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/**
* @license
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import '../../../test/common-test-setup-karma';
import './gr-select';
import {html} from '@polymer/polymer/lib/utils/html-tag';
import {GrSelect} from './gr-select';
const basicFixture = fixtureFromTemplate(html`
<gr-select>
<select>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
</select>
</gr-select>
`);
const noOptionsFixture = fixtureFromTemplate(html`
<gr-select>
<select></select>
</gr-select>
`);
suite('gr-select tests', () => {
let element: GrSelect;
setup(() => {
element = basicFixture.instantiate() as GrSelect;
});
test('bindValue must be set to the first option value', () => {
assert.equal(element.bindValue, '1');
assert.equal(element.nativeSelect.value, '1');
});
test('value of 0 should still trigger value updates', () => {
element.bindValue = '0';
assert.equal(element.nativeSelect.value, '');
});
test('bidirectional binding property-to-attribute', () => {
const changeStub = sinon.stub();
element.addEventListener('bind-value-changed', changeStub);
// The selected element should be the first one by default.
assert.equal(element.nativeSelect.value, '1');
assert.equal(element.bindValue, '1');
assert.isFalse(changeStub.called);
// Now change the value.
element.bindValue = '2';
// It should be updated.
assert.equal(element.nativeSelect.value, '2');
assert.equal(element.bindValue, '2');
assert.isTrue(changeStub.called);
});
test('bidirectional binding attribute-to-property', () => {
const changeStub = sinon.stub();
element.addEventListener('bind-value-changed', changeStub);
// The selected element should be the first one by default.
assert.equal(element.nativeSelect.value, '1');
assert.equal(element.bindValue, '1');
assert.isFalse(changeStub.called);
// Now change the value.
element.nativeSelect.value = '3';
element.dispatchEvent(
new CustomEvent('change', {
composed: true,
bubbles: true,
})
);
// It should be updated.
assert.equal(element.nativeSelect.value, '3');
assert.equal(element.bindValue, '3');
assert.isTrue(changeStub.called);
});
suite('gr-select no options tests', () => {
let element: GrSelect;
setup(() => {
element = noOptionsFixture.instantiate() as GrSelect;
});
test('bindValue must not be changed', () => {
assert.isUndefined(element.bindValue);
});
});
});