org.junit.contrib.java.lang.system
Class RestoreSystemProperties

java.lang.Object
  org.junit.rules.ExternalResource
      org.junit.contrib.java.lang.system.RestoreSystemProperties

All Implemented Interfaces:

org.junit.rules.TestRule

public class RestoreSystemProperties
extends org.junit.rules.ExternalResource

The RestoreSystemProperties rule undoes changes of system properties when the test finishes (whether it passes or fails).

Let's assume the system property YourProperty has the value YourValue. Now run the test

   public void YourTest {
     @Rule
     public final TestRule restoreSystemProperties = new RestoreSystemProperties();

     @Test
     public void overrideProperty() {
       System.setProperty("YourProperty", "other value");
       assertEquals("other value", System.getProperty("YourProperty"));
     }
   }
 

After running the test, the system property YourProperty has the value YourValue again.

Constructor Summary

RestoreSystemProperties()
Creates a RestoreSystemProperties rule that restores all system properties.

RestoreSystemProperties(String... properties)
Deprecated. Please use RestoreSystemProperties(). The rule restores all properties. That's why you don't have to specify the properties anymore.

Method Summary

void	add(String property) Deprecated. Simply remove all calls to this method. RestoreSystemProperties restores all properties automatically. That's why you don't have to add the properties anymore.
protected void	after()
protected void	before()

Methods inherited from class org.junit.rules.ExternalResource

apply

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RestoreSystemProperties

@Deprecated
public RestoreSystemProperties(String... properties)

Deprecated. Please use RestoreSystemProperties(). The rule restores all properties. That's why you don't have to specify the properties anymore.

Creates a RestoreSystemProperties rule that restores all system properties.

RestoreSystemProperties

public RestoreSystemProperties()

Creates a RestoreSystemProperties rule that restores all system properties.

Since:

1.8.0

Method Detail

add

@Deprecated
public void add(String property)

Deprecated. Simply remove all calls to this method. RestoreSystemProperties restores all properties automatically. That's why you don't have to add the properties anymore.

Does nothing.

Since:

1.6.0

before

protected void before()
               throws Throwable

Overrides:

before in class org.junit.rules.ExternalResource

Throws:

Throwable

after

protected void after()

Overrides:

after in class org.junit.rules.ExternalResource