Add m-esr52 at 52.6.0

1 files changed, 1486 insertions, 0 deletions

diff --git a/dom/wifi/test/marionette/head.js b/dom/wifi/test/marionette/head.js
new file mode 100644
index 000000000..f4a212b11
--- /dev/null
+++ b/dom/wifi/test/marionette/head.js
@@ -0,0 +1,1486 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Emulate Promise.jsm semantics.
+Promise.defer = function() { return new Deferred(); }
+function Deferred()  {
+  this.promise = new Promise(function(resolve, reject) {
+    this.resolve = resolve;
+    this.reject = reject;
+  }.bind(this));
+  Object.freeze(this);
+}
+
+const STOCK_HOSTAPD_NAME = 'goldfish-hostapd';
+const HOSTAPD_CONFIG_PATH = '/data/misc/wifi/remote-hostapd/';
+
+const SETTINGS_RIL_DATA_ENABLED = 'ril.data.enabled';
+const SETTINGS_TETHERING_WIFI_ENABLED = 'tethering.wifi.enabled';
+const SETTINGS_TETHERING_WIFI_IP = 'tethering.wifi.ip';
+const SETTINGS_TETHERING_WIFI_SECURITY = 'tethering.wifi.security.type';
+
+const HOSTAPD_COMMON_CONFIG = {
+  driver: 'test',
+  ctrl_interface: '/data/misc/wifi/remote-hostapd',
+  test_socket: 'DIR:/data/misc/wifi/sockets',
+  hw_mode: 'b',
+  channel: '2',
+};
+
+const HOSTAPD_CONFIG_LIST = [
+  { ssid: 'ap0' },
+
+  { ssid: 'ap1',
+    wpa: 1,
+    wpa_pairwise: 'TKIP CCMP',
+    wpa_passphrase: '12345678'
+  },
+
+  { ssid: 'ap2',
+    wpa: 2,
+    rsn_pairwise: 'CCMP',
+    wpa_passphrase: '12345678',
+  },
+];
+
+var gTestSuite = (function() {
+  let suite = {};
+
+  // Private member variables of the returned object |suite|.
+  let wifiManager;
+  let wifiOrigEnabled;
+  let pendingEmulatorShellCount = 0;
+  let sdkVersion;
+
+  /**
+   * A wrapper function of "is".
+   *
+   * Calls the marionette function "is" as well as throws an exception
+   * if the givens values are not equal.
+   *
+   * @param value1
+   *        Any type of value to compare.
+   *
+   * @param value2
+   *        Any type of value to compare.
+   *
+   * @param message
+   *        Debug message for this check.
+   *
+   */
+  function isOrThrow(value1, value2, message) {
+    is(value1, value2, message);
+    if (value1 !== value2) {
+      throw message;
+    }
+  }
+
+  /**
+   * Send emulator shell command with safe guard.
+   *
+   * We should only call |finish()| after all emulator command transactions
+   * end, so here comes with the pending counter.  Resolve when the emulator
+   * gives positive response, and reject otherwise.
+   *
+   * Fulfill params:
+   *   result -- an array of emulator response lines.
+   * Reject params:
+   *   result -- an array of emulator response lines.
+   *
+   * @param aCommand
+   *        A string command to be passed to emulator through its telnet console.
+   *
+   * @return A deferred promise.
+   */
+  function runEmulatorShellSafe(aCommand) {
+    let deferred = Promise.defer();
+
+    ++pendingEmulatorShellCount;
+    runEmulatorShell(aCommand, function(aResult) {
+      --pendingEmulatorShellCount;
+
+      ok(true, "Emulator shell response: " + JSON.stringify(aResult));
+      if (Array.isArray(aResult)) {
+        deferred.resolve(aResult);
+      } else {
+        deferred.reject(aResult);
+      }
+    });
+
+    return deferred.promise;
+  }
+
+  /**
+   * Wait for one named MozWifiManager event.
+   *
+   * Resolve if that named event occurs.  Never reject.
+   *
+   * Fulfill params: the DOMEvent passed.
+   *
+   * @param aEventName
+   *        A string event name.
+   *
+   * @return A deferred promise.
+   */
+  function waitForWifiManagerEventOnce(aEventName) {
+    let deferred = Promise.defer();
+
+    wifiManager.addEventListener(aEventName, function onevent(aEvent) {
+      wifiManager.removeEventListener(aEventName, onevent);
+
+      ok(true, "WifiManager event '" + aEventName + "' got.");
+      deferred.resolve(aEvent);
+    });
+
+    return deferred.promise;
+  }
+
+  /**
+   * Wait for one named MozMobileConnection event.
+   *
+   * Resolve if that named event occurs.  Never reject.
+   *
+   * Fulfill params: the DOMEvent passed.
+   *
+   * @param aEventName
+   *        A string event name.
+   *
+   * @return A deferred promise.
+   */
+  function waitForMobileConnectionEventOnce(aEventName, aServiceId) {
+    aServiceId = aServiceId || 0;
+
+    let deferred = Promise.defer();
+    let mobileconnection = navigator.mozMobileConnections[aServiceId];
+
+    mobileconnection.addEventListener(aEventName, function onevent(aEvent) {
+      mobileconnection.removeEventListener(aEventName, onevent);
+
+      ok(true, "Mobile connection event '" + aEventName + "' got.");
+      deferred.resolve(aEvent);
+    });
+
+    return deferred.promise;
+  }
+
+  /**
+   * Get the detail of currently running processes containing the given name.
+   *
+   * Use shell command 'ps' to get the desired process's detail. Never reject.
+   *
+   * Fulfill params:
+   *   result -- an array of { pname, pid }
+   *
+   * @param aProcessName
+   *        The process to get the detail.
+   *
+   * @return A deferred promise.
+   */
+  function getProcessDetail(aProcessName) {
+    return runEmulatorShellSafe(['ps'])
+      .then(processes => {
+        // Sample 'ps' output:
+        //
+        // USER     PID   PPID  VSIZE  RSS     WCHAN    PC         NAME
+        // root      1     0     284    204   c009e6c4 0000deb4 S /init
+        // root      2     0     0      0     c0052c64 00000000 S kthreadd
+        // root      3     2     0      0     c0044978 00000000 S ksoftirqd/0
+        //
+        let detail = [];
+
+        processes.shift(); // Skip the first line.
+        for (let i = 0; i < processes.length; i++) {
+          let tokens = processes[i].split(/\s+/);
+          let pname = tokens[tokens.length - 1];
+          let pid = tokens[1];
+          if (-1 !== pname.indexOf(aProcessName)) {
+            detail.push({ pname: pname, pid: pid });
+          }
+        }
+
+        return detail;
+      });
+  }
+
+  /**
+   * Add required permissions for wifi testing. Never reject.
+   *
+   * The permissions required for wifi testing are 'wifi-manage' and 'settings-write'.
+   * Never reject.
+   *
+   * Fulfill params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function addRequiredPermissions() {
+    let deferred = Promise.defer();
+
+    let permissions = [{ 'type': 'wifi-manage', 'allow': 1, 'context': window.document },
+                       { 'type': 'settings-write', 'allow': 1, 'context': window.document },
+                       { 'type': 'settings-read', 'allow': 1, 'context': window.document },
+                       { 'type': 'settings-api-write', 'allow': 1, 'context': window.document },
+                       { 'type': 'settings-api-read', 'allow': 1, 'context': window.document },
+                       { 'type': 'mobileconnection', 'allow': 1, 'context': window.document }];
+
+    SpecialPowers.pushPermissions(permissions, function() {
+      deferred.resolve();
+    });
+
+    return deferred.promise;
+  }
+
+  /**
+   * Wrap DOMRequest onsuccess/onerror events to Promise resolve/reject.
+   *
+   * Fulfill params: A DOMEvent.
+   * Reject params: A DOMEvent.
+   *
+   * @param aRequest
+   *        A DOMRequest instance.
+   *
+   * @return A deferred promise.
+   */
+  function wrapDomRequestAsPromise(aRequest) {
+    let deferred = Promise.defer();
+
+    ok(aRequest instanceof DOMRequest,
+       "aRequest is instanceof " + aRequest.constructor);
+
+    aRequest.addEventListener("success", function(aEvent) {
+      deferred.resolve(aEvent);
+    });
+    aRequest.addEventListener("error", function(aEvent) {
+      deferred.reject(aEvent);
+    });
+
+    return deferred.promise;
+  }
+
+  /**
+   * Ensure wifi is enabled/disabled.
+   *
+   * Issue a wifi enable/disable request if wifi is not in the desired state;
+   * return a resolved promise otherwise. Note that you cannot rely on this
+   * function to test the correctness of enabling/disabling wifi.
+   * (use requestWifiEnabled instead)
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return a resolved promise or deferred promise.
+   */
+  function ensureWifiEnabled(aEnabled, useAPI) {
+    if (wifiManager.enabled === aEnabled) {
+      log('Already ' + (aEnabled ? 'enabled' : 'disabled'));
+      return Promise.resolve();
+    }
+    return requestWifiEnabled(aEnabled, useAPI);
+  }
+
+  /**
+   * Issue a request to enable/disable wifi.
+   *
+   * This function will attempt to enable/disable wifi, by calling API or by
+   * writing settings 'wifi.enabled' regardless of the wifi state, based on the
+   * value of |userAPI| parameter.
+   * Default is using settings.
+   *
+   * Note there's a limitation of co-existance of both method, per bug 930355,
+   * that once enable/disable wifi by API, the settings method won't work until
+   * reboot. So the test of wifi enable API should be executed last.
+   * TODO: Remove settings method after enable/disable wifi by settings is
+   *       removed after bug 1050147.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function requestWifiEnabled(aEnabled, useAPI) {
+    return Promise.all([
+      waitForWifiManagerEventOnce(aEnabled ? 'enabled' : 'disabled'),
+      useAPI ?
+        wrapDomRequestAsPromise(wifiManager.setWifiEnabled(aEnabled)) :
+        setSettings({ 'wifi.enabled': aEnabled }),
+    ]);
+  }
+
+  /**
+   * Wait for RIL data being connected.
+   *
+   * This function will check |MozMobileConnection.data.connected| on
+   * every 'datachange' event. Resolve when |MozMobileConnection.data.connected|
+   * becomes the expected state. Never reject.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aConnected
+   *        Boolean that indicates the desired data state.
+   *
+   * @param aServiceId [optional]
+   *        A numeric DSDS service id. Default: 0.
+   *
+   * @return A deferred promise.
+   */
+  function waitForRilDataConnected(aConnected, aServiceId) {
+    aServiceId = aServiceId || 0;
+    return waitForMobileConnectionEventOnce('datachange', aServiceId)
+      .then(function () {
+        let mobileconnection = navigator.mozMobileConnections[aServiceId];
+        if (mobileconnection.data.connected !== aConnected) {
+          return waitForRilDataConnected(aConnected, aServiceId);
+        }
+      });
+  }
+
+  /**
+   * Request to enable/disable wifi tethering.
+   *
+   * Enable/disable wifi tethering by changing the settings value 'tethering.wifi.enabled'.
+   * Resolve when the routing is verified to set up successfully in 20 seconds. The polling
+   * period is 1 second.
+   *
+   * Fulfill params: (none)
+   * Reject params: The error message.
+   *
+   * @param aEnabled
+   *        Boolean that indicates to enable or disable wifi tethering.
+   *
+   * @return A deferred promise.
+   */
+  function requestTetheringEnabled(aEnabled) {
+    let RETRY_INTERVAL_MS = 1000;
+    let retryCnt = 20;
+
+    return setSettings1(SETTINGS_TETHERING_WIFI_ENABLED, aEnabled)
+      .then(function waitForRoutingVerified() {
+        return verifyTetheringRouting(aEnabled)
+          .then(null, function onreject(aReason) {
+
+            log('verifyTetheringRouting rejected due to ' + aReason +
+                ' (' + retryCnt + ')');
+
+            if (!retryCnt--) {
+              throw aReason;
+            }
+
+            return waitForTimeout(RETRY_INTERVAL_MS).then(waitForRoutingVerified);
+          });
+      });
+  }
+
+  /**
+   * Forget the given network.
+   *
+   * Resolve when we successfully forget the given network; reject when any error
+   * occurs.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aNetwork
+   *        An object of MozWifiNetwork.
+   *
+   * @return A deferred promise.
+   */
+  function forgetNetwork(aNetwork) {
+    let request = wifiManager.forget(aNetwork);
+    return wrapDomRequestAsPromise(request)
+      .then(event => event.target.result);
+  }
+
+  /**
+   * Forget all known networks.
+   *
+   * Resolve when we successfully forget all the known network;
+   * reject when any error occurs.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function forgetAllKnownNetworks() {
+
+    function createForgetNetworkChain(aNetworks) {
+      let chain = Promise.resolve();
+
+      aNetworks.forEach(function (aNetwork) {
+        chain = chain.then(() => forgetNetwork(aNetwork));
+      });
+
+      return chain;
+    }
+
+    return getKnownNetworks()
+      .then(networks => createForgetNetworkChain(networks));
+  }
+
+  /**
+   * Get all known networks.
+   *
+   * Resolve when we get all the known networks; reject when any error
+   * occurs.
+   *
+   * Fulfill params: An array of MozWifiNetwork
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function getKnownNetworks() {
+    let request = wifiManager.getKnownNetworks();
+    return wrapDomRequestAsPromise(request)
+      .then(event => event.target.result);
+  }
+
+  /**
+   * Set the given network to static ip mode.
+   *
+   * Resolve when we set static ip mode successfully; reject when any error
+   * occurs.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function setStaticIpMode(aNetwork, aConfig) {
+    let request = wifiManager.setStaticIpMode(aNetwork, aConfig);
+    return wrapDomRequestAsPromise(request)
+      .then(event => event.target.result);
+  }
+
+  /**
+   * Issue a request to scan all wifi available networks.
+   *
+   * Resolve when we get the scan result; reject when any error
+   * occurs.
+   *
+   * Fulfill params: An array of MozWifiNetwork
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function requestWifiScan() {
+    let request = wifiManager.getNetworks();
+    return wrapDomRequestAsPromise(request)
+      .then(event => event.target.result);
+  }
+
+  /**
+   * Import a certificate with nickname and password.
+   *
+   * Resolve when we import certificate successfully; reject when any error
+   * occurs.
+   *
+   * Fulfill params: An object of certificate information.
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function importCert(certBlob, password, nickname) {
+    let request = wifiManager.importCert(certBlob, password, nickname);
+    return wrapDomRequestAsPromise(request)
+      .then(event => event.target.result);
+  }
+
+  /**
+   * Delete certificate of nickname.
+   *
+   * Resolve when we delete certificate successfully; reject when any error
+   * occurs.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function deleteCert(nickname) {
+    let request = wifiManager.deleteCert(nickname);
+    return wrapDomRequestAsPromise(request)
+      .then(event => event.target.result);
+  }
+
+  /**
+   * Get list of imported certificates.
+   *
+   * Resolve when we get certificate list successfully; reject when any error
+   * occurs.
+   *
+   * Fulfill params: Nickname of imported certificate arranged by usage.
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function getImportedCerts() {
+    let request = wifiManager.getImportedCerts();
+    return wrapDomRequestAsPromise(request)
+      .then(event => event.target.result);
+  }
+
+  /**
+   * Request wifi scan and verify the scan result as well.
+   *
+   * Issue a wifi scan request and check if the result is expected.
+   * Since the old APs may be cached and the newly added APs may be
+   * still not scan-able, a couple of attempts are acceptable.
+   * Resolve if we eventually get the expected scan result; reject otherwise.
+   *
+   * Fulfill params: The scan result, which is an array of MozWifiNetwork
+   * Reject params: (none)
+   *
+   * @param aRetryCnt
+   *        The maxmimum number of attempts until we get the expected scan result.
+   * @param aExpectedNetworks
+   *        An array of object, each of which contains at least the |ssid| property.
+   *
+   * @return A deferred promise.
+   */
+  function testWifiScanWithRetry(aRetryCnt, aExpectedNetworks) {
+
+    // Check if every single ssid of each |aScanResult| exists in |aExpectedNetworks|
+    // as well as the length of |aScanResult| equals to |aExpectedNetworks|.
+    function isScanResultExpected(aScanResult) {
+      if (aScanResult.length !== aExpectedNetworks.length) {
+        return false;
+      }
+
+      for (let i = 0; i < aScanResult.length; i++) {
+        if (-1 === getFirstIndexBySsid(aScanResult[i].ssid, aExpectedNetworks)) {
+          return false;
+        }
+      }
+      return true;
+    }
+
+    return requestWifiScan()
+      .then(function (networks) {
+        if (isScanResultExpected(networks, aExpectedNetworks)) {
+          return networks;
+        }
+        if (aRetryCnt > 0) {
+          return testWifiScanWithRetry(aRetryCnt - 1, aExpectedNetworks);
+        }
+        throw 'Unexpected scan result!';
+      });
+  }
+
+  /**
+   * Test wifi association.
+   *
+   * Associate with the given network object which is obtained by
+   * MozWifiManager.getNetworks() (i.e. MozWifiNetwork).
+   * Resolve when the 'connected' status change event is received.
+   * Note that we might see other events like 'connecting'
+   * before 'connected'. So we need to call |waitForWifiManagerEventOnce|
+   * again whenever non 'connected' event is seen. Never reject.
+   *
+   * Fulfill params: (none)
+   *
+   * @param aNetwork
+   *        An object of MozWifiNetwork.
+   *
+   * @return A deferred promise.
+   */
+  function testAssociate(aNetwork) {
+    setPasswordIfNeeded(aNetwork);
+
+    let promises = [];
+
+    // Register the event listerner to wait for 'connected' event first
+    // to avoid racing issue.
+    promises.push(waitForConnected(aNetwork));
+
+    // Then we do the association.
+    let request = wifiManager.associate(aNetwork);
+    promises.push(wrapDomRequestAsPromise(request));
+
+    return Promise.all(promises);
+  }
+
+  function waitForConnected(aExpectedNetwork) {
+    return waitForWifiManagerEventOnce('statuschange')
+      .then(function onstatuschange(event) {
+        log("event.status: " + event.status);
+        log("event.network.ssid: " + (event.network ? event.network.ssid : ''));
+
+        if ("connected" === event.status &&
+            event.network.ssid === aExpectedNetwork.ssid) {
+          return; // Got expected 'connected' event from aNetwork.ssid.
+        }
+
+        log('Not expected "connected" statuschange event. Wait again!');
+        return waitForConnected(aExpectedNetwork);
+      });
+  }
+
+  /**
+   * Set the password for associating the given network if needed.
+   *
+   * Set the password by looking up HOSTAPD_CONFIG_LIST. This function
+   * will also set |keyManagement| properly.
+   *
+   * @param aNetwork
+   *        The MozWifiNetwork object.
+   */
+  function setPasswordIfNeeded(aNetwork) {
+    let i = getFirstIndexBySsid(aNetwork.ssid, HOSTAPD_CONFIG_LIST);
+    if (-1 === i) {
+      log('unknown ssid: ' + aNetwork.ssid);
+      return; // Unknown network. Assume insecure.
+    }
+
+    if (!aNetwork.security.length) {
+      return; // No need to set password.
+    }
+
+    let security = aNetwork.security[0];
+    if (/PSK$/.test(security)) {
+      aNetwork.psk = HOSTAPD_CONFIG_LIST[i].wpa_passphrase;
+      aNetwork.keyManagement = 'WPA-PSK';
+    } else if (/WEP$/.test(security)) {
+      aNetwork.wep = HOSTAPD_CONFIG_LIST[i].wpa_passphrase;
+      aNetwork.keyManagement = 'WEP';
+    }
+  }
+
+  /**
+   * Set mozSettings values.
+   *
+   * Resolve if that mozSettings value is set successfully, reject otherwise.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aSettings
+   *        An object of format |{key1: value1, key2: value2, ...}|.
+   * @param aAllowError [optional]
+   *        A boolean value.  If set to true, an error response won't be treated
+   *        as test failure.  Default: false.
+   *
+   * @return A deferred promise.
+   */
+  function setSettings(aSettings) {
+    let lock = window.navigator.mozSettings.createLock();
+    let request = lock.set(aSettings);
+    let deferred = Promise.defer();
+    lock.onsettingstransactionsuccess = function () {
+        ok(true, "setSettings(" + JSON.stringify(aSettings) + ")");
+      deferred.resolve();
+    };
+    lock.onsettingstransactionfailure = function (aEvent) {
+      ok(false, "setSettings(" + JSON.stringify(aSettings) + ")");
+      deferred.reject();
+      throw aEvent.target.error;
+    };
+    return deferred.promise;
+  }
+
+  /**
+   * Set mozSettings value with only one key.
+   *
+   * Resolve if that mozSettings value is set successfully, reject otherwise.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aKey
+   *        A string key.
+   * @param aValue
+   *        An object value.
+   * @param aAllowError [optional]
+   *        A boolean value.  If set to true, an error response won't be treated
+   *        as test failure.  Default: false.
+   *
+   * @return A deferred promise.
+   */
+  function setSettings1(aKey, aValue, aAllowError) {
+    let settings = {};
+    settings[aKey] = aValue;
+    return setSettings(settings, aAllowError);
+  }
+
+  /**
+   * Get mozSettings value specified by @aKey.
+   *
+   * Resolve if that mozSettings value is retrieved successfully, reject
+   * otherwise.
+   *
+   * Fulfill params:
+   *   The corresponding mozSettings value of the key.
+   * Reject params: (none)
+   *
+   * @param aKey
+   *        A string.
+   * @param aAllowError [optional]
+   *        A boolean value.  If set to true, an error response won't be treated
+   *        as test failure.  Default: false.
+   *
+   * @return A deferred promise.
+   */
+  function getSettings(aKey, aAllowError) {
+    let request =
+      navigator.mozSettings.createLock().get(aKey);
+    return wrapDomRequestAsPromise(request)
+      .then(function resolve(aEvent) {
+        ok(true, "getSettings(" + aKey + ") - success");
+        return aEvent.target.result[aKey];
+      }, function reject(aEvent) {
+        ok(aAllowError, "getSettings(" + aKey + ") - error");
+      });
+  }
+
+
+  /**
+   * Start hostapd processes with given configuration list.
+   *
+   * For starting one hostapd, we need to generate a specific config file
+   * then launch a hostapd process with the confg file path passed. The
+   * config file is generated by two sources: one is the common
+   * part (HOSTAPD_COMMON_CONFIG) and the other is from the given |aConfigList|.
+   * Resolve when all the hostpads are requested to start. It is not guaranteed
+   * that all the hostapds will be up and running successfully. Never reject.
+   *
+   * Fulfill params: (none)
+   *
+   * @param aConfigList
+   *        An array of config objects, each property in which will be
+   *        output to the confg file with the format: [key]=[value] in one line.
+   *        See http://hostap.epitest.fi/cgit/hostap/plain/hostapd/hostapd.conf
+   *        for more information.
+   *
+   * @return A deferred promise.
+   */
+  function startHostapds(aConfigList) {
+
+    function createConfigFromCommon(aIndex) {
+      // Create an copy of HOSTAPD_COMMON_CONFIG.
+      let config = JSON.parse(JSON.stringify(HOSTAPD_COMMON_CONFIG));
+
+      // Add user config.
+      for (let key in aConfigList[aIndex]) {
+        config[key] = aConfigList[aIndex][key];
+      }
+
+      // 'interface' is a required field but no need of being configurable
+      // for a test case. So we initialize this field on our own.
+      config.interface = 'AP-' + aIndex;
+
+      return config;
+    }
+
+    function startOneHostapd(aIndex) {
+      let configFileName = HOSTAPD_CONFIG_PATH + 'ap' + aIndex + '.conf';
+      return writeHostapdConfFile(configFileName, createConfigFromCommon(aIndex))
+        .then(() => runEmulatorShellSafe(['hostapd', '-B', configFileName]))
+        .then(function (reply) {
+          // It may fail at the first time due to the previous ungracefully terminated one.
+          if (reply.length === 0) {
+            // The hostapd starts successfully
+            return;
+          }
+
+          if (reply[0].indexOf('bind(PF_UNIX): Address already in use') !== -1) {
+            return startOneHostapd(aIndex);
+          }
+        });
+    }
+
+    return Promise.all(aConfigList.map(function(aConfig, aIndex) {
+      return startOneHostapd(aIndex);
+    }));
+  }
+
+  /**
+   * Kill all the running hostapd processes.
+   *
+   * Use shell command 'kill -9' to kill all hostapds. Never reject.
+   *
+   * Fulfill params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function killAllHostapd() {
+    return getProcessDetail('hostapd')
+      .then(function (runningHostapds) {
+        let promises = runningHostapds.map(runningHostapd => {
+          return runEmulatorShellSafe(['kill', '-9', runningHostapd.pid]);
+        });
+        return Promise.all(promises);
+      });
+  }
+
+  /**
+   * Write out the config file to the given path.
+   *
+   * For each key/value pair in |aConfig|,
+   *
+   * [key]=[value]
+   *
+   * will be output to one new line. Never reject.
+   *
+   * Fulfill params: (none)
+   *
+   * @param aFilePath
+   *        The file path that we desire the config file to be located.
+   *
+   * @param aConfig
+   *        The config object.
+   *
+   * @return A deferred promise.
+   */
+  function writeHostapdConfFile(aFilePath, aConfig) {
+    let content = '';
+    for (let key in aConfig) {
+      if (aConfig.hasOwnProperty(key)) {
+        content += (key + '=' + aConfig[key] + '\n');
+      }
+    }
+    return writeFile(aFilePath, content);
+  }
+
+  /**
+   * Write file to the given path filled with given content.
+   *
+   * For now it is implemented by shell command 'echo'. Also, if the
+   * content contains whitespace, we need to quote the content to
+   * avoid error. Never reject.
+   *
+   * Fulfill params: (none)
+   *
+   * @param aFilePath
+   *        The file path that we desire the file to be located.
+   *
+   * @param aContent
+   *        The content as string which should be written to the file.
+   *
+   * @return A deferred promise.
+   */
+  function writeFile(aFilePath, aContent) {
+    const CONTENT_MAX_LENGTH = 900;
+    var commands = [];
+    for (var i = 0; i < aContent.length; i += CONTENT_MAX_LENGTH) {
+      var content = aContent.substr(i, CONTENT_MAX_LENGTH);
+      if (-1 === content.indexOf(' ')) {
+        content = '"' + content + '"';
+      }
+      commands.push(['echo', '-n', content, i === 0 ? '>' : '>>', aFilePath]);
+    }
+
+    let chain = Promise.resolve();
+    commands.forEach(function (command) {
+      chain = chain.then(() => runEmulatorShellSafe(command));
+    });
+    return chain;
+  }
+
+  /**
+   * Check if a init service is running or not.
+   *
+   * Check the android property 'init.svc.[aServiceName]' to determine if
+   * a init service is running. Reject if the propery is neither 'running'
+   * nor 'stopped'.
+   *
+   * Fulfill params:
+   *   result -- |true| if the init service is running; |false| otherwise.
+   * Reject params: (none)
+   *
+   * @param aServiceName
+   *        The init service name.
+   *
+   * @return A deferred promise.
+   */
+  function isInitServiceRunning(aServiceName) {
+    return runEmulatorShellSafe(['getprop', 'init.svc.' + aServiceName])
+      .then(function (result) {
+        if ('running' !== result[0] && 'stopped' !== result[0]) {
+          throw 'Init service running state should be "running" or "stopped".';
+        }
+        return 'running' === result[0];
+      });
+  }
+
+  /**
+   * Wait for timeout.
+   *
+   * Resolve when the given duration elapsed. Never reject.
+   *
+   * Fulfill params: (none)
+   *
+   * @param aTimeoutMs
+   *        The duration after which the timeout event should occurs.
+   *
+   * @return A deferred promise.
+   */
+  function waitForTimeout(aTimeoutMs) {
+    let deferred = Promise.defer();
+
+    setTimeout(function() {
+      deferred.resolve();
+    }, aTimeoutMs);
+
+    return deferred.promise;
+  }
+
+  /**
+   * Start or stop an init service.
+   *
+   * Use shell command 'start'/'stop' to start/stop an init service.
+   * The running state will also be checked after we start/stop the service.
+   * Resolve if the service is successfully started/stopped; Reject otherwise.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aServiceName
+   *        The name of the service we want to start/stop.
+   *
+   * @param aStart
+   *        |true| for starting the init service. |false| for stopping.
+   *
+   * @return A deferred promise.
+   */
+  function startStopInitService(aServiceName, aStart) {
+    let retryCnt = 5;
+
+    return runEmulatorShellSafe([aStart ? 'start' : 'stop', aServiceName])
+      .then(() => isInitServiceRunning(aServiceName))
+      .then(function onIsServiceRunningResolved(aIsRunning) {
+        if (aStart === aIsRunning) {
+          return;
+        }
+
+        if (retryCnt-- > 0) {
+          log('Failed to ' + (aStart ? 'start ' : 'stop ') + aServiceName +
+              '. Retry: ' + retryCnt);
+
+          return waitForTimeout(500)
+            .then(() => isInitServiceRunning(aServiceName))
+            .then(onIsServiceRunningResolved);
+        }
+
+        throw 'Failed to ' + (aStart ? 'start' : 'stop') + ' ' + aServiceName;
+      });
+  }
+
+  /**
+   * Start the stock hostapd.
+   *
+   * Since the stock hostapd is an init service, use |startStopInitService| to
+   * start it. Note that we might fail to start the stock hostapd at the first time
+   * for unknown reason so give it the second chance to start again.
+   * Resolve when we are eventually successful to start the stock hostapd; Reject
+   * otherwise.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function startStockHostapd() {
+    return startStopInitService(STOCK_HOSTAPD_NAME, true)
+      .then(null, function onreject() {
+        log('Failed to restart goldfish-hostapd at the first time. Try again!');
+        return startStopInitService((STOCK_HOSTAPD_NAME), true);
+      });
+  }
+
+  /**
+   * Stop the stock hostapd.
+   *
+   * Since the stock hostapd is an init service, use |startStopInitService| to
+   * stop it.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function stopStockHostapd() {
+    return startStopInitService(STOCK_HOSTAPD_NAME, false);
+  }
+
+  /**
+   * Get the index of the first matching entry by |ssid|.
+   *
+   * Find the index of the first entry of |aArray| which property |ssid|
+   * is same as |aSsid|.
+   *
+   * @param aSsid
+   *        The ssid that we want to match.
+   * @param aArray
+   *        An array of objects, each of which should have the property |ssid|.
+   *
+   * @return The 0-based index of first matching entry if found; -1 otherwise.
+   */
+  function getFirstIndexBySsid(aSsid, aArray) {
+    for (let i = 0; i < aArray.length; i++) {
+      if (aArray[i].ssid === aSsid) {
+        return i;
+      }
+    }
+    return -1;
+  }
+
+  /**
+   * Count the number of running process and verify if the count is expected.
+   *
+   * Return a promise that resolves when the process has expected number
+   * of running instances and rejects otherwise.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aOrigWifiEnabled
+   *        Boolean which indicates wifi was originally enabled.
+   *
+   * @return A deferred promise.
+   */
+  function verifyNumOfProcesses(aProcessName, aExpectedNum) {
+    return getProcessDetail(aProcessName)
+      .then(function (detail) {
+        if (detail.length === aExpectedNum) {
+          return;
+        }
+        throw 'Unexpected number of running processes:' + aProcessName +
+              ', expected: ' + aExpectedNum + ', actual: ' + detail.length;
+      });
+  }
+
+  /**
+   * Execute 'netcfg' shell and parse the result.
+   *
+   * Resolve when the executing is successful and reject otherwise.
+   *
+   * Fulfill params: Command result object, each key of which is the interface
+   *                 name and value is { ip(string), prefix(string) }.
+   * Reject params: String that indicates the reason of rejection.
+   *
+   * @return A deferred promise.
+   */
+  function exeAndParseNetcfg() {
+    return runEmulatorShellSafe(['netcfg'])
+      .then(function (aLines) {
+        // Sample output:
+        //
+        // lo       UP     127.0.0.1/8   0x00000049 00:00:00:00:00:00
+        // eth0     UP     10.0.2.15/24  0x00001043 52:54:00:12:34:56
+        // rmnet1   DOWN   0.0.0.0/0   0x00001002 52:54:00:12:34:58
+        // rmnet2   DOWN   0.0.0.0/0   0x00001002 52:54:00:12:34:59
+        // rmnet3   DOWN   0.0.0.0/0   0x00001002 52:54:00:12:34:5a
+        // wlan0    UP     192.168.1.1/24  0x00001043 52:54:00:12:34:5b
+        // sit0     DOWN   0.0.0.0/0   0x00000080 00:00:00:00:00:00
+        // rmnet0   UP     10.0.2.100/24  0x00001043 52:54:00:12:34:57
+        //
+        let netcfgResult = {};
+        aLines.forEach(function (aLine) {
+          let tokens = aLine.split(/\s+/);
+          if (tokens.length < 5) {
+            return;
+          }
+          let ifname = tokens[0];
+          let [ip, prefix] = tokens[2].split('/');
+          netcfgResult[ifname] = { ip: ip, prefix: prefix };
+        });
+        log("netcfg result:" + JSON.stringify(netcfgResult));
+
+        return netcfgResult;
+      });
+  }
+
+  /**
+   * Execute 'ip route' and parse the result.
+   *
+   * Resolve when the executing is successful and reject otherwise.
+   *
+   * Fulfill params: Command result object, each key of which is the interface
+   *                 name and value is { src(string), gateway(string),
+   *                 default(boolean) }.
+   * Reject params: String that indicates the reason of rejection.
+   *
+   * @return A deferred promise.
+   */
+  function exeAndParseIpRoute() {
+    return runEmulatorShellSafe(['ip', 'route'])
+      .then(function (aLines) {
+        // Sample output:
+        //
+        // 10.0.2.4 via 10.0.2.2 dev rmnet0
+        // 10.0.2.3 via 10.0.2.2 dev rmnet0
+        // 192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.1
+        // 10.0.2.0/24 dev eth0  proto kernel  scope link  src 10.0.2.15
+        // 10.0.2.0/24 dev rmnet0  proto kernel  scope link  src 10.0.2.100
+        // default via 10.0.2.2 dev rmnet0
+        // default via 10.0.2.2 dev eth0  metric 2
+        //
+
+        let ipRouteResult = {};
+
+        // Parse source ip for each interface.
+        aLines.forEach(function (aLine) {
+          let tokens = aLine.trim().split(/\s+/);
+          let srcIndex = tokens.indexOf('src');
+          if (srcIndex < 0 || srcIndex + 1 >= tokens.length) {
+            return;
+          }
+          let ifname = tokens[2];
+          let src = tokens[srcIndex + 1];
+          ipRouteResult[ifname] = { src: src, default: false, gateway: null };
+        });
+
+        // Parse default interfaces.
+        aLines.forEach(function (aLine) {
+          let tokens = aLine.split(/\s+/);
+          if (tokens.length < 2) {
+            return;
+          }
+          if ('default' === tokens[0]) {
+            let ifnameIndex = tokens.indexOf('dev');
+            if (ifnameIndex < 0 || ifnameIndex + 1 >= tokens.length) {
+              return;
+            }
+            let ifname = tokens[ifnameIndex + 1];
+            if (!ipRouteResult[ifname]) {
+              return;
+            }
+            ipRouteResult[ifname].default = true;
+            let gwIndex = tokens.indexOf('via');
+            if (gwIndex < 0 || gwIndex + 1 >= tokens.length) {
+              return;
+            }
+            ipRouteResult[ifname].gateway = tokens[gwIndex + 1];
+            return;
+          }
+        });
+        log("ip route result:" + JSON.stringify(ipRouteResult));
+
+        return ipRouteResult;
+      });
+  }
+
+  /**
+   * Verify everything about routing when the wifi tethering is either on or off.
+   *
+   * We use two unix commands to verify the routing: 'netcfg' and 'ip route'.
+   * For now the following two things will be checked:
+   *   1) The default route interface should be 'rmnet0'.
+   *   2) wlan0 is up and its ip is set to a private subnet.
+   *
+   * We also verify iptables output as netd's NatController will execute
+   *   $ iptables -t nat -A POSTROUTING -o rmnet0 -j MASQUERADE
+   *
+   * Resolve when the verification is successful and reject otherwise.
+   *
+   * Fulfill params: (none)
+   * Reject params: String that indicates the reason of rejection.
+   *
+   * @return A deferred promise.
+   */
+  function verifyTetheringRouting(aEnabled) {
+    let netcfgResult;
+    let ipRouteResult;
+
+    // Find MASQUERADE in POSTROUTING section. 'MASQUERADE' should be found
+    // when tethering is enabled. 'MASQUERADE' shouldn't be found when tethering
+    // is disabled.
+    function verifyIptables() {
+      let MASQUERADE_checkSection = 'POSTROUTING';
+      if (sdkVersion > 15) {
+        // Check 'natctrl_nat_POSTROUTING' section after ICS.
+        MASQUERADE_checkSection = 'natctrl_nat_POSTROUTING';
+      }
+
+      return runEmulatorShellSafe(['iptables', '-t', 'nat', '-L', MASQUERADE_checkSection])
+        .then(function(aLines) {
+          // $ iptables -t nat -L POSTROUTING
+          //
+          // Sample output (tethering on):
+          //
+          // Chain POSTROUTING (policy ACCEPT)
+          // target     prot opt source               destination
+          // MASQUERADE  all  --  anywhere             anywhere
+          //
+          let found = (function find_MASQUERADE() {
+            // Skip first two lines.
+            for (let i = 2; i < aLines.length; i++) {
+              if (-1 !== aLines[i].indexOf('MASQUERADE')) {
+                return true;
+              }
+            }
+            return false;
+          })();
+
+          if ((aEnabled && !found) || (!aEnabled && found)) {
+            throw 'MASQUERADE' + (found ? '' : ' not') + ' found while tethering is ' +
+                  (aEnabled ? 'enabled' : 'disabled');
+          }
+        });
+    }
+
+    function verifyDefaultRouteAndIp(aExpectedWifiTetheringIp) {
+      if (aEnabled) {
+        isOrThrow(ipRouteResult['rmnet0'].src, netcfgResult['rmnet0'].ip, 'rmnet0.ip');
+        isOrThrow(ipRouteResult['rmnet0'].default, true, 'rmnet0.default');
+
+        isOrThrow(ipRouteResult['wlan0'].src, netcfgResult['wlan0'].ip, 'wlan0.ip');
+        isOrThrow(ipRouteResult['wlan0'].src, aExpectedWifiTetheringIp, 'expected ip');
+        isOrThrow(ipRouteResult['wlan0'].default, false, 'wlan0.default');
+      }
+    }
+
+    return verifyIptables()
+      .then(exeAndParseNetcfg)
+      .then((aResult) => { netcfgResult = aResult; })
+      .then(exeAndParseIpRoute)
+      .then((aResult) => { ipRouteResult = aResult; })
+      .then(() => getSettings(SETTINGS_TETHERING_WIFI_IP))
+      .then(ip => verifyDefaultRouteAndIp(ip));
+  }
+
+  /**
+   * Clean up all the allocated resources and running services for the test.
+   *
+   * After the test no matter success or failure, we should
+   * 1) Restore to the wifi original state (enabled or disabled)
+   * 2) Wait until all pending emulator shell commands are done.
+   *
+   * |finsih| will be called in the end.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @return A deferred promise.
+   */
+  function cleanUp() {
+    waitFor(function() {
+      return ensureWifiEnabled(true)
+        .then(forgetAllKnownNetworks)
+        .then(() => ensureWifiEnabled(wifiOrigEnabled))
+        .then(finish);
+    }, function() {
+      return pendingEmulatorShellCount === 0;
+    });
+  }
+
+  /**
+   * Init the test environment.
+   *
+   * Mainly add the required permissions and initialize the wifiManager
+   * and the orignal state of wifi. Reject if failing to create
+   * window.navigator.mozWifiManager; resolve if all is well.
+   *
+   * |finsih| will be called in the end.
+   *
+   * Fulfill params: (none)
+   * Reject params: The reject reason.
+   *
+   * @return A deferred promise.
+   */
+  function initTestEnvironment() {
+    return addRequiredPermissions()
+      .then(function() {
+        wifiManager = window.navigator.mozWifiManager;
+        if (!wifiManager) {
+          throw 'window.navigator.mozWifiManager is NULL';
+        }
+        wifiOrigEnabled = wifiManager.enabled;
+      })
+      .then(() => runEmulatorShellSafe(['getprop', 'ro.build.version.sdk']))
+      .then(aLines => {
+        sdkVersion = parseInt(aLines[0]);
+      });
+  }
+
+  //---------------------------------------------------
+  // Public test suite functions
+  //---------------------------------------------------
+  suite.getWifiManager = (() => wifiManager);
+  suite.ensureWifiEnabled = ensureWifiEnabled;
+  suite.requestWifiEnabled = requestWifiEnabled;
+  suite.startHostapds = startHostapds;
+  suite.getProcessDetail = getProcessDetail;
+  suite.killAllHostapd = killAllHostapd;
+  suite.wrapDomRequestAsPromise = wrapDomRequestAsPromise;
+  suite.waitForWifiManagerEventOnce = waitForWifiManagerEventOnce;
+  suite.verifyNumOfProcesses = verifyNumOfProcesses;
+  suite.testWifiScanWithRetry = testWifiScanWithRetry;
+  suite.getFirstIndexBySsid = getFirstIndexBySsid;
+  suite.testAssociate = testAssociate;
+  suite.getKnownNetworks = getKnownNetworks;
+  suite.setStaticIpMode = setStaticIpMode;
+  suite.requestWifiScan = requestWifiScan;
+  suite.waitForConnected = waitForConnected;
+  suite.forgetNetwork = forgetNetwork;
+  suite.waitForTimeout = waitForTimeout;
+  suite.waitForRilDataConnected = waitForRilDataConnected;
+  suite.requestTetheringEnabled = requestTetheringEnabled;
+  suite.importCert = importCert;
+  suite.getImportedCerts = getImportedCerts;
+  suite.deleteCert = deleteCert;
+  suite.writeFile = writeFile;
+  suite.exeAndParseNetcfg = exeAndParseNetcfg;
+  suite.exeAndParseIpRoute = exeAndParseIpRoute;
+
+  /**
+   * Common test routine.
+   *
+   * Start a test with the given test case chain. The test environment will be
+   * settled down before the test. After the test, all the affected things will
+   * be restored.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aTestCaseChain
+   *        The test case entry point, which can be a function or a promise.
+   *
+   * @return A deferred promise.
+   */
+  suite.doTest = function(aTestCaseChain) {
+    return initTestEnvironment()
+      .then(aTestCaseChain)
+      .then(function onresolve() {
+        cleanUp();
+      }, function onreject(aReason) {
+        ok(false, 'Promise rejects during test' + (aReason ? '(' + aReason + ')' : ''));
+        cleanUp();
+      });
+  };
+
+  /**
+   * Common test routine without the presence of stock hostapd.
+   *
+   * Same as doTest except stopping the stock hostapd before test
+   * and restarting it after test.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aTestCaseChain
+   *        The test case entry point, which can be a function or a promise.
+   *
+   * @return A deferred promise.
+   */
+  suite.doTestWithoutStockAp = function(aTestCaseChain) {
+    return suite.doTest(function() {
+      return stopStockHostapd()
+        .then(aTestCaseChain)
+        .then(startStockHostapd);
+    });
+  };
+
+  /**
+   * The common test routine for wifi tethering.
+   *
+   * Similar as doTest except that it will set 'ril.data.enabled' to true
+   * before testing and restore it afterward. It will also verify 'ril.data.enabled'
+   * and 'tethering.wifi.enabled' to be false in the beginning. Note that this routine
+   * will NOT change the state of 'tethering.wifi.enabled' so the user should enable
+   * than disable on his/her own. This routine will only check if tethering is turned
+   * off after testing.
+   *
+   * Fulfill params: (none)
+   * Reject params: (none)
+   *
+   * @param aTestCaseChain
+   *        The test case entry point, which can be a function or a promise.
+   *
+   * @return A deferred promise.
+   */
+  suite.doTestTethering = function(aTestCaseChain) {
+
+    function verifyInitialState() {
+      return getSettings(SETTINGS_RIL_DATA_ENABLED)
+        .then(enabled => isOrThrow(enabled, false, SETTINGS_RIL_DATA_ENABLED))
+        .then(() => getSettings(SETTINGS_TETHERING_WIFI_ENABLED))
+        .then(enabled => isOrThrow(enabled, false, SETTINGS_TETHERING_WIFI_ENABLED));
+    }
+
+    function initTetheringTestEnvironment() {
+      // Enable ril data.
+      return Promise.all([waitForRilDataConnected(true),
+                          setSettings1(SETTINGS_RIL_DATA_ENABLED, true)])
+        .then(setSettings1(SETTINGS_TETHERING_WIFI_SECURITY, 'open'));
+    }
+
+    function restoreToInitialState() {
+      return setSettings1(SETTINGS_RIL_DATA_ENABLED, false)
+        .then(() => getSettings(SETTINGS_TETHERING_WIFI_ENABLED))
+        .then(enabled => is(enabled, false, 'Tethering should be turned off.'));
+    }
+
+    return suite.doTest(function() {
+      return verifyInitialState()
+        .then(initTetheringTestEnvironment)
+        // Since stock hostapd is not reliable after ICS, we just
+        // turn off potential stock hostapd during testing to avoid 
+        // interference.
+        .then(stopStockHostapd)
+        .then(aTestCaseChain)
+        .then(startStockHostapd)
+        .then(restoreToInitialState, function onreject(aReason) {
+          return restoreToInitialState()
+            .then(() => { throw aReason; }); // Re-throw the orignal reject reason.
+        });
+    });
+  };
+
+  /**
+   * Run test with imported certificate.
+   *
+   * Certificate will be imported and confirmed before running test, and be
+   * deleted after running test.
+   *
+   * Fulfill params: (none)
+   *
+   * @param certBlob
+   *        Certificate content as Blob.
+   * @param password
+   *        Password for importing certificate, only used for importing PKCS#12.
+   * @param nickanem
+   *        Nickname for imported certificate.
+   * @param usage
+   *        Expected usage of imported certificate.
+   * @param aTestCaseChain
+   *        The test case entry point, which can be a function or a promise.
+   *
+   * @return A deferred promise.
+   */
+  suite.doTestWithCertificate = function(certBlob, password, nickname, usage, aTestCaseChain) {
+    return suite.doTestWithoutStockAp(function() {
+      return ensureWifiEnabled(true)
+      // Import test certificate.
+      .then(() => importCert(certBlob, password, nickname))
+      .then(function(info) {
+        // Check import result.
+        is(info.nickname, nickname, "Imported nickname");
+        for (let i = 0; i < usage.length; i++) {
+          isnot(info.usage.indexOf(usage[i]), -1, "Usage " + usage[i]);
+        }
+      })
+      // Get imported certificate list.
+      .then(getImportedCerts)
+      // Check if certificate exists in imported certificate list.
+      .then(function(list) {
+        for (let i = 0; i < usage.length; i++) {
+          isnot(list[usage[i]].indexOf(nickname), -1,
+                "Certificate \"" + nickname + "\" of usage " + usage[i] + " is imported");
+        }
+      })
+      // Run test case.
+      .then(aTestCaseChain)
+      // Delete imported certificates.
+      .then(() => deleteCert(nickname))
+      // Check if certificate doesn't exist in imported certificate list.
+      .then(getImportedCerts)
+      .then(function(list) {
+        for (let i = 0; i < usage.length; i++) {
+          is(list[usage[i]].indexOf(nickname), -1, "Certificate is deleted");
+        }
+      })
+    });
+  };
+
+  return suite;
+})();