NoClassDefFoundError when trying to instantiate MockWebServer

[kineita]

When attempting to use Retrofit and MockWebServer in my project, I get the following exception when initializing a MockWebServer object in my unit tests. When it is initialized => crash `java.lang.NoSuchMethodError: okhttp3.internal.Internal.initializeInstanceForTests()V

at okhttp3.mockwebserver.MockWebServer.<clinit>(MockWebServer.java:105)
at kineita.code.challenge.repository.FeedRepositoryUnitTest.<init>(FeedRepositoryUnitTest.kt:46)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:250)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:260)
at org.junit.runners.BlockJUnit4ClassRunner$2.runReflectiveCall(BlockJUnit4ClassRunner.java:309)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.mockito.internal.runners.DefaultInternalRunner$1.run(DefaultInternalRunner.java:99)
at org.mockito.internal.runners.DefaultInternalRunner.run(DefaultInternalRunner.java:105)
at org.mockito.internal.runners.StrictRunner.run(StrictRunner.java:40)
at org.mockito.junit.MockitoJUnitRunner.run(MockitoJUnitRunner.java:163)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)`

I checked same version in okhttps and MockWebServer, please check my gradle: `implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version" implementation 'androidx.core:core-ktx:1.3.2' implementation 'androidx.appcompat:appcompat:1.2.0' implementation 'com.google.android.material:material:1.3.0' implementation 'androidx.constraintlayout:constraintlayout:2.0.4'

implementation 'com.squareup.picasso:picasso:2.71828'

implementation 'com.github.bumptech.glide:glide:4.12.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.12.0'

implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.7.1'
implementation 'com.squareup.okhttp3:logging-interceptor:4.2.1'

// Koin for Kotlin
implementation "org.koin:koin-core:$koin_version"
// Koin AndroidX Scope features
implementation "org.koin:koin-androidx-scope:$koin_version"
// Koin AndroidX ViewModel features
implementation "org.koin:koin-androidx-viewmodel:$koin_version"
// Koin AndroidX Fragment features
implementation "org.koin:koin-androidx-fragment:$koin_version"
// Koin AndroidX WorkManager
implementation "org.koin:koin-androidx-workmanager:$koin_version"
// Koin AndroidX Jetpack Compose
implementation "org.koin:koin-androidx-compose:$koin_version"

testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
androidTestImplementation "org.koin:koin-test:2.2.2"
androidTestImplementation "org.mockito:mockito-android:2.22.0"
androidTestImplementation "org.mockito:mockito-core:3.5.9"
androidTestImplementation "org.mockito:mockito-inline:2.28.2"
testImplementation "org.mockito:mockito-core:3.5.9"
testImplementation "androidx.arch.core:core-testing:2.1.0"
testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.3.4'
testImplementation "org.koin:koin-test:$koin_version"
testImplementation "com.squareup.okhttp3:mockwebserver:3.14.9"
androidTestImplementation 'com.squareup.okhttp3:mockwebserver:3.14.9'`

[yschimke]

You can't mix any versions of com.squareup.okhttp3, you have 3.14.9 and 4.2.1 above. Why not apply the BOM to prevent this? https://github.com/square/okhttp#releases