1 files changed, 246 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_child_resource.js b/netwerk/test/browser/browser_child_resource.js
new file mode 100644
index 0000000000..341a8fc8e3
--- /dev/null
+++ b/netwerk/test/browser/browser_child_resource.js
@@ -0,0 +1,246 @@
+/*
+Any copyright is dedicated to the Public Domain.
+http://creativecommons.org/publicdomain/zero/1.0/
+*/
+"use strict";
+
+// This must be loaded in the remote process for this test to be useful
+const TEST_URL = "https://example.com/browser/netwerk/test/browser/dummy.html";
+
+const expectedRemote = gMultiProcessBrowser ? "true" : "";
+
+const resProtocol = Cc[
+  "@mozilla.org/network/protocol;1?name=resource"
+].getService(Ci.nsIResProtocolHandler);
+
+function waitForEvent(obj, name, capturing, chromeEvent) {
+  info("Waiting for " + name);
+  return new Promise(resolve => {
+    function listener(event) {
+      info("Saw " + name);
+      obj.removeEventListener(name, listener, capturing, chromeEvent);
+      resolve(event);
+    }
+
+    obj.addEventListener(name, listener, capturing, chromeEvent);
+  });
+}
+
+function resolveURI(uri) {
+  uri = Services.io.newURI(uri);
+  try {
+    return resProtocol.resolveURI(uri);
+  } catch (e) {
+    return null;
+  }
+}
+
+function remoteResolveURI(uri) {
+  return SpecialPowers.spawn(gBrowser.selectedBrowser, [uri], uriToResolve => {
+    let resProtocol = Cc[
+      "@mozilla.org/network/protocol;1?name=resource"
+    ].getService(Ci.nsIResProtocolHandler);
+
+    uriToResolve = Services.io.newURI(uriToResolve);
+    try {
+      return resProtocol.resolveURI(uriToResolve);
+    } catch (e) {}
+    return null;
+  });
+}
+
+// Restarts the child process by crashing it then reloading the tab
+var restart = async function () {
+  let browser = gBrowser.selectedBrowser;
+  // If the tab isn't remote this would crash the main process so skip it
+  if (browser.getAttribute("remote") != "true") {
+    return browser;
+  }
+
+  await BrowserTestUtils.crashFrame(browser);
+
+  browser.reload();
+
+  await BrowserTestUtils.browserLoaded(browser);
+  is(
+    browser.getAttribute("remote"),
+    expectedRemote,
+    "Browser should be in the right process"
+  );
+  return browser;
+};
+
+// Sanity check that this test is going to be useful
+add_task(async function () {
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);
+
+  // This must be loaded in the remote process for this test to be useful
+  is(
+    gBrowser.selectedBrowser.getAttribute("remote"),
+    expectedRemote,
+    "Browser should be in the right process"
+  );
+
+  let local = resolveURI("resource://gre/modules/AppConstants.jsm");
+  let remote = await remoteResolveURI(
+    "resource://gre/modules/AppConstants.jsm"
+  );
+  is(local, remote, "AppConstants.jsm should resolve in both processes");
+
+  gBrowser.removeCurrentTab();
+});
+
+// Add a mapping, update it then remove it
+add_task(async function () {
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);
+
+  info("Set");
+  resProtocol.setSubstitution(
+    "testing",
+    Services.io.newURI("chrome://global/content")
+  );
+  let local = resolveURI("resource://testing/test.js");
+  let remote = await remoteResolveURI("resource://testing/test.js");
+  is(
+    local,
+    "chrome://global/content/test.js",
+    "Should resolve in main process"
+  );
+  is(
+    remote,
+    "chrome://global/content/test.js",
+    "Should resolve in child process"
+  );
+
+  info("Change");
+  resProtocol.setSubstitution(
+    "testing",
+    Services.io.newURI("chrome://global/skin")
+  );
+  local = resolveURI("resource://testing/test.js");
+  remote = await remoteResolveURI("resource://testing/test.js");
+  is(local, "chrome://global/skin/test.js", "Should resolve in main process");
+  is(remote, "chrome://global/skin/test.js", "Should resolve in child process");
+
+  info("Clear");
+  resProtocol.setSubstitution("testing", null);
+  local = resolveURI("resource://testing/test.js");
+  remote = await remoteResolveURI("resource://testing/test.js");
+  is(local, null, "Shouldn't resolve in main process");
+  is(remote, null, "Shouldn't resolve in child process");
+
+  gBrowser.removeCurrentTab();
+});
+
+// Add a mapping, restart the child process then check it is still there
+add_task(async function () {
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);
+
+  info("Set");
+  resProtocol.setSubstitution(
+    "testing",
+    Services.io.newURI("chrome://global/content")
+  );
+  let local = resolveURI("resource://testing/test.js");
+  let remote = await remoteResolveURI("resource://testing/test.js");
+  is(
+    local,
+    "chrome://global/content/test.js",
+    "Should resolve in main process"
+  );
+  is(
+    remote,
+    "chrome://global/content/test.js",
+    "Should resolve in child process"
+  );
+
+  await restart();
+
+  local = resolveURI("resource://testing/test.js");
+  remote = await remoteResolveURI("resource://testing/test.js");
+  is(
+    local,
+    "chrome://global/content/test.js",
+    "Should resolve in main process"
+  );
+  is(
+    remote,
+    "chrome://global/content/test.js",
+    "Should resolve in child process"
+  );
+
+  info("Change");
+  resProtocol.setSubstitution(
+    "testing",
+    Services.io.newURI("chrome://global/skin")
+  );
+
+  await restart();
+
+  local = resolveURI("resource://testing/test.js");
+  remote = await remoteResolveURI("resource://testing/test.js");
+  is(local, "chrome://global/skin/test.js", "Should resolve in main process");
+  is(remote, "chrome://global/skin/test.js", "Should resolve in child process");
+
+  info("Clear");
+  resProtocol.setSubstitution("testing", null);
+
+  await restart();
+
+  local = resolveURI("resource://testing/test.js");
+  remote = await remoteResolveURI("resource://testing/test.js");
+  is(local, null, "Shouldn't resolve in main process");
+  is(remote, null, "Shouldn't resolve in child process");
+
+  gBrowser.removeCurrentTab();
+});
+
+// Adding a mapping to a resource URI should work
+add_task(async function () {
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);
+
+  info("Set");
+  resProtocol.setSubstitution(
+    "testing",
+    Services.io.newURI("chrome://global/content")
+  );
+  resProtocol.setSubstitution(
+    "testing2",
+    Services.io.newURI("resource://testing")
+  );
+  let local = resolveURI("resource://testing2/test.js");
+  let remote = await remoteResolveURI("resource://testing2/test.js");
+  is(
+    local,
+    "chrome://global/content/test.js",
+    "Should resolve in main process"
+  );
+  is(
+    remote,
+    "chrome://global/content/test.js",
+    "Should resolve in child process"
+  );
+
+  info("Clear");
+  resProtocol.setSubstitution("testing", null);
+  local = resolveURI("resource://testing2/test.js");
+  remote = await remoteResolveURI("resource://testing2/test.js");
+  is(
+    local,
+    "chrome://global/content/test.js",
+    "Should resolve in main process"
+  );
+  is(
+    remote,
+    "chrome://global/content/test.js",
+    "Should resolve in child process"
+  );
+
+  resProtocol.setSubstitution("testing2", null);
+  local = resolveURI("resource://testing2/test.js");
+  remote = await remoteResolveURI("resource://testing2/test.js");
+  is(local, null, "Shouldn't resolve in main process");
+  is(remote, null, "Shouldn't resolve in child process");
+
+  gBrowser.removeCurrentTab();
+});