mozilla-central/toolkit/components/pdfjs/test/browser_pdfjs_zoom.js (file symbol)

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Test Info: Warnings

/* Any copyright is dedicated to the Public Domain.
requestLongerTimeout(2);
const RELATIVE_DIR = "toolkit/components/pdfjs/test/";
const TESTROOT = "http://example.com/browser/" + RELATIVE_DIR;
const TESTS = [
{
action: {
selector: "#zoomInButton",
event: "click",
},
expectedZoom: 1, // 1 - zoom in
message: "Zoomed in using the '+' (zoom in) button",
},
{
action: {
selector: "#zoomOutButton",
event: "click",
},
expectedZoom: -1, // -1 - zoom out
message: "Zoomed out using the '-' (zoom out) button",
},
{
action: {
keyboard: true,
keyCode: 61,
event: "+",
},
expectedZoom: 1, // 1 - zoom in
message: "Zoomed in using the CTRL++ keys",
},
{
action: {
keyboard: true,
keyCode: 109,
event: "-",
},
expectedZoom: -1, // -1 - zoom out
message: "Zoomed out using the CTRL+- keys",
},
{
action: {
selector: "select#scaleSelect",
index: 5,
event: "change",
},
expectedZoom: -1, // -1 - zoom out
message: "Zoomed using the zoom picker",
},
];
add_task(async function test() {
let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
let handlerInfo = mimeService.getFromTypeAndExtension(
"application/pdf",
"pdf"
);
// Make sure pdf.js is the default handler.
is(
handlerInfo.alwaysAskBeforeHandling,
false,
"pdf handler defaults to always-ask is false"
);
is(
handlerInfo.preferredAction,
Ci.nsIHandlerInfo.handleInternally,
"pdf handler defaults to internal"
);
info("Pref action: " + handlerInfo.preferredAction);
await BrowserTestUtils.withNewTab(
{ gBrowser, url: "about:blank" },
async function (newTabBrowser) {
await waitForPdfJS(
newTabBrowser,
TESTROOT + "file_pdfjs_test.pdf#zoom=100"
);
await SpecialPowers.spawn(
newTabBrowser,
[TESTS],
async function (contentTESTS) {
let document = content.document;
function waitForRender() {
return new Promise(resolve => {
document.addEventListener(
"pagerendered",
function onPageRendered(e) {
if (e.detail.pageNumber !== 1) {
return;
}
document.removeEventListener(
"pagerendered",
onPageRendered,
true
);
resolve();
},
true
);
});
}
// check that PDF is opened with internal viewer
Assert.ok(
content.document.querySelector("div#viewer"),
"document content has viewer UI"
);
let initialWidth, previousWidth;
initialWidth = previousWidth = parseInt(
content.getComputedStyle(
content.document.querySelector("div.page[data-page-number='1']")
).width
);
for (let subTest of contentTESTS) {
// We zoom using an UI element
var ev;
if (subTest.action.selector) {
// Get the element and trigger the action for changing the zoom
var el = document.querySelector(subTest.action.selector);
Assert.ok(
el,
"Element '" + subTest.action.selector + "' has been found"
);
if (subTest.action.index) {
el.selectedIndex = subTest.action.index;
}
// Dispatch the event for changing the zoom
ev = new content.Event(subTest.action.event);
} else {
// We zoom using keyboard
// Simulate key press
ev = new content.KeyboardEvent("keydown", {
key: subTest.action.event,
keyCode: subTest.action.keyCode,
ctrlKey: true,
});
el = content;
}
el.dispatchEvent(ev);
await waitForRender();
var pageZoomScale =
content.document.querySelector("select#scaleSelect");
// The zoom value displayed in the zoom select
var zoomValue =
pageZoomScale.options[pageZoomScale.selectedIndex].innerHTML;
let pageContainer = content.document.querySelector(
"div.page[data-page-number='1']"
);
let actualWidth = parseInt(
content.getComputedStyle(pageContainer).width
);
// the actual zoom of the PDF document
let computedZoomValue =
parseInt((actualWidth / initialWidth).toFixed(2) * 100) + "%";
Assert.equal(
computedZoomValue,
zoomValue,
"Content has correct zoom"
);
// Check that document zooms in the expected way (in/out)
let zoom = (actualWidth - previousWidth) * subTest.expectedZoom;
Assert.ok(zoom > 0, subTest.message);
previousWidth = actualWidth;
}
}
);
await waitForPdfJSClose(newTabBrowser);
}
);
});
// Performs a SpecialPowers.spawn round-trip to ensure that any setup
// that needs to be done in the content process by any pending tasks has
// a chance to complete before continuing.
function waitForRoundTrip(browser) {
return SpecialPowers.spawn(browser, [], () => {});
}
async function waitForRenderAndGetWidth(newTabBrowser) {
return SpecialPowers.spawn(newTabBrowser, [], async function () {
function waitForRender(document) {
return new Promise(resolve => {
document.addEventListener(
"pagerendered",
function onPageRendered(e) {
if (e.detail.pageNumber !== 1) {
return;
}
document.removeEventListener("pagerendered", onPageRendered, true);
resolve();
},
true
);
});
}
// check that PDF is opened with internal viewer
Assert.ok(
content.document.querySelector("div#viewer"),
"document content has viewer UI"
);
await waitForRender(content.document);
return parseInt(
content.getComputedStyle(
content.document.querySelector("div.page[data-page-number='1']")
).width
);
});
}
add_task(async function test_browser_zoom() {
await BrowserTestUtils.withNewTab(
{ gBrowser, url: "about:blank" },
async function (newTabBrowser) {
const promise = waitForPdfJS(
newTabBrowser,
TESTROOT + "file_pdfjs_test.pdf"
);
await BrowserTestUtils.waitForContentEvent(
newTabBrowser,
"documentloaded",
false,
null,
true
);
const initialWidth = await waitForRenderAndGetWidth(newTabBrowser);
await promise;
// Zoom in
let newWidthPromise = waitForRenderAndGetWidth(newTabBrowser);
await waitForRoundTrip(newTabBrowser);
FullZoom.enlarge();
Assert.greater(
await newWidthPromise,
initialWidth,
"Zoom in makes the page bigger."
);
// Reset
newWidthPromise = waitForRenderAndGetWidth(newTabBrowser);
await waitForRoundTrip(newTabBrowser);
FullZoom.reset();
is(await newWidthPromise, initialWidth, "Zoom reset restores page.");
// Zoom out
newWidthPromise = waitForRenderAndGetWidth(newTabBrowser);
await waitForRoundTrip(newTabBrowser);
FullZoom.reduce();
Assert.less(
await newWidthPromise,
initialWidth,
"Zoom out makes the page smaller."
);
// Clean-up after the PDF viewer.
await waitForPdfJSClose(newTabBrowser);
}
);
});