# Package io.vertx.ext.unit.junit

- Class Summary
  Class | Description
  --- | ---
  RunTestOnContext | A JUnit rule that runs tests on a Vert.x context. When used as a `Rule` a new context is created for each tested method, the context will be same for the before and after method, but different for all the tested methods. When used as a `ClassRule`, a single context is created for all the tested method, the beforeClass and afterClass method will also executed in this context.
  Timeout | A rule for configuring the tests timeout.
  VertxUnitRunner | A JUnit runner for writing asynchronous tests.
  VertxUnitRunnerWithParameters |
  VertxUnitRunnerWithParametersFactory | A `ParametersRunnerFactory` for a `VertxUnitRunner` for enabling Vert.x Unit parameterized tests.

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