Realm-java: 'Entity is not part of the schema for this Realm' when is under androidTest folder

[vicpinm]

Goal

I want to write an android instrumentation test to persist a RealmObject called 'Dog'. Test works fine if Dog is under /src/main/java folder. But Dog is a class only for testing, so I want to place it under /src/androidTest/java folder

Expected Results

Test should run fine after class is moved under /src/androidTest/java

Actual Results

Started running tests
java.lang.IllegalArgumentException: Dog is not part of the schema for this Realm

Code Sample

My test classes are:

@RunWith(AndroidJUnit4.class)
public class RealmTest {

    @Rule
    public TestRealmConfigurationFactory configFactory = new TestRealmConfigurationFactory();
    Realm realm = null;

    @Before
    public void setUp() {
        RealmConfiguration realmConfig = configFactory.createConfiguration();
        realm = Realm.getInstance(realmConfig);
    }

    @After
    public void tearDown() {
        realm.close();
    }

    @Test
    public void testPersistEntity() {
        realm.beginTransaction();
        realm.copyToRealm(new Dog());
        realm.commitTransaction();
    }
}


public class Dog extends RealmObject{

    private String name;

    public Dog() {}
}

Version of Realm and tooling

Realm version(s): 2.2.1

Realm sync feature enabled: no

Android Studio version: 2.1

Which Android version and device: 6.0

[kneth]

In the output from Gradle, do you see a line like Note: Processing class: Dog? Does it help to add @RealmClass to your Dog class?

[Zhuinden]

Do you use apt, or annotationProcessor?

[vicpinm]

Adding @RealmClass doesn't help, same result. I only see 'Note: Processing class: Dog' when Dog is under /src/main/java folder, if I place this class under /src/androidTest/java this message disappear. I'm not using apt nor annotationProccesor, this is my build.gradle:

````
apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
apply plugin: 'realm-android'

android {
compileSdkVersion 25
buildToolsVersion "25.0.1"

defaultConfig {
    minSdkVersion 15
    targetSdkVersion 25
    versionCode 1
    versionName "1.0"

    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
sourceSets {
    main.java.srcDirs += 'src/main/kotlin'
}

}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])

compile 'com.android.support:appcompat-v7:25.1.0'
compile 'io.reactivex:rxjava:1.1.6'
compile 'io.reactivex:rxandroid:1.2.1'
androidTestCompile 'com.android.support.test:runner:0.5'
androidTestCompile 'com.android.support.test:rules:0.5'
testCompile 'junit:junit:4.12'
compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"

}
repositories {
mavenCentral()
}
````

And my top level build.gradle:

````
buildscript {
ext.kotlin_version = '1.0.6'
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath "io.realm:realm-gradle-plugin:2.2.1"

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}

}
apply plugin: 'kotlin'

allprojects {
repositories {
jcenter()
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}
repositories {
mavenCentral()
}
dependencies {
compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
}
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
````

I can upload the project to a git repo if it helps.

Thanks you very much.

[Zhuinden]

Ah, this is something kapt-related. @zaki50 might know.

[vicpinm]

Yes, if I remove all kotlin related, test works properly. Is there any workaround for this problem?

[kneth]

We are by no means experts in Kotlin so currently we only have the following advices: https://realm.io/docs/java/latest/#kotlin

[zaki50]

https://github.com/realm/realm-java/blob/v2.2.2/gradle-plugin/src/main/groovy/io/realm/gradle/Realm.groovy#L66

We currently don't add dependencies of annotation processor to androidTest when the project is using kapt (this is the case of @vicpinm 's project).
I couldn't recall the reason.

I'll look into it more deeply.

[zaki50]

Adding following two lines to your dependencies in the build.gradle solves the problem?

    kaptAndroidTest 'io.realm:realm-annotations:2.2.1'
    kaptAndroidTest 'io.realm:realm-annotations-processor:2.2.1'

[vicpinm]

Yes, it's solved!! Thanks you so much!

[zaki50]

@vicpinm I've made a PR #4022 to solve this problem.

Once that PR is merged (and you update Realm to new version), current work-around (adding kaptAndroidTest dependencies) might cause an error. Don't forget to remove those lines when you updates Realm.

[zaki50]

re-opening this for #4022

[vicpinm]

Okey, thanks you so much

[tunjid]

@zaki50 @kneth

Hello! I'm running into a similar issue detailed below:

I have a kotlin project that uses Realm, and I'm trying to run an espresso test in it.

The issue is, the model objects in the src/main folder are not being processed in the src/androidTest folder when running the espresso test, so I get a

Entity is not part of the schema for this Realm. Error

There is a single test model object in the src/androidTest folder which is being added to the schema, however the rest ones in src/main are not.

Is there a way around this without having to use a realm module? As it's a UI test I want it to mirror the production app as close as possible.

Edit: Seems this is already documented here: https://github.com/realm/realm-java/issues/5586