Package groovy.test

Class GroovyAssert

java.lang.Object
groovy.test.GroovyAssert
public class GroovyAssert extends Object

GroovyAssert contains a set of static assertion and test helper methods for JUnit 4+. They augment the kind of helper methods found in JUnit 4's Assert class. JUnit 3 users typically don't use these methods but instead, the equivalent methods in GroovyTestCase.

GroovyAssert methods can either be used by fully qualifying the static method like: 

     groovy.test.GroovyAssert.shouldFail { ... }
or by importing the static methods with one ore more static imports: 
     import static groovy.test.GroovyAssert.shouldFail

Backwards compatibility note: Prior to Groovy 4, GroovyAssert extended JUnit 4's Assert class. This meant that you could statically import static methods from that class via GroovyAssert, e.g.: 
     import static groovy.test.GroovyAssert.assertNotNull
This is generally regarded as a code smell since inheritance is primarily to do with instance methods. From Groovy 4, you should import such methods directly, e.g.: 
     import static org.junit.Assert.assertNotNull
Since:
2.3
See Also:

  • Field Details

  • Constructor Details

    • GroovyAssert

      public GroovyAssert()

  • Method Details

    • genericScriptName

      protected static String genericScriptName()
      Returns:
      a generic script name to be used by GroovyShell#evaluate.

    • assertScript

      public static void assertScript(String script)
      Asserts that the script runs without any exceptions
      Parameters:
      script - the script that should pass without any exception

    • assertScript

      public static void assertScript(GroovyShell shell, String script)
      Asserts that the script runs using the given shell without any exceptions
      Parameters:
      shell - the shell to use to evaluate the script
      script - the script that should pass without any exception

    • fail

      public static void fail(String message)

    • shouldFail

      public static Throwable shouldFail(String script)
      Asserts that the given script fails when evaluated.
      Parameters:
      script - the script expected to fail
      Returns:
      the caught exception
      Throws:
      AssertionError - if no failure

    • shouldFail

      public static Throwable shouldFail(GroovyShell shell, String script)
      Asserts that the given script fails when evaluated using the given shell.
      Parameters:
      shell - the shell to use to evaluate the script
      script - the script expected to fail
      Returns:
      the caught exception
      Throws:
      AssertionError - if no failure

    • shouldFail

      public static <T extends Throwable> T shouldFail(Class<T> clazz, String script)
      Asserts that the given script fails when evaluated and that a particular type of exception is thrown.
      Parameters:
      clazz - the class of the expected exception
      script - the script expected to fail
      Returns:
      the caught exception
      Throws:
      AssertionError - if no failure

    • shouldFail

      public static <T extends Throwable> T shouldFail(GroovyShell shell, Class<T> clazz, String script)
      Asserts that the given script fails when evaluated using the given shell and that a particular type of exception is thrown.
      Parameters:
      shell - the shell to use to evaluate the script
      clazz - the class of the expected exception
      script - the script expected to fail
      Returns:
      the caught exception
      Throws:
      AssertionError - if no failure

    • shouldFail

      public static Throwable shouldFail(Closure<?> code)
      Asserts that the given closure fails when executed.
      Parameters:
      code - the block expected to fail
      Returns:
      the caught exception
      Throws:
      AssertionError - if no failure

    • shouldFail

      public static <T extends Throwable> T shouldFail(Class<T> type, Closure<?> code)
      Asserts that the given closure fails when executed and that a particular type of exception is thrown.
      Parameters:
      type - the class of the expected exception
      code - the block expected to fail
      Returns:
      the caught exception
      Throws:
      AssertionError - if no failure

    • shouldFailWithCause

      public static <T extends Throwable> T shouldFailWithCause(Class<T> type, Closure<?> code)
      Asserts that the given closure fails when executed and that a particular exception type can be attributed to the cause. The expected exception is compared recursively with any nested exceptions using getCause() until either a match is found or no more nested exceptions exist.

      If a match is found, the matching exception is returned otherwise the method will fail.

      Parameters:
      type - the class of the expected nested exception
      code - the block expected to fail
      Returns:
      the cause
      Throws:
      AssertionError - if no failure

    • notYetImplemented

      public static boolean notYetImplemented(Object caller)
      Runs the calling JUnit test again and fails only if it unexpectedly runs.
      This is helpful for tests that don't currently work but should work one day, when the tested functionality has been implemented.

      The right way to use it for JUnit 3 is: 

       public void testXXX() {
   if (GroovyAssert.notYetImplemented(this)) return;
   ... the real (now failing) unit test
 }
      or for JUnit 4: 
       @Test
 public void XXX() {
   if (GroovyAssert.notYetImplemented(this)) return;
   ... the real (now failing) unit test
 }
      Idea copied from HtmlUnit (many thanks to Marc Guillemot). Future versions maybe available in the JUnit distribution.
      Returns:
      false when not itself already in the call stack
      Throws:
      AssertionError - if no exception
      See Also:

    • isAtLeastJdk

      public static boolean isAtLeastJdk(String specVersion)
      Returns:
      true if the JDK version is at least the version given by specVersion (e.g. "1.8", "9.0")
      Since:
      2.5.7