Using @BeforeClass annotation in a method makes this method only access static methods and variables. To make your first code you must make obj static. That's why you're getting errors and changing the annotation to @Before works fine.
RuntimeException: Stub! on JSONObject with Robolectric
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30-09-2022 - |
Question
I have setup unit test using robolectric and gradle-android-test-plugin. I can run test without problem, but I try to use JSONOBJECT it fails with "java.lang.RuntimeException: Stub! at org.json.JSONObject.(JSONObject.java:7)" error.
Here my build.gradle file
buildscript {
repositories {
mavenCentral()
maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
}
dependencies {
classpath 'com.android.tools.build:gradle:0.7.+'
classpath 'com.squareup.gradle:gradle-android-test-plugin:0.9.1-SNAPSHOT'
}
}
apply plugin: 'android'
apply plugin: 'android-test'
repositories {
mavenCentral()
maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
}
android {
compileSdkVersion 19
buildToolsVersion '19.0.0'
defaultConfig {
minSdkVersion 14
targetSdkVersion 19
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
sourceSets {
instrumentTest.setRoot('src/test')
}
}
dependencies {
compile 'com.android.support:support-v4:+'
compile files('libs/org.eclipse.paho.client.mqttv3.jar')
compile files('libs/volley.jar')
testCompile 'junit:junit:4.10'
testCompile 'org.robolectric:robolectric:2.3-SNAPSHOT'
testCompile 'com.squareup:fest-android:1.0.+'
instrumentTestCompile 'junit:junit:4.10'
instrumentTestCompile 'org.robolectric:robolectric:2.3-SNAPSHOT'
instrumentTestCompile 'com.squareup:fest-android:1.0.+'
}
My java code:
import org.json.JSONException;
import org.json.JSONObject;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.annotation.Config;
import com.example.RobolectricGradleTestRunner;
@Config(emulateSdk = 18)
@RunWith(RobolectricGradleTestRunner.class)
public class VisitorChatTest {
JSONObject obj;
@BeforeClass
public void jsonTest() throws JSONException{
obj = new JSONObject("{ \"hello\" : \"test\"} ");
}
@Test
public void test() throws JSONException{
assertEquals(obj.getString("hello"), "test");
}
}
Edit: Found the mistake!
Instead of instantiating the JSONObject in @BeforeClass, instantiated it in @Before
import org.json.JSONException;
import org.json.JSONObject;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.annotation.Config;
import com.example.RobolectricGradleTestRunner;
@Config(emulateSdk = 18)
@RunWith(RobolectricGradleTestRunner.class)
public class VisitorChatTest {
JSONObject obj;
@Before
public void jsonTest() throws JSONException{
obj = new JSONObject("{ \"hello\" : \"test\"} ");
}
@Test
public void test() throws JSONException{
assertEquals(obj.getString("hello"), "test");
}
}
The class path is not set for @BeforeClass block
Solution
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