Problem with LowLevelHttpTransport in unit tests

Question

I'm currently trying to run some unit tests on a class that uses HTTPtransport and is part of an Android application. The docs for google-api says that this should be fine since the Apache transport is built into Android.

However, when running my tests I get the following error:

java.lang.IllegalStateException: unable to load NetHttpTrasnport at com.google.api.client.http.HttpTransport.useLowLevelHttpTransport(HttpTransport.java:98) at com.google.api.client.http.HttpTransport.(HttpTransport.java:156) at com.google.api.client.googleapis.GoogleTransport.create(GoogleTransport.java:58) at uk.co.redfruit.android.whogotwhat.googlebase.GoogleBaseSearch.search(GoogleBaseSearch.java:41) at uk.co.redfruit.android.whogotwhat.test.GoogleBaseSearchTest.testSearchForBarcode(GoogleBaseSearchTest.java:22) at java.lang.reflect.Method.invokeNative(Native Method) at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169) at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154) at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:430) at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1447)

Is this a bug? Or am I just missing something?

Answer 1

Is it possible that you are using version 1.1 of the library? I just fixed a bug to make the Apache transport the default in version 1.2. So if you're using version 1.1, please try switching to 1.2 and let me if that doesn't resolve the error.

Disclaimer: I'm an owner of the google-api-java-client library.

Answer 2

OK - I figured out the problem. Due to the way you're trying to determine which environment you're in (using class.forName() and catching Exception) all classpath errors will cause this to fail - which can be misleading.

It was correctly determining my environment (so this was nothing to do with Unit Tests), but then failed to load some other classes.

By adding the apache client, repackaged and escape jars I was able to fix the problem. I would suggest that this could perhaps be improved upon.