ErrorLogMuter (Solr 9.0.0 test-framework API)

java.lang.Object
- org.apache.solr.util.ErrorLogMuter

All Implemented Interfaces:

Closeable, AutoCloseable
```
public final class ErrorLogMuter
extends Object
implements Closeable, AutoCloseable
```
Helper code for "Muting" ERROR log messages that you expect as a result of the things you are testing, so they aren't a distraction in test logs. Example usage... try (ErrorLogMuter errors = ErrorLogMuter.substring("nullfirst")) { assertQEx( "invalid query format", req( "q","id_i:1000", "sort", "nullfirst" ), 400 ); assertEquals(1, errors.getCount()); }
ERROR messages are considered a match if their input matches either the message String, or the toString of an included Throwable, or any of the recursive Throwable.getCause()es of an included Throwable.
Matching ERROR messages are "muted" by filtering them out of the ROOT logger. Any Appenders attached to more specific Loggers may still include these "muted" ERRROR messages.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`
`int`	`getCount()`	The number of ERROR messages muted (by this instance) so far in it's lifecycle.
`static ErrorLogMuter`	`regex(String regex)`	Mutes ERROR log messages that partially match the specified regex.
`static ErrorLogMuter`	`regex(Pattern pat)`	Mutes ERROR log messages that partially match the specified regex.
`static ErrorLogMuter`	`substring(String substr)`	Mutes ERROR log messages that contain the input as a substring

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - substring
```
public static ErrorLogMuter substring(String substr)
```
    Mutes ERROR log messages that contain the input as a substring
  - regex
```
public static ErrorLogMuter regex(String regex)
```
    Mutes ERROR log messages that partially match the specified regex.
    
    See Also:
    
    Matcher.find()
  - regex
```
public static ErrorLogMuter regex(Pattern pat)
```
    Mutes ERROR log messages that partially match the specified regex.
    
    See Also:
    
    Matcher.find()
  - getCount
```
public int getCount()
```
    The number of ERROR messages muted (by this instance) so far in it's lifecycle. This number may be less then the number of ERROR messages expected if multiple ErrorLogMuter objects are in use which match the same ERROR log messages
  - close
```
public void close()
```
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable