1 files changed, 100 insertions, 0 deletions
diff --git a/dom/system/gonk/tests/marionette/test_network_interface_mtu.js b/dom/system/gonk/tests/marionette/test_network_interface_mtu.js
new file mode 100644
index 000000000..679efe2ed
--- /dev/null
+++ b/dom/system/gonk/tests/marionette/test_network_interface_mtu.js
@@ -0,0 +1,100 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+MARIONETTE_TIMEOUT = 60000;
+MARIONETTE_HEAD_JS = "head.js";
+
+const TEST_MTU1 = "1410";
+const TEST_MTU2 = "1440";
+
+function setEmulatorAPN() {
+  let apn = [
+    [ { "carrier":"T-Mobile US",
+        "apn":"epc1.tmobile.com",
+        "types":["default"],
+        "mtu": TEST_MTU1 },
+      { "carrier":"T-Mobile US",
+        "apn":"epc2.tmobile.com",
+        "mmsc":"http://mms.msg.eng.t-mobile.com/mms/wapenc",
+        "types":["supl","mms","ims","dun", "fota"],
+        "mtu": TEST_MTU2 } ]
+  ];
+
+  return setSettings(SETTINGS_KEY_DATA_APN_SETTINGS, apn);
+}
+
+function verifyInitialState() {
+  // Data should be off before starting any test.
+  return getSettings(SETTINGS_KEY_DATA_ENABLED)
+    .then(value => {
+      is(value, false, "Data must be off");
+    });
+}
+
+function verifyMtu(aInterfaceName, aMtu) {
+  return runEmulatorShellCmdSafe(['ip', 'link', 'show', 'dev', aInterfaceName])
+    .then(aLines => {
+      // Sample output:
+      //
+      // 4: rmnet0: <BROADCAST,MULTICAST> mtu 1410 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000
+      // link/ether 52:54:00:12:34:58 brd ff:ff:ff:ff:ff:ff
+      //
+      let mtu;
+      aLines.some(function (aLine) {
+        let tokens = aLine.trim().split(/\s+/);
+        let mtuIndex = tokens.indexOf('mtu');
+        if (mtuIndex < 0 || mtuIndex + 1 >= tokens.length) {
+          return false;
+        }
+
+        mtu = tokens[mtuIndex + 1];
+        return true;
+      });
+
+      is(mtu, aMtu, aInterfaceName + "'s mtu.");
+    });
+}
+
+function testDefaultDataCallMtu() {
+  log("= testDefaultDataCallMtu =");
+
+  return setDataEnabledAndWait(true)
+    .then(aNetworkInfo => verifyMtu(aNetworkInfo.name, TEST_MTU1))
+    .then(() => setDataEnabledAndWait(false));
+}
+
+function testNonDefaultDataCallMtu() {
+  log("= testNonDefaultDataCallMtu =");
+
+  function doTestNonDefaultDataCallMtu(aType) {
+    log("doTestNonDefaultDataCallMtu: " + aType);
+
+    return setupDataCallAndWait(aType)
+      .then(aNetworkInfo => verifyMtu(aNetworkInfo.name, TEST_MTU2))
+      .then(() => deactivateDataCallAndWait(aType));
+  }
+
+  return doTestNonDefaultDataCallMtu(NETWORK_TYPE_MOBILE_MMS)
+    .then(() => doTestNonDefaultDataCallMtu(NETWORK_TYPE_MOBILE_SUPL))
+    .then(() => doTestNonDefaultDataCallMtu(NETWORK_TYPE_MOBILE_IMS))
+    .then(() => doTestNonDefaultDataCallMtu(NETWORK_TYPE_MOBILE_DUN))
+    .then(() => doTestNonDefaultDataCallMtu(NETWORK_TYPE_MOBILE_FOTA));
+}
+
+// Start test
+startTestBase(function() {
+  let origApnSettings;
+  return verifyInitialState()
+    .then(() => getSettings(SETTINGS_KEY_DATA_APN_SETTINGS))
+    .then(value => {
+      origApnSettings = value;
+    })
+    .then(() => setEmulatorAPN())
+    .then(() => testDefaultDataCallMtu())
+    .then(() => testNonDefaultDataCallMtu())
+    .then(() => {
+      if (origApnSettings) {
+        return setSettings(SETTINGS_KEY_DATA_APN_SETTINGS, origApnSettings);
+      }
+    });
+});