Aaron Digulla created SLF4J-461: ----------------------------------- Summary: JUnit Support Key: SLF4J-461 URL: https://jira.qos.ch/browse/SLF4J-461 Project: SLF4J Issue Type: New Feature Components: Unspecified Affects Versions: 1.8.0-beta4, 1.7.25 Reporter: Aaron Digulla Assignee: SLF4J developers list I would like to submit some code to help write unit tests that verify log behavior. Examples: * Make sure that some code correctly logs errors and warnings * The log messages contain the correct information (instead of, say, "[byte"). * Files are logged with absolute path * Remove (expected) stack traces from test output My code contains a class RedirectLogger which takes lists of classes or logger names and adds appenders to those which collect log events in a list. At the end of the test, you can call a dump() method (optionally with a filter) to get everything that was logged. Example code before Java 8: {code:java} RedirectLogger rl = new RedirectLogger(Tool.class, Util.class); try { rl.install(); tool.foo(); } finally { rl.deinstall(); } assertEquals("Expected log lines", rl.dump(Level.WARN)); {code} Example > Java 8 with method that returns value: {code:java} RedirectLogger rl = new RedirectLogger(Tool.class, Util.class); Type result = rl.with(() -> { return tool.bar(); }); assertEquals(..., result); assertEquals("Expected log lines", rl.dump(Level.WARN));{code} -- This message was sent by Atlassian JIRA (v7.3.1#73012)