blob: 4bb63ea8906d6fdedb317190b7160a6adbe67c3d [file] [log] [blame]
/**
* @license
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import '../../../test/common-test-setup';
import './gr-select';
import {fixture, html, assert} from '@open-wc/testing';
import {GrSelect} from './gr-select';
suite('gr-select tests', () => {
let element: GrSelect;
setup(async () => {
element = await fixture<GrSelect>(html`
<gr-select>
<select>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
</select>
</gr-select>
`);
});
test('render', () => {
assert.shadowDom.equal(element, /* HTML */ '<slot></slot>');
});
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(async () => {
element = await fixture<GrSelect>(html`
<gr-select>
<select></select>
</gr-select>
`);
});
test('bindValue must not be changed', () => {
assert.isUndefined(element.bindValue);
});
});
});