java.io.IOException: unexpected end of stream on http://localhost:33339/

Issue

I am using retrofit and okhttp3.mockwebserver.MockWebServer for Android Test. I am getting this error while running a test.

Gradle:

 androidTestImplementation "com.squareup.okhttp3:mockwebserver:3.14.9"
def retrofit_version = "2.9.0"
    implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
    implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'

Android Test class has:

mockServer = MockWebServer()
mockServer.start()

//In some other class
Retrofit.Builder()
            .baseUrl(mockServer.url("/").toString())
            .addConverterFactory(GsonConverterFactory.create(GsonBuilder().create()))
            .build()


mockServer.enqueue(
        MockResponse()
            .setResponseCode(200)
            .setBody(getJson(fileName)))

I don't know what is missing tried adding header but still getting same error. Please help.

Solution

Corrected sequence of calling the mock api before the progress bar is displayed and the error is gone.

Answered By - snehal