import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

browser/extensions/pdfjs/test/browser_pdfjs_zoom.js

@@ -0,0 +1,154 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+requestLongerTimeout(2);
+
+Components.utils.import("resource://gre/modules/Promise.jsm", this);
+
+const RELATIVE_DIR = "browser/extensions/pdfjs/test/";
+const TESTROOT = "http://example.com/browser/" + RELATIVE_DIR;
+
+const TESTS = [
+  {
+    action: {
+      selector: "button#zoomIn",
+      event: "click"
+    },
+    expectedZoom: 1, // 1 - zoom in
+    message: "Zoomed in using the '+' (zoom in) button"
+  },
+
+  {
+    action: {
+      selector: "button#zoomOut",
+      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(function* test() {
+  let handlerService = Cc["@mozilla.org/uriloader/handler-service;1"]
+                       .getService(Ci.nsIHandlerService);
+  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);
+
+  yield BrowserTestUtils.withNewTab({ gBrowser, url: "about:blank" },
+    function* (newTabBrowser) {
+      yield waitForPdfJS(newTabBrowser, TESTROOT + "file_pdfjs_test.pdf" + "#zoom=100");
+
+      yield ContentTask.spawn(newTabBrowser, TESTS, function* (TESTS) {
+        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");
+        Assert.ok("PDFJS" in content.wrappedJSObject, "window content has PDFJS object");
+
+        let initialWidth, previousWidth;
+        initialWidth = previousWidth =
+          parseInt(content.document.querySelector("div#pageContainer1").style.width);
+
+        for (let test of TESTS) {
+          // We zoom using an UI element
+          var ev;
+          if (test.action.selector) {
+            // Get the element and trigger the action for changing the zoom
+            var el = document.querySelector(test.action.selector);
+            Assert.ok(el, "Element '" + test.action.selector + "' has been found");
+
+            if (test.action.index){
+              el.selectedIndex = test.action.index;
+            }
+
+            // Dispatch the event for changing the zoom
+            ev = new Event(test.action.event);
+          }
+          // We zoom using keyboard
+          else {
+            // Simulate key press
+            ev = new content.KeyboardEvent("keydown",
+                                           { key: test.action.event,
+                                             keyCode: test.action.keyCode,
+                                             ctrlKey: true });
+            el = content;
+          }
+
+          el.dispatchEvent(ev);
+          yield 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#pageContainer1');
+          let actualWidth = parseInt(pageContainer.style.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) * test.expectedZoom;
+          Assert.ok(zoom > 0, test.message);
+
+          previousWidth = actualWidth;
+        }
+
+        var viewer = content.wrappedJSObject.PDFViewerApplication;
+        yield viewer.close();
+      });
+    });
+});