Espresso test case to control loopback call

webrtc/examples/BUILD.gn

Index: webrtc/examples/BUILD.gn
diff --git a/webrtc/examples/BUILD.gn b/webrtc/examples/BUILD.gn
index e6b73f017d2def3ee4fec0ff3d73e0591b121782..7056e406a85e6c7e589714d1cadf4a21eb79157c 100644
--- a/webrtc/examples/BUILD.gn
+++ b/webrtc/examples/BUILD.gn
@@ -25,6 +25,7 @@ group("examples") {
     public_deps += [
       ":AppRTCMobile",
       ":AppRTCMobileTest",
+      ":AppRTCMobileTestStubbedVideoIO",
     ]
   }
 
@@ -116,6 +117,11 @@ if (is_android) {
 
     deps = [
       ":AppRTCMobile_javalib",
+      "//third_party/android_support_test_runner:rules_java",

[kjellander_webrtc, 2016/12/27 06:31:42]

Please remove line 120-124 as they're no longer needed for this target.

[mandermo, 2017/01/03 14:17:58]

I manage to remove all the lines exept line 122, then I get this error:
"java.lang.ClassNotFoundException: Didn't find class
"android.support.test.runner.AndroidJUnitRunner"

[kjellander_webrtc, 2017/01/04 15:10:08]

Ah, that's probably related to the AndroidManifest.xml change.
Please replace it with //third_party/android_support_test_runner:runner_java
instead. The android.support.test.runner.AndroidJUnitRunner class is a part of
that target as well: 
https://cs.chromium.org/chromium/src/third_party/android_support_test_runner/...
I verified it by running
jar tvf
third_party/android_support_test_runner/lib/runner-0.5-release-no-dep.jar |grep
AndroidJUnitRunner

+      "//third_party/android_support_test_runner:runner_java",
+      "//third_party/espresso:espresso_all_java",
+      "//third_party/hamcrest:hamcrest_java",
+      "//third_party/junit",
       "//webrtc/sdk/android:libjingle_peerconnection_java",
     ]
 
@@ -123,6 +129,29 @@ if (is_android) {
       "//webrtc/examples/androidtests/src/org/appspot/apprtc/test/capturetestvideo.y4m",
     ]
   }
+
+  instrumentation_test_apk("AppRTCMobileTestStubbedVideoIO") {
+    apk_name = "AppRTCMobileTestStubbedVideoIO"
+    android_manifest = "androidtests/AndroidManifest.xml"
+
+    java_files = [ "androidtests/src/org/appspot/apprtc/test/ConnectActivityStubbedInputOutputTest.java" ]
+
+    apk_under_test = ":AppRTCMobile"
+
+    deps = [
+      ":AppRTCMobile_javalib",
+      "//third_party/android_support_test_runner:rules_java",
+      "//third_party/android_support_test_runner:runner_java",
+      "//third_party/espresso:espresso_all_java",
+      "//third_party/hamcrest:hamcrest_java",
+      "//third_party/junit",
+      "//webrtc/sdk/android:libjingle_peerconnection_java",
+    ]
+
+    data = [
+      "//resources/reference_video_640x360_30fps.y4m",
+    ]
+  }
 }
 
 if (is_ios || (is_mac && target_cpu != "x86")) {