groovy.test

Class GroovyAssert

java.lang.Object

org.junit.Assert

groovy.test.GroovyAssert

public class GroovyAssert
extends Assert

GroovyAssert contains a set of static assertion and test helper methods and is supposed to be a Groovy extension of JUnit 4's Assert class. In case JUnit 3 is the choice, the GroovyTestCase is meant to be used for writing tests based on TestCase.

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
     import static groovy.test.GroovyAssert.assertNotNull
 

Since:

2.3

See Also:

GroovyTestCase

Field Summary

Fields

Modifier and Type	Field and Description
static String	TEST_SCRIPT_NAME_PREFIX

Constructor Summary

Constructors

Constructor and Description
GroovyAssert()

Method Summary

Modifier and Type	Method and Description
static void	assertScript(String script) Asserts that the script runs without any exceptions
protected static String	genericScriptName()
static boolean	isAtLeastJdk(String specVersion)
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.
static Throwable	shouldFail(Class clazz, Closure code) Asserts that the given code closure fails when it is evaluated and that a particular type of exception is thrown.
static Throwable	shouldFail(Class clazz, String script) Asserts that the given script fails when it is evaluated and that a particular type of exception is thrown.
static Throwable	shouldFail(Closure code) Asserts that the given code closure fails when it is evaluated
static Throwable	shouldFail(String script) Asserts that the given script fails when it is evaluated
static Throwable	shouldFailWithCause(Class expectedCause, Closure code) Asserts that the given code closure fails when it is evaluated and that a particular Exception type can be attributed to the cause.

Methods inherited from class org.junit.Assert

assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertArrayEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotEquals, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertThat, assertThat, assertThrows, assertThrows, assertTrue, assertTrue, fail, fail

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TEST_SCRIPT_NAME_PREFIX

public static final String TEST_SCRIPT_NAME_PREFIX

See Also:

Constant Field Values

Constructor Detail

GroovyAssert

public GroovyAssert()

Method Detail

genericScriptName

protected static String genericScriptName()

Returns:

a generic script name to be used by GroovyShell#evaluate calls.

assertScript

public static void assertScript(String script)
                         throws Exception

Asserts that the script runs without any exceptions

Parameters:

script - the script that should pass without any exception thrown

Throws:

Exception

shouldFail

public static Throwable shouldFail(Closure code)

Asserts that the given code closure fails when it is evaluated

Parameters:

code - the code expected to fail

Returns:

the caught exception

shouldFail

public static Throwable shouldFail(Class clazz,
                                   Closure code)

Asserts that the given code closure fails when it is evaluated and that a particular type of exception is thrown.

Parameters:

clazz - the class of the expected exception

code - the closure that should fail

Returns:

the caught exception

shouldFailWithCause

public static Throwable shouldFailWithCause(Class expectedCause,
                                            Closure code)

Asserts that the given code closure fails when it is evaluated and that a particular Exception type can be attributed to the cause. The expected exception class 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:

expectedCause - the class of the expected exception

code - the closure that should fail

Returns:

the cause

shouldFail

public static Throwable shouldFail(Class clazz,
                                   String script)

Asserts that the given script fails when it is evaluated and that a particular type of exception is thrown.

Parameters:

clazz - the class of the expected exception

script - the script that should fail

Returns:

the caught exception

shouldFail

public static Throwable shouldFail(String script)

Asserts that the given script fails when it is evaluated

Parameters:

script - the script expected to fail

Returns:

the caught exception

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

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