vault/ui/tests/unit/utils/common-prefix-test.js
Jordan Reimer d4766766f2
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2022-10-18 09:46:02 -06:00

33 lines
1.5 KiB
JavaScript

import commonPrefix from 'core/utils/common-prefix';
import { module, test } from 'qunit';
module('Unit | Util | common prefix', function () {
test('it returns empty string if called with no args or an empty array', function (assert) {
let returned = commonPrefix();
assert.strictEqual(returned, '', 'returns an empty string');
returned = commonPrefix([]);
assert.strictEqual(returned, '', 'returns an empty string for an empty array');
});
test('it returns empty string if there are no common prefixes', function (assert) {
let secrets = ['asecret', 'secret2', 'secret3'].map((s) => ({ id: s }));
let returned = commonPrefix(secrets);
assert.strictEqual(returned, '', 'returns an empty string');
});
test('it returns the longest prefix', function (assert) {
let secrets = ['secret1', 'secret2', 'secret3'].map((s) => ({ id: s }));
let returned = commonPrefix(secrets);
assert.strictEqual(returned, 'secret', 'finds secret prefix');
let greetings = ['hello-there', 'hello-hi', 'hello-howdy'].map((s) => ({ id: s }));
returned = commonPrefix(greetings);
assert.strictEqual(returned, 'hello-', 'finds hello- prefix');
});
test('it can compare an attribute that is not "id" to calculate the longest prefix', function (assert) {
let secrets = ['secret1', 'secret2', 'secret3'].map((s) => ({ name: s }));
let returned = commonPrefix(secrets, 'name');
assert.strictEqual(returned, 'secret', 'finds secret prefix from name attribute');
});
});