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pdf.js/test/unit/ui_utils_spec.js
Jonas Jenwald 0e1b5589e7 Restore the btoa/atob polyfills for Node.js 
These were removed in PR 9170, since they were unused in the browsers that we'll support in PDF.js version `2.0`.
However looking at the output of Travis, where a subset of the unit-tests are run using Node.js, there's warnings about `btoa` being undefined. This doesn't appear to cause any errors, which probably explains why we didn't notice this before (despite PR 9201).
2018-01-13 01:31:05 +01:00

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/* Copyright 2017 Mozilla Foundation
*
* 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 {
binarySearchFirstItem, EventBus, getPDFFileNameFromURL, isValidRotation,
waitOnEventOrTimeout, WaitOnType
} from '../../web/ui_utils';
import { createObjectURL } from '../../src/shared/util';
import isNodeJS from '../../src/shared/is_node';
describe('ui_utils', function() {
describe('binary search', function() {
function isTrue(boolean) {
return boolean;
}
function isGreater3(number) {
return number > 3;
}
it('empty array', function() {
expect(binarySearchFirstItem([], isTrue)).toEqual(0);
});
it('single boolean entry', function() {
expect(binarySearchFirstItem([false], isTrue)).toEqual(1);
expect(binarySearchFirstItem([true], isTrue)).toEqual(0);
});
it('three boolean entries', function() {
expect(binarySearchFirstItem([true, true, true], isTrue)).toEqual(0);
expect(binarySearchFirstItem([false, true, true], isTrue)).toEqual(1);
expect(binarySearchFirstItem([false, false, true], isTrue)).toEqual(2);
expect(binarySearchFirstItem([false, false, false], isTrue)).toEqual(3);
});
it('three numeric entries', function() {
expect(binarySearchFirstItem([0, 1, 2], isGreater3)).toEqual(3);
expect(binarySearchFirstItem([2, 3, 4], isGreater3)).toEqual(2);
expect(binarySearchFirstItem([4, 5, 6], isGreater3)).toEqual(0);
});
});
describe('getPDFFileNameFromURL', function() {
it('gets PDF filename', function() {
// Relative URL
expect(getPDFFileNameFromURL('/pdfs/file1.pdf')).toEqual('file1.pdf');
// Absolute URL
expect(getPDFFileNameFromURL(
'http://www.example.com/pdfs/file2.pdf')).toEqual('file2.pdf');
});
it('gets fallback filename', function() {
// Relative URL
expect(getPDFFileNameFromURL('/pdfs/file1.txt')).toEqual('document.pdf');
// Absolute URL
expect(getPDFFileNameFromURL(
'http://www.example.com/pdfs/file2.txt')).toEqual('document.pdf');
});
it('gets custom fallback filename', function() {
// Relative URL
expect(getPDFFileNameFromURL('/pdfs/file1.txt', 'qwerty1.pdf')).
toEqual('qwerty1.pdf');
// Absolute URL
expect(getPDFFileNameFromURL('http://www.example.com/pdfs/file2.txt',
'qwerty2.pdf')).toEqual('qwerty2.pdf');
// An empty string should be a valid custom fallback filename.
expect(getPDFFileNameFromURL('/pdfs/file3.txt', '')).toEqual('');
});
it('gets PDF filename from URL containing leading/trailing whitespace',
function() {
// Relative URL
expect(getPDFFileNameFromURL(
' /pdfs/file1.pdf ')).toEqual('file1.pdf');
// Absolute URL
expect(getPDFFileNameFromURL(
' http://www.example.com/pdfs/file2.pdf ')).toEqual('file2.pdf');
});
it('gets PDF filename from query string', function() {
// Relative URL
expect(getPDFFileNameFromURL(
'/pdfs/pdfs.html?name=file1.pdf')).toEqual('file1.pdf');
// Absolute URL
expect(getPDFFileNameFromURL(
'http://www.example.com/pdfs/pdf.html?file2.pdf')).toEqual('file2.pdf');
});
it('gets PDF filename from hash string', function() {
// Relative URL
expect(getPDFFileNameFromURL(
'/pdfs/pdfs.html#name=file1.pdf')).toEqual('file1.pdf');
// Absolute URL
expect(getPDFFileNameFromURL(
'http://www.example.com/pdfs/pdf.html#file2.pdf')).toEqual('file2.pdf');
});
it('gets correct PDF filename when multiple ones are present', function() {
// Relative URL
expect(getPDFFileNameFromURL(
'/pdfs/file1.pdf?name=file.pdf')).toEqual('file1.pdf');
// Absolute URL
expect(getPDFFileNameFromURL(
'http://www.example.com/pdfs/file2.pdf#file.pdf')).toEqual('file2.pdf');
});
it('gets PDF filename from URI-encoded data', function() {
var encodedUrl = encodeURIComponent(
'http://www.example.com/pdfs/file1.pdf');
expect(getPDFFileNameFromURL(encodedUrl)).toEqual('file1.pdf');
var encodedUrlWithQuery = encodeURIComponent(
'http://www.example.com/pdfs/file.txt?file2.pdf');
expect(getPDFFileNameFromURL(encodedUrlWithQuery)).toEqual('file2.pdf');
});
it('gets PDF filename from data mistaken for URI-encoded', function() {
expect(getPDFFileNameFromURL('/pdfs/%AA.pdf')).toEqual('%AA.pdf');
expect(getPDFFileNameFromURL('/pdfs/%2F.pdf')).toEqual('%2F.pdf');
});
it('gets PDF filename from (some) standard protocols', function() {
// HTTP
expect(getPDFFileNameFromURL('http://www.example.com/file1.pdf')).
toEqual('file1.pdf');
// HTTPS
expect(getPDFFileNameFromURL('https://www.example.com/file2.pdf')).
toEqual('file2.pdf');
// File
expect(getPDFFileNameFromURL('file:///path/to/files/file3.pdf')).
toEqual('file3.pdf');
// FTP
expect(getPDFFileNameFromURL('ftp://www.example.com/file4.pdf')).
toEqual('file4.pdf');
});
it('gets PDF filename from query string appended to "blob:" URL',
function() {
if (isNodeJS()) {
pending('Blob in not supported in Node.js.');
}
var typedArray = new Uint8Array([1, 2, 3, 4, 5]);
var blobUrl = createObjectURL(typedArray, 'application/pdf');
// Sanity check to ensure that a "blob:" URL was returned.
expect(blobUrl.indexOf('blob:') === 0).toEqual(true);
expect(getPDFFileNameFromURL(blobUrl + '?file.pdf')).toEqual('file.pdf');
});
it('gets fallback filename from query string appended to "data:" URL',
function() {
var typedArray = new Uint8Array([1, 2, 3, 4, 5]);
var dataUrl = createObjectURL(typedArray, 'application/pdf',
/* forceDataSchema = */ true);
// Sanity check to ensure that a "data:" URL was returned.
expect(dataUrl.indexOf('data:') === 0).toEqual(true);
expect(getPDFFileNameFromURL(dataUrl + '?file1.pdf')).
toEqual('document.pdf');
// Should correctly detect a "data:" URL with leading whitespace.
expect(getPDFFileNameFromURL(' ' + dataUrl + '?file2.pdf')).
toEqual('document.pdf');
});
});
describe('EventBus', function () {
it('dispatch event', function () {
var eventBus = new EventBus();
var count = 0;
eventBus.on('test', function () {
count++;
});
eventBus.dispatch('test');
expect(count).toEqual(1);
});
it('dispatch different event', function () {
var eventBus = new EventBus();
var count = 0;
eventBus.on('test', function () {
count++;
});
eventBus.dispatch('nottest');
expect(count).toEqual(0);
});
it('dispatch event multiple times', function () {
var eventBus = new EventBus();
var count = 0;
eventBus.dispatch('test');
eventBus.on('test', function () {
count++;
});
eventBus.dispatch('test');
eventBus.dispatch('test');
expect(count).toEqual(2);
});
it('dispatch event to multiple handlers', function () {
var eventBus = new EventBus();
var count = 0;
eventBus.on('test', function () {
count++;
});
eventBus.on('test', function () {
count++;
});
eventBus.dispatch('test');
expect(count).toEqual(2);
});
it('dispatch to detached', function () {
var eventBus = new EventBus();
var count = 0;
var listener = function () {
count++;
};
eventBus.on('test', listener);
eventBus.dispatch('test');
eventBus.off('test', listener);
eventBus.dispatch('test');
expect(count).toEqual(1);
});
it('dispatch to wrong detached', function () {
var eventBus = new EventBus();
var count = 0;
eventBus.on('test', function () {
count++;
});
eventBus.dispatch('test');
eventBus.off('test', function () {
count++;
});
eventBus.dispatch('test');
expect(count).toEqual(2);
});
it('dispatch to detached during handling', function () {
var eventBus = new EventBus();
var count = 0;
var listener1 = function () {
eventBus.off('test', listener2);
count++;
};
var listener2 = function () {
eventBus.off('test', listener1);
count++;
};
eventBus.on('test', listener1);
eventBus.on('test', listener2);
eventBus.dispatch('test');
eventBus.dispatch('test');
expect(count).toEqual(2);
});
});
describe('isValidRotation', function() {
it('should reject non-integer angles', function() {
expect(isValidRotation()).toEqual(false);
expect(isValidRotation(null)).toEqual(false);
expect(isValidRotation(NaN)).toEqual(false);
expect(isValidRotation([90])).toEqual(false);
expect(isValidRotation('90')).toEqual(false);
expect(isValidRotation(90.5)).toEqual(false);
});
it('should reject non-multiple of 90 degree angles', function() {
expect(isValidRotation(45)).toEqual(false);
expect(isValidRotation(-123)).toEqual(false);
});
it('should accept valid angles', function() {
expect(isValidRotation(0)).toEqual(true);
expect(isValidRotation(90)).toEqual(true);
expect(isValidRotation(-270)).toEqual(true);
expect(isValidRotation(540)).toEqual(true);
});
});
describe('waitOnEventOrTimeout', function() {
let eventBus;
beforeAll(function(done) {
eventBus = new EventBus();
done();
});
afterAll(function() {
eventBus = null;
});
it('should reject invalid parameters', function(done) {
let invalidTarget = waitOnEventOrTimeout({
target: 'window',
name: 'DOMContentLoaded',
}).then(function() {
throw new Error('Should reject invalid parameters.');
}, function(reason) {
expect(reason instanceof Error).toEqual(true);
});
let invalidName = waitOnEventOrTimeout({
target: eventBus,
name: '',
}).then(function() {
throw new Error('Should reject invalid parameters.');
}, function(reason) {
expect(reason instanceof Error).toEqual(true);
});
let invalidDelay = waitOnEventOrTimeout({
target: eventBus,
name: 'pagerendered',
delay: -1000,
}).then(function() {
throw new Error('Should reject invalid parameters.');
}, function(reason) {
expect(reason instanceof Error).toEqual(true);
});
Promise.all([invalidTarget, invalidName, invalidDelay]).then(done,
done.fail);
});
it('should resolve on event, using the DOM', function(done) {
if (isNodeJS()) {
pending('Document in not supported in Node.js.');
}
let button = document.createElement('button');
let buttonClicked = waitOnEventOrTimeout({
target: button,
name: 'click',
delay: 10000,
});
// Immediately dispatch the expected event.
button.click();
buttonClicked.then(function(type) {
expect(type).toEqual(WaitOnType.EVENT);
done();
}, done.fail);
});
it('should resolve on timeout, using the DOM', function(done) {
if (isNodeJS()) {
pending('Document in not supported in Node.js.');
}
let button = document.createElement('button');
let buttonClicked = waitOnEventOrTimeout({
target: button,
name: 'click',
delay: 10,
});
// Do *not* dispatch the event, and wait for the timeout.
buttonClicked.then(function(type) {
expect(type).toEqual(WaitOnType.TIMEOUT);
done();
}, done.fail);
});
it('should resolve on event, using the EventBus', function(done) {
let pageRendered = waitOnEventOrTimeout({
target: eventBus,
name: 'pagerendered',
delay: 10000,
});
// Immediately dispatch the expected event.
eventBus.dispatch('pagerendered');
pageRendered.then(function(type) {
expect(type).toEqual(WaitOnType.EVENT);
done();
}, done.fail);
});
it('should resolve on timeout, using the EventBus', function(done) {
let pageRendered = waitOnEventOrTimeout({
target: eventBus,
name: 'pagerendered',
delay: 10,
});
// Do *not* dispatch the event, and wait for the timeout.
pageRendered.then(function(type) {
expect(type).toEqual(WaitOnType.TIMEOUT);
done();
}, done.fail);
});
});
});
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