Refactor EmergencyCallHelper to better handle DSDS

Refactor EmergencyCallHelper to better handle DSDS radios by disabling
airplane mode and waiting for each Phone's ServiceState to change to
allow for Emergency Calling.

Also, some tests are added using AndroidJUnit4Runner

This is the first part in a series of changes to the Telephony code.

Bug: 28200728
Change-Id: I642615480090f0b047cea00ab9f3256f321dfaa1
diff --git a/tests/src/com/android/TelephonyTestBase.java b/tests/src/com/android/TelephonyTestBase.java
new file mode 100644
index 0000000..6dee12b
--- /dev/null
+++ b/tests/src/com/android/TelephonyTestBase.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android;
+
+import android.content.Context;
+import android.os.Handler;
+import android.support.test.InstrumentationRegistry;
+
+import com.android.phone.MockitoHelper;
+
+import org.mockito.MockitoAnnotations;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Helper class to load Mockito Resources into a test.
+ */
+public class TelephonyTestBase {
+
+    protected Context mContext;
+    MockitoHelper mMockitoHelper = new MockitoHelper();
+
+    public void setUp() throws Exception {
+        mContext = InstrumentationRegistry.getTargetContext();
+        mMockitoHelper.setUp(mContext, getClass());
+        MockitoAnnotations.initMocks(this);
+    }
+
+    public void tearDown() throws Exception {
+        mMockitoHelper.tearDown();
+    }
+
+    protected final void waitForHandlerAction(Handler h, long timeoutMillis) {
+        final CountDownLatch lock = new CountDownLatch(1);
+        h.post(lock::countDown);
+        while (lock.getCount() > 0) {
+            try {
+                lock.await(timeoutMillis, TimeUnit.MILLISECONDS);
+            } catch (InterruptedException e) {
+                // do nothing
+            }
+        }
+    }
+
+    protected final void waitForHandlerActionDelayed(Handler h, long timeoutMillis, long delayMs) {
+        final CountDownLatch lock = new CountDownLatch(1);
+        h.postDelayed(lock::countDown, delayMs);
+        while (lock.getCount() > 0) {
+            try {
+                lock.await(timeoutMillis, TimeUnit.MILLISECONDS);
+            } catch (InterruptedException e) {
+                // do nothing
+            }
+        }
+    }
+}