import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

toolkit/content/tests/browser/browser_saveImageURL.js

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+"use strict";
+
+const IMAGE_PAGE = "https://example.com/browser/toolkit/content/tests/browser/image_page.html";
+const PREF_UNSAFE_FORBIDDEN = "dom.ipc.cpows.forbid-unsafe-from-browser";
+
+MockFilePicker.init(window);
+MockFilePicker.returnValue = MockFilePicker.returnCancel;
+
+registerCleanupFunction(function() {
+  MockFilePicker.cleanup();
+});
+
+function waitForFilePicker() {
+  return new Promise((resolve) => {
+    MockFilePicker.showCallback = () => {
+      MockFilePicker.showCallback = null;
+      ok(true, "Saw the file picker");
+      resolve();
+    }
+  })
+}
+
+/**
+ * Test that saveImageURL works when we pass in the aIsContentWindowPrivate
+ * argument instead of a document. This is the preferred API.
+ */
+add_task(function* preferred_API() {
+  yield BrowserTestUtils.withNewTab({
+    gBrowser,
+    url: IMAGE_PAGE,
+  }, function*(browser) {
+    let url = yield ContentTask.spawn(browser, null, function*() {
+      let image = content.document.getElementById("image");
+      return image.href;
+    });
+
+    saveImageURL(url, "image.jpg", null, true, false, null, null, null, null, false);
+    yield waitForFilePicker();
+  });
+});
+
+/**
+ * Test that saveImageURL will still work when passed a document instead
+ * of the aIsContentWindowPrivate argument. This is the deprecated API, and
+ * will not work in apps using remote browsers having PREF_UNSAFE_FORBIDDEN
+ * set to true.
+ */
+add_task(function* deprecated_API() {
+  yield BrowserTestUtils.withNewTab({
+    gBrowser,
+    url: IMAGE_PAGE,
+  }, function*(browser) {
+    yield pushPrefs([PREF_UNSAFE_FORBIDDEN, false]);
+
+    let url = yield ContentTask.spawn(browser, null, function*() {
+      let image = content.document.getElementById("image");
+      return image.href;
+    });
+
+    // Now get the document directly from content. If we run this test with
+    // e10s-enabled, this will be a CPOW, which is forbidden. We'll just
+    // pass the XUL document instead to test this interface.
+    let doc = document;
+
+    saveImageURL(url, "image.jpg", null, true, false, null, doc, null, null);
+    yield waitForFilePicker();
+  });
+});