# DisableOnAndroidDebug

Artifact: [androidx.test:rules](https://developer.android.com/jetpack/androidx/releases/test) [View Source](https://cs.android.com/search?q=file:androidx/test/rule/DisableOnAndroidDebug.java+class:androidx.test.rule.DisableOnAndroidDebug)

*** ** * ** ***


```
public class DisableOnAndroidDebug implements TestRule
```

<br />

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The `DisableOnAndroidDebug` Rule allows you to label certain rules to be disabled when debugging.

The most illustrative use case is for tests that make use of the `https://junit.org/junit4/javadoc/latest/org/junit/rules/Timeout.html` rule, when ran in debug mode the test may terminate on timeout abruptly during debugging. Developers may disable the timeout, or increase the timeout by making a code change on tests that need debugging and remember revert the change afterwards or rules such as `https://junit.org/junit4/javadoc/latest/org/junit/rules/Timeout.html` that may be disabled during debugging may be wrapped in a `
DisableOnDebug`.

The important benefit of this feature is that you can disable such rules without any making any modifications to your test class to remove them during debugging.

This does nothing to tackle timeouts or time sensitive code under test when debugging and may make this less useful in such circumstances.

Example usage:

```
public static class DisableTimeoutOnDebugSampleTest {

    @Rule
    public TestRule timeout = new DisableOnAndroidDebug(new Timeout(20));

    @Test
    public void myTest() {
        int i = 0;
        assertEquals(0, i); // suppose you had a break point here to inspect i
    }
}
```

## Summary

| ### Public constructors |
|---|
| `https://developer.android.com/reference/androidx/test/rule/DisableOnAndroidDebug#DisableOnAndroidDebug(org.junit.rules.TestRule)(https://junit.org/junit4/javadoc/latest/org/junit/rules/TestRule.html rule)` Wrap another `https://junit.org/junit4/javadoc/latest/org/junit/rules/TestRule.html` and conditionally disable it when a debugger is attached. |

| ### Public methods |
|---|---|
| `final https://junit.org/junit4/javadoc/latest/org/junit/runners/model/Statement.html` | `https://developer.android.com/reference/androidx/test/rule/DisableOnAndroidDebug#apply(org.junit.runners.model.Statement,org.junit.runner.Description)(https://junit.org/junit4/javadoc/latest/org/junit/runners/model/Statement.html base, https://junit.org/junit4/javadoc/latest/org/junit/runner/Description.html description)` |
| `boolean` | `https://developer.android.com/reference/androidx/test/rule/DisableOnAndroidDebug#isDebugging()()` Returns `true` if the VM has a debugger connected. |

## Public constructors

### DisableOnAndroidDebug

```
public DisableOnAndroidDebug(TestRule rule)
```

Wrap another `https://junit.org/junit4/javadoc/latest/org/junit/rules/TestRule.html` and conditionally disable it when a debugger is attached.

| Parameters |
|---|---|
| `https://junit.org/junit4/javadoc/latest/org/junit/rules/TestRule.html rule` | to disable during debugging |

## Public methods

### apply

```
public final Statement apply(Statement base, Description description)
```

### isDebugging

```
public boolean isDebugging()
```

Returns `true` if the VM has a debugger connected. This method may be used by test classes to take additional action to disable code paths that interfere with debugging if required.

| Returns |
|---|---|
| `boolean` | `true` if a debugger is connected, `false` otherwise |