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I'm using RESTMock for my instrumentation tests, but it only works if I set usesCleartextTraffic to true in my manifest. I only want that to be true for instrumentation tests, though. Is there a way to do that?

I tried creating a new manifest file in the androidTest folder. The tests run but they fail like usesCleartextTraffic is still false.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="my.package">

    <application android:usesCleartextTraffic="true" />

</manifest>

I know that RESTMock supports https starting from version 0.3.2, but I'd rather not have to deal with it. I actually followed their guide and ended up with this error from OkHttp3:

java.lang.AssertionError: java.security.NoSuchAlgorithmException: The BC provider no longer provides an implementation for KeyPairGenerator.RSA. Please see https://android-developers.googleblog.com/2018/03/cryptography-changes-in-android-p.html for more details.

Any ideas?

EDIT:

I followed this answer and moved this manifest I created to the debug source folder and then it worked. Now the android:usesCleartextTraffic="true" option is only applied to my debug build, which is used by the instrumentation tests, so it works, but it still doesn't feel like the proper solution.

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Fred Porciúncula
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    Not sure why `AndroidManifes.xml` in `androidTest` directory didn't work for you, but it worked for me. I've added an answer with the exact details that worked for me, just in case is just a small detail. Let me know if it solves your issue. :) – Xavier Rubio Jansana Jan 08 '19 at 11:02

1 Answers1

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For me the solution is to add a simple AndroidManifest.xml in androidTest/AndroidManifest.xml. This is also mentioned in the answer you reference, but in that case it didn't work because old tooling didn't merge this AndroidManifest.xml.

So, inside androidTest directory, and next to java directory, I have the following:

~/source/my-library/src/androidTest develop*
❯ ls
AndroidManifest.xml java

With this AndroidManifest.xml file:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.mypackage.mylibrary">

    <application
        android:usesCleartextTraffic="true" />

</manifest>
Xavier Rubio Jansana
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    Thanks a lot for putting this answer together! Unfortunately it still doesn't work. I have all the tooling up to date, so I'm really not sure what might be wrong. – Fred Porciúncula Jan 10 '19 at 10:08
  • I would check whether `android:networkSecurityConfig` or `android:usesCleartextTraffic` is being merge in from other module. For this, I think your best bet is to check the merge report (e.g. `manifest-merger-release-report.txt` or `manifest-merger-debug-report.txt`). Using the Merged Manifest tab seems to not provide enough detail. Notice that, for example from my tests `app/build/outputs/logs/manifest-merger-debug-report.txt` is the right report, even for instrumented tests. – Xavier Rubio Jansana Jan 10 '19 at 20:22