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select2/tests/options/width-tests.js
Kevin Brown b5f136ff72
Add computedstyle option for calculating the width (#5559)
This allows for more accurate resolution of the width when compared
to the `resolve` method. This is more relevant for jQuery 1.x, where
the `resolve` method cannot find the width of a hidden select box,
but it also applies to newer versions of jQuery where the `width()`
method provided by jQuery doesn't fully match `getComputedStyle()`.

Fixes #3278
Fixes #5502
Closes #5259
2019-07-09 19:44:33 -04:00

85 lines
2.2 KiB
JavaScript

module('Options - Width');
var $ = require('jquery');
var Select2 = require('select2/core');
var select = new Select2($('<select></select>'));
test('string passed as width', function (assert) {
var $test = $('<select></select>');
var width = select._resolveWidth($test, '80%');
assert.equal(width, '80%');
});
test('width from style attribute', function (assert) {
var $test = $('<select style="width: 50%;"></selct>');
var width = select._resolveWidth($test, 'style');
assert.equal(width, '50%');
});
test('width from style returns null if nothing is found', function (assert) {
var $test = $('<select></selct>');
var width = select._resolveWidth($test, 'style');
assert.equal(width, null);
});
test('width from computed element width', function (assert) {
var $style = $(
'<style type="text/css">.css-set-width { width: 500px; }</style>'
);
var $test = $('<select class="css-set-width"></select>');
$('#qunit-fixture').append($style);
$('#qunit-fixture').append($test);
var width = select._resolveWidth($test, 'element');
assert.equal(width, '500px');
});
test('resolve gets the style if it is there', function (assert) {
var $test = $('<select style="width: 20%;"></selct>');
var width = select._resolveWidth($test, 'resolve');
assert.equal(width, '20%');
});
test('resolve falls back to element if there is no style', function (assert) {
var $style = $(
'<style type="text/css">.css-set-width { width: 500px; }</style>'
);
var $test = $('<select class="css-set-width"></select>');
$('#qunit-fixture').append($style);
$('#qunit-fixture').append($test);
var width = select._resolveWidth($test, 'resolve');
assert.equal(width, '500px');
});
test('computedstyle gets the style if parent is invisible', function (assert) {
var $style = $(
'<style type="text/css">.css-set-width { width: 500px; }</style>'
);
var $test = $(
'<div style="display:none;">' +
'<select class="css-set-width"></select>' +
'</div>'
);
$('#qunit-fixture').append($style);
$('#qunit-fixture').append($test);
var width = select._resolveWidth($test.find('select'), 'computedstyle');
assert.equal(width, '500px');
});