Fix port documentation for JoobyTest

Commit 0ef1237 changed the random port
behavior for methods.

Author: froque

docs/asciidoc/testing.adoc

@@ -345,13 +345,7 @@ Simple and easy {love}!
 
 The javadoc:JoobyTest[] takes care of start and stop the application.
 
-Adding the annotation at class-level starts a single application before running tests and stop it 
-after all them. The default port at class level is: `8911`.
-
-Adding the annotation at method-level starts an application before running the test and stop it
-once it finish. The default port at method level is `random`.
-
-Default application port can be configured directly using the javadoc:JoobyTest[port] method:
+The default port is: `8911`. Application port can be configured directly using the javadoc:JoobyTest[port] method:
 
 `@JoobyTest(value = App.class, port = 9999)`
 

modules/jooby-test/src/main/java/io/jooby/test/JoobyTest.java

@@ -113,11 +113,9 @@
   String environment() default "test";
 
   /**
-   * Server port. At class level default port is <code>8911</code>. At method level default port is
-   * random.
+   * Server port. The default port is <code>8911</code>. Use <code>0</code> for random port.
    *
-   * @return Server port. At class level default port is <code>8911</code>. At method level default
-   *     port is random.
+   * @return Server port. The default port is <code>8911</code>.
    */
   int port() default -1;