',
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'Parent': {
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'Child': 'Translated child {{arg}}',
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}
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}
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}
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}
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});
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});
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beforeEach(function() {
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// These grainjs browserGlobals are needed for using dom() in tests.
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const jsdomDoc = new JSDOM("<!doctype html><html><body></body></html>");
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pushGlobals(jsdomDoc.window);
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});
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afterEach(function() {
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popGlobals();
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});
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it('supports basic operation for strings', function() {
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assert.equal(t('Argument', {arg1: '1', arg2: '2', end: '.'}, instance), 'Translated 1 2.');
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assert.equal(t('Argument', {arg1: '1', arg2: '2', end: '.', context: 'variant'}, instance), 'Variant 1 2.');
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assert.equal(t('Text', null, instance), 'TranslatedText');
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});
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it('supports dom content interpolation', function() {
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class Component extends Disposable {
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public buildDom() {
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return dom('span', '.');
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}
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}
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const obs = observable("Second");
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const result = t('Argument', {
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arg1: dom('span', 'First'),
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arg2: dom.domComputed(obs, (value) => dom('span', value)),
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end: dom.create(Component)
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}, instance) as any;
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assert.isTrue(Array.isArray(result));
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assert.equal(result.length, 5);
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// First we have a plain string.
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assert.equal(result[0], 'Translated ');
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// Next we have a span element.
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assert.equal(result[1]?.tagName, 'SPAN');
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assert.equal(result[1]?.textContent, 'First');
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// Empty space
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assert.equal(result[2], ' ');
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// Element 3 is the domComputed [Comment, Comment, function()]
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assert.isTrue(Array.isArray(result[3]));
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assert.isTrue(result[3][0] instanceof G.Node);
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assert.isTrue(result[3][1] instanceof G.Node);
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assert.isTrue(typeof result[3][2] === 'function');
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// As last we have "." as grainjs component.
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assert.isTrue(Array.isArray(result[4]));
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assert.isTrue(result[4][0] instanceof G.Node);
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assert.isTrue(result[4][1] instanceof G.Node);
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assert.isTrue(typeof result[4][2] === 'function');
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// Make sure that computed works.
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const span = dom('span', result);
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assert.equal(span.textContent, "Translated First Second.");
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obs.set("Third");
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assert.equal(span.textContent, "Translated First Third.");
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// Test that context variable works.
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const variantSpan = dom('span', t('Argument', {
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arg1: dom('span', 'First'),
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arg2: dom.domComputed(obs, (value) => dom('span', value)),
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end: dom.create(Component),
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context: 'variant'
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}, instance));
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assert.equal(variantSpan.textContent, "Variant First Third.");
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obs.set("Fourth");
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assert.equal(variantSpan.textContent, "Variant First Fourth.");
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});
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it('supports scoping through makeT', function() {
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const scoped = makeT('Parent');
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assert.equal(scoped('Child', { arg : 'Arg'}, instance), 'Translated child Arg');
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});
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it('infers result from parameters', function() {
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class Component extends Disposable {
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public buildDom() {
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return dom('span', '.');
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}
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}
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// Here we only test that this "compiles" without errors and types are correct.
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let typeString: string = ''; void typeString;
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typeString = t('Argument', {arg1: 'argument 1', arg2: 'argument 2'}, instance);
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typeString = t('Argument', {arg1: 1, arg2: true}, instance);
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typeString = t('Argument', undefined, instance);
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const scoped = makeT('Parent');
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typeString = scoped('Child', {arg: 'argument 1'}, instance);
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typeString = scoped('Child', {arg: 1}, instance);
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typeString = scoped('Child', undefined, instance);
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let domContent: DomContents = null; void domContent;
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domContent = t('Argument', {arg1: 'argument 1', arg2: dom('span')}, instance);
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domContent = t('Argument', {arg1: 1, arg2: dom.domComputed(observable('test'))}, instance);
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domContent = t('Argument', undefined, instance);
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domContent = scoped('Child', {arg: dom.create(Component)}, instance);
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domContent = scoped('Child', {arg: dom.maybe(observable(true), () => dom('span'))}, instance);
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});
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});
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Paul Fitzpatrick
2 years ago