gristlabs_grist-core/test/client/lib/localization.ts

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