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template-factory-test.js
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template-factory-test.js
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import { ENV } from '@ember/-internals/environment';
import { RenderingTestCase, moduleFor } from 'internal-test-helpers';
import { template, templateCacheCounters } from '@ember/-internals/glimmer';
import { precompile, compile } from 'ember-template-compiler';
import { Component } from '../utils/helpers';
moduleFor(
'Template factory test',
class extends RenderingTestCase {
['@test the template factory returned from precompile is the same as compile'](assert) {
// snapshot counters
this.getCacheCounters();
let { owner } = this;
let templateStr = 'Hello {{this.name}}';
let options = { moduleName: 'my-app/templates/some-module.hbs' };
let spec = precompile(templateStr, options);
let body = `exports.default = template(${spec});`;
let module = new Function('exports', 'template', body);
let exports = {};
module(exports, template);
let Precompiled = exports['default'];
let Compiled = compile(templateStr, options);
assert.equal(typeof Precompiled, 'function', 'precompiled is a factory');
assert.equal(typeof Compiled, 'function', 'compiled is a factory');
this.expectCacheChanges({}, 'no changes');
let precompiled = Precompiled(owner);
this.expectCacheChanges(
{
templateCacheMisses: 1,
},
'misses 1'
);
let compiled = Compiled(owner);
this.expectCacheChanges(
{
templateCacheMisses: 1,
},
'misses 1'
);
assert.ok(typeof precompiled.spec !== 'string', 'Spec has been parsed');
assert.ok(typeof compiled.spec !== 'string', 'Spec has been parsed');
this.registerComponent('x-precompiled', {
ComponentClass: Component.extend({
layout: Precompiled,
}),
});
this.registerComponent('x-compiled', {
ComponentClass: Component.extend({
layout: Compiled,
}),
});
this.render('{{x-precompiled name="precompiled"}} {{x-compiled name="compiled"}}');
this.expectCacheChanges(
{
templateCacheHits: ENV._DEBUG_RENDER_TREE ? 5 : 2,
// from this.render
templateCacheMisses: 1,
},
'hits 2'
);
this.assertText('Hello precompiled Hello compiled');
}
getCacheCounters() {
return (this._counters = {
templateCacheHits: templateCacheCounters.cacheHit,
templateCacheMisses: templateCacheCounters.cacheMiss,
});
}
expectCacheChanges(expected, message) {
let lastState = this._counters;
let state = this.getCacheCounters();
let actual = diff(state, lastState);
this.assert.deepEqual(actual, expected, message);
}
}
);
function diff(state, lastState) {
let res = {};
Object.keys(state).forEach((key) => {
let delta = state[key] - lastState[key];
if (delta !== 0) {
res[key] = state[key] - lastState[key];
}
});
return res;
}