Packages

c

com.twitter.inject.app.console

ConsoleWriter

class ConsoleWriter extends AnyRef

A test-friendly wrapper for the standard system output streams (System.out, System.err).

Ex:

class MyApp extends App {
  def run(): Unit = {
    val console = injector.instance[ConsoleWriter]
    console.out.println("Hello, World!")
  }
}
Note

Using the ConsoleWriter is preferred for testing because its state can be locally overridden/bound, where as using System.setOut() or System.setErr() modifies global state of the JVM, which may result in flaky tests.

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  6. final def eq(arg0: AnyRef): Boolean
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  8. val err: PrintStream
  9. def finalize(): Unit
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  10. final def getClass(): Class[_]
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  11. def hashCode(): Int
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  12. final def isInstanceOf[T0]: Boolean
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  13. def let[T](f: ⇒ T): T

    Let this ConsoleWriter's out and error streams be used to scope the scala Console.

    Let this ConsoleWriter's out and error streams be used to scope the scala Console.

    Note

    This does not impact or change the global Java System.out or System.err, nor does it currently impact the behavior of installed/configured Loggers.

  14. final def ne(arg0: AnyRef): Boolean
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  15. final def notify(): Unit
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    @native()
  16. final def notifyAll(): Unit
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    @native()
  17. val out: PrintStream
  18. final def synchronized[T0](arg0: ⇒ T0): T0
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  19. def toString(): String
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  20. final def wait(): Unit
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  21. final def wait(arg0: Long, arg1: Int): Unit
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  22. final def wait(arg0: Long): Unit
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