## Summary of Changes in version 4.10 [unreleased!]

A full summary of commits between 4.9 and 4.10 is on github

### junit-dep has correct contents

junit-dep-4.9.jar incorrectly contained hamcrest classes, which could lead to version conflicts in projects that depend on hamcrest directly. This is fixed in 4.10 [@dsaff, closing gh-309]

### RuleChain

The RuleChain rule allows ordering of TestRules:

    public static class UseRuleChain {
        @Rule
        public TestRule chain= RuleChain
                               .outerRule(new LoggingRule("outer rule")
                               .around(new LoggingRule("middle rule")
                               .around(new LoggingRule("inner rule");

        @Test
        public void example() {
            assertTrue(true);
        }
    }

writes the log

    starting outer rule
    starting middle rule
    starting inner rule
    finished inner rule
    finished middle rule
    finished outer rule

### TemporaryFolder

- `TemporaryFolder#newFolder(String... folderNames)` creates recursively deep temporary folders [@rodolfoliviero, closing gh-283]
- `TemporaryFolder#newFile()` creates a randomly named new file, and `#newFolder()` creates a randomly named new folder [@Daniel Rothmaler, closing gh-299]

### Theories

The `Theories` runner does not anticipate theory parameters that have generic types, as reported by github#64. Fixing this won't happen until `Theories` is moved to junit-contrib. In anticipation of this, 4.9.1 adds some of the necessary machinery to the runner classes, and deprecates a method that only the `Theories` runner uses, `FrameworkMethod`#producesType(). The Common Public License that JUnit is released under is now included in the source repository.

Thanks to `@pholser` for identifying a potential resolution for github#64 and initiating work on it.

### Bug fixes

- Built-in Rules implementations
  - TemporaryFolder should not create files in the current working directory if applying the rule fails [@orfjackal, fixing gh-278]
  - TestWatcher and TestWatchman should not call failed for AssumptionViolatedExceptions [@stefanbirkner, fixing gh-296]
- Javadoc bugs
  - Assert documentation [@stefanbirkner, fixing gh-134]
  - ClassRule [@stefanbirkner, fixing gh-254]
  - Parameterized [@stefanbirkner, fixing gh-89]
  - Parameterized, again [@orfjackal, fixing gh-285]
- Miscellaneous
  - Useless code in RunAfters [@stefanbirkner, fixing gh-289]
  - Parameterized test classes should be able to have `@Category` annotations [@dsaff, fixing gh-291]
  - Error count should be initialized in junit.tests.framework.TestListenerTest [@stefanbirkner, fixing gh-225]
  - AssertionFailedError constructor shouldn't call super with null message [@stefanbirkner, fixing gh-318]
  - Clearer error message for non-static inner test classes [@stefanbirkner, fixing gh-42]

### Minor changes

- Description, Result and Failure are Serializable [@ephox-rob, closing gh-101]
- FailOnTimeout is reusable, allowing for retrying Rules [@stefanbirkner, closing gh-265]
- New `ErrorCollector.checkThat` overload, that allows you to specify a reason [@drothmaler, closing gh-300]