anchor.diff:  
   ===== Bug Fixes
   
  -* Trailing spaces in a `@CsvSource` or `@CsvFileSource` input line no longer yield `null`
  -  values.
  -* `@EnableRuleMigrationSupport` previously failed to recognize `@Rule` methods that
  -  returned a subtype of one of the supported `TestRule` types. Moreover, it mistakenly
  -  instantiated some rules declared using methods multiple times. Now, once enabled, it
  -  will instantiate all declared rules (fields _and_ methods) exactly once and call them
  -  in the same order used by JUnit 4.
  -* Previously, disabled test classes were eagerly instantiated when `Lifecycle.PER_CLASS`
  -  was used. Now, `ExecutionCondition` evaluation always takes place before test class
  -  instantiation.
  -* The `junit-jupiter-migrationsupport` module no longer incorrectly attempts to register
  -  the `JupiterTestEngine` via the `ServiceLoader` mechanism, thereby allowing it to be
  -  used as a module on the Java 9 module-path.
  +* ❓
   
   ===== Deprecations and Breaking Changes
   
  
positive.code: 
  ===== New Features and Improvements
  
  * Failure messages for `assertTrue()` and `assertFalse()` in the `Assertions` class now
    include details about the expected and actual boolean values.
    - For example, the generated failure message for a call to `assertTrue(false)` is now
      "expected: <true> but was: <false>" instead of an empty string.
  * If a parameterized test does not consume all arguments supplied to it via argument
    sources, the unconsumed arguments are no longer included in the display name.
  * New `getOrComputeIfAbsent(Class)` convenience method in `ExtensionContext.Store` that
    simplifies use cases where an extension wishes to store a single object of a given type
    (keyed by that type) in the `Store` and the object is created using the default
  
negative.code: * New console launcher option `--scan-modules` for scanning all resolved Java 9
    modules available on the boot layer configuration for test discovery.
    - This is an alternative to the existing classpath scanning support.
  
  
  [[release-notes-5.1.0-junit-jupiter]]
  