1 files changed, 230 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_xpcomutils.js b/js/xpconnect/tests/unit/test_xpcomutils.js
new file mode 100644
index 0000000000..5d751a335d
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+++ b/js/xpconnect/tests/unit/test_xpcomutils.js
@@ -0,0 +1,230 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 4 -*-
+ * vim: sw=4 ts=4 sts=4 et
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * This file tests the methods on XPCOMUtils.jsm.
+ * Also on ComponentUtils.jsm. Which is deprecated.
+ */
+
+const {ComponentUtils} = ChromeUtils.import("resource://gre/modules/ComponentUtils.jsm");
+const {Preferences} = ChromeUtils.import("resource://gre/modules/Preferences.jsm");
+const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
+const {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
+
+////////////////////////////////////////////////////////////////////////////////
+//// Tests
+
+add_test(function test_generateQI_string_names()
+{
+    var x = {
+        QueryInterface: ChromeUtils.generateQI([
+            "nsIClassInfo",
+            "nsIObserver"
+        ])
+    };
+
+    try {
+        x.QueryInterface(Ci.nsIClassInfo);
+    } catch(e) {
+        do_throw("Should QI to nsIClassInfo");
+    }
+    try {
+        x.QueryInterface(Ci.nsIObserver);
+    } catch(e) {
+        do_throw("Should QI to nsIObserver");
+    }
+    try {
+        x.QueryInterface(Ci.nsIObserverService);
+        do_throw("QI should not have succeeded!");
+    } catch(e) {}
+    run_next_test();
+});
+
+add_test(function test_defineLazyGetter()
+{
+    let accessCount = 0;
+    let obj = {
+      inScope: false
+    };
+    const TEST_VALUE = "test value";
+    XPCOMUtils.defineLazyGetter(obj, "foo", function() {
+        accessCount++;
+        this.inScope = true;
+        return TEST_VALUE;
+    });
+    Assert.equal(accessCount, 0);
+
+    // Get the property, making sure the access count has increased.
+    Assert.equal(obj.foo, TEST_VALUE);
+    Assert.equal(accessCount, 1);
+    Assert.ok(obj.inScope);
+
+    // Get the property once more, making sure the access count has not
+    // increased.
+    Assert.equal(obj.foo, TEST_VALUE);
+    Assert.equal(accessCount, 1);
+    run_next_test();
+});
+
+
+add_test(function test_defineLazyServiceGetter()
+{
+    let obj = { };
+    XPCOMUtils.defineLazyServiceGetter(obj, "service",
+                                       "@mozilla.org/consoleservice;1",
+                                       "nsIConsoleService");
+    let service = Cc["@mozilla.org/consoleservice;1"].
+                  getService(Ci.nsIConsoleService);
+
+    // Check that the lazy service getter and the actual service have the same
+    // properties.
+    for (let prop in obj.service)
+        Assert.ok(prop in service);
+    for (let prop in service)
+        Assert.ok(prop in obj.service);
+    run_next_test();
+});
+
+
+add_test(function test_defineLazyPreferenceGetter()
+{
+    const PREF = "xpcomutils.test.pref";
+
+    let obj = {};
+    XPCOMUtils.defineLazyPreferenceGetter(obj, "pref", PREF, "defaultValue");
+
+
+    equal(obj.pref, "defaultValue", "Should return the default value before pref is set");
+
+    Preferences.set(PREF, "currentValue");
+
+
+    info("Create second getter on new object");
+
+    obj = {};
+    XPCOMUtils.defineLazyPreferenceGetter(obj, "pref", PREF, "defaultValue");
+
+
+    equal(obj.pref, "currentValue", "Should return the current value on initial read when pref is already set");
+
+    Preferences.set(PREF, "newValue");
+
+    equal(obj.pref, "newValue", "Should return new value after preference change");
+
+    Preferences.set(PREF, "currentValue");
+
+    equal(obj.pref, "currentValue", "Should return new value after second preference change");
+
+
+    Preferences.reset(PREF);
+
+    equal(obj.pref, "defaultValue", "Should return default value after pref is reset");
+
+    obj = {};
+    XPCOMUtils.defineLazyPreferenceGetter(obj, "pref", PREF, "a,b",
+                                          null, value => value.split(","));
+
+    deepEqual(obj.pref, ["a", "b"], "transform is applied to default value");
+
+    Preferences.set(PREF, "x,y,z");
+    deepEqual(obj.pref, ["x", "y", "z"], "transform is applied to updated value");
+
+    Preferences.reset(PREF);
+    deepEqual(obj.pref, ["a", "b"], "transform is applied to reset default");
+
+    run_next_test();
+});
+
+
+add_test(function test_categoryRegistration()
+{
+  const CATEGORY_NAME = "test-cat";
+  const XULAPPINFO_CONTRACTID = "@mozilla.org/xre/app-info;1";
+  const XULAPPINFO_CID = Components.ID("{fc937916-656b-4fb3-a395-8c63569e27a8}");
+
+  // Create a fake app entry for our category registration apps filter.
+  let tmp = {};
+  ChromeUtils.import("resource://testing-common/AppInfo.jsm", tmp);
+  let XULAppInfo = tmp.newAppInfo({
+    name: "catRegTest",
+    ID: "{adb42a9a-0d19-4849-bf4d-627614ca19be}",
+    version: "1",
+    platformVersion: "",
+  });
+  let XULAppInfoFactory = {
+    createInstance: function (outer, iid) {
+      if (outer != null)
+        throw Cr.NS_ERROR_NO_AGGREGATION;
+      return XULAppInfo.QueryInterface(iid);
+    }
+  };
+  let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
+  registrar.registerFactory(
+    XULAPPINFO_CID,
+    "XULAppInfo",
+    XULAPPINFO_CONTRACTID,
+    XULAppInfoFactory
+  );
+
+  // Load test components.
+  do_load_manifest("CatRegistrationComponents.manifest");
+
+  const EXPECTED_ENTRIES = new Map([
+    ["CatRegisteredComponent", "@unit.test.com/cat-registered-component;1"],
+    ["CatAppRegisteredComponent", "@unit.test.com/cat-app-registered-component;1"],
+  ]);
+
+  // Verify the correct entries are registered in the "test-cat" category.
+  for (let {entry, value} of Services.catMan.enumerateCategory(CATEGORY_NAME)) {
+    print("Verify that the name/value pair exists in the expected entries.");
+    ok(EXPECTED_ENTRIES.has(entry));
+    Assert.equal(EXPECTED_ENTRIES.get(entry), value);
+    EXPECTED_ENTRIES.delete(entry);
+  }
+  print("Check that all of the expected entries have been deleted.");
+  Assert.equal(EXPECTED_ENTRIES.size, 0);
+  run_next_test();
+});
+
+add_test(function test_generateSingletonFactory()
+{
+  const XPCCOMPONENT_CONTRACTID = "@mozilla.org/singletonComponentTest;1";
+  const XPCCOMPONENT_CID = Components.ID("{31031c36-5e29-4dd9-9045-333a5d719a3e}");
+
+  function XPCComponent() {}
+  XPCComponent.prototype = {
+    classID: XPCCOMPONENT_CID,
+    _xpcom_factory: ComponentUtils.generateSingletonFactory(XPCComponent),
+    QueryInterface: ChromeUtils.generateQI([])
+  };
+  let NSGetFactory = ComponentUtils.generateNSGetFactory([XPCComponent]);
+  let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
+  registrar.registerFactory(
+    XPCCOMPONENT_CID,
+    "XPCComponent",
+    XPCCOMPONENT_CONTRACTID,
+    NSGetFactory(XPCCOMPONENT_CID)
+  );
+
+  // First, try to instance the component.
+  let instance = Cc[XPCCOMPONENT_CONTRACTID].createInstance(Ci.nsISupports);
+  // Try again, check that it returns the same instance as before.
+  Assert.equal(instance,
+               Cc[XPCCOMPONENT_CONTRACTID].createInstance(Ci.nsISupports));
+  // Now, for sanity, check that getService is also returning the same instance.
+  Assert.equal(instance,
+               Cc[XPCCOMPONENT_CONTRACTID].getService(Ci.nsISupports));
+
+  run_next_test();
+});
+
+////////////////////////////////////////////////////////////////////////////////
+//// Test Runner
+
+function run_test()
+{
+  run_next_test();
+}