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gaia/apps/system/test/unit/internet_sharing_test.js

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+'use strict';
+/* global InternetSharing */
+/* global MocksHelper */
+/* global MockNavigatorSettings */
+/* global Service */
+
+requireApp('system/shared/test/unit/mocks/mock_navigator_moz_settings.js');
+requireApp('system/test/unit/mock_modal_dialog.js');
+requireApp('system/js/service.js');
+requireApp('system/js/internet_sharing.js');
+
+var mocksForInternetSharing = new MocksHelper([
+  'ModalDialog'
+]).init();
+
+suite('internet sharing > ', function() {
+  // keys for settings
+  const KEY_WIFI_HOTSPOT = 'tethering.wifi.enabled';
+
+  var realSettings, subject;
+
+  suiteSetup(function() {
+    // Unfortunately, for asyncStorage scoping reasons, we can't simply
+    // use 'attachTestHelpers' anywhere in the internet sharing tests.
+    mocksForInternetSharing.suiteSetup();
+    // we need MockIccHelper properly set
+    mocksForInternetSharing.setup();
+
+    realSettings = navigator.mozSettings;
+    navigator.mozSettings = MockNavigatorSettings;
+    subject = new InternetSharing();
+    subject.start();
+  });
+
+  suiteTeardown(function() {
+    // we need MockIccHelper properly reset
+    mocksForInternetSharing.teardown();
+    mocksForInternetSharing.suiteTeardown();
+    navigator.mozSettings = realSettings;
+  });
+  // helper function for batch assertion of mozSettings
+  function assertSettingsEquals(testSet) {
+    var mSettings = MockNavigatorSettings.mSettings;
+    testSet.forEach(function(item) {
+      assert.equal(mSettings[item.key], item.result);
+    });
+  }
+
+  suite('wifi hotspot', function() {
+    test('can\'t turn on hotspot when APM is on', function() {
+      var testSet = [{'key': KEY_WIFI_HOTSPOT, 'result': false}];
+      this.sinon.stub(Service, 'query').returns(true);
+      subject.internetSharingSettingsChangeHanlder({
+        settingName: 'wifi',
+        settingValue: true
+      });
+      assertSettingsEquals(testSet);
+    });
+
+    test('can turn on hotspot when APM is off', function() {
+      var testSet = [{'key': KEY_WIFI_HOTSPOT, 'result': true}];
+      MockNavigatorSettings.mSettings[KEY_WIFI_HOTSPOT] = true;
+
+      this.sinon.stub(Service, 'query').returns(false);
+      subject.internetSharingSettingsChangeHanlder({
+        settingName: 'wifi',
+        settingValue: true
+      });
+      assertSettingsEquals(testSet);
+    });
+  });
+});