org.apache.tools.ant.taskdefs.optional.junit

Class JUnitTask

Implemented Interfaces:
Cloneable

public class JUnitTask
extends Task

Runs JUnit tests.

JUnit is a framework to create unit tests. It has been initially created by Erich Gamma and Kent Beck. JUnit can be found at http://www.junit.org.

JUnitTask can run a single specific JUnitTest using the test element. For example, the following target

   <target name="test-int-chars" depends="jar-test">
       <echo message="testing international characters"/>
       <junit printsummary="no" haltonfailure="yes" fork="false">
           <classpath refid="classpath"/>
           <formatter type="plain" usefile="false" />
           <test name="org.apache.ecs.InternationalCharTest" />
       </junit>
   </target>
 

runs a single junit test (org.apache.ecs.InternationalCharTest) in the current VM using the path with id classpath as classpath and presents the results formatted using the standard plain formatter on the command line.

This task can also run batches of tests. The batchtest element creates a BatchTest based on a fileset. This allows, for example, all classes found in directory to be run as testcases.

For example,

 <target name="run-tests" depends="dump-info,compile-tests" if="junit.present">
   <junit printsummary="no" haltonfailure="yes" fork="${junit.fork}">
     <jvmarg value="-classic"/>
     <classpath refid="tests-classpath"/>
     <sysproperty key="build.tests" value="${build.tests}"/>
     <formatter type="brief" usefile="false" />
     <batchtest>
       <fileset dir="${tests.dir}">
         <include name="**/*Test*" />
       </fileset>
     </batchtest>
   </junit>
 </target>
 

this target finds any classes with a test directory anywhere in their path (under the top ${tests.dir}, of course) and creates JUnitTest's for each one.

Of course, <junit> and <batch> elements can be combined for more complex tests. For an example, see the ant build.xml target run-tests (the second example is an edited version).

To spawn a new Java VM to prevent interferences between different testcases, you need to enable fork. A number of attributes and elements allow you to set up how this JVM runs.

Since:
Ant 1.2
See Also:
JUnitTest, BatchTest

Nested Class Summary

static class
JUnitTask.ForkMode
These are the different forking options
protected static class
JUnitTask.JUnitLogOutputStream
A stream handler for handling the junit task.
protected static class
JUnitTask.JUnitLogStreamHandler
A log stream handler for junit.
static class
JUnitTask.SummaryAttribute
Print summary enumeration values.
protected class
JUnitTask.TestResultHolder
A value class that contains thee result of a test.

Field Summary

static String
TESTLISTENER_PREFIX

Fields inherited from class org.apache.tools.ant.Task

target, taskName, taskType, wrapper

Fields inherited from class org.apache.tools.ant.ProjectComponent

description, location, project

Constructor Summary

JUnitTask()
Creates a new JUnitRunner and enables fork of a new Java VM.

Method Summary

protected void
actOnTestResult(int exitValue, boolean wasKilled, JUnitTest test, String name)
Logs information about failed tests, potentially stops processing (by throwing a BuildException) if a failure/error occurred or sets a property.
protected void
actOnTestResult(JUnitTask.TestResultHolder result, JUnitTest test, String name)
Logs information about failed tests, potentially stops processing (by throwing a BuildException) if a failure/error occurred or sets a property.
void
addAssertions(Assertions asserts)
Assertions to enable in this program (if fork=true)
protected boolean
addClasspathEntry(String resource)
Search for the given resource and add the directory or archive that contains it to the classpath.
void
addConfiguredSysproperty(Environment.Variable sysp)
Adds a system property that tests can access.
void
addEnv(Environment.Variable var)
Adds an environment variable; used when forking.
void
addFormatter(FormatterElement fe)
Add a new formatter to all tests of this task.
void
addSysproperty(Environment.Variable sysp)
Deprecated. since ant 1.6
void
addSyspropertyset(PropertySet sysp)
Adds a set of properties that will be used as system properties that tests can access.
void
addTest(JUnitTest test)
Add a new single testcase.
protected Enumeration
allTests()
return an enumeration listing each test, then each batchtest
BatchTest
createBatchTest()
Adds a set of tests based on pattern matching.
Path
createBootclasspath()
Adds a path to the bootclasspath.
Path
createClasspath()
Adds path to classpath used for tests.
Commandline.Argument
createJvmarg()
Adds a JVM argument; ignored if not forking.
Permissions
createPermissions()
Sets the permissions for the application run inside the same JVM.
protected ExecuteWatchdog
createWatchdog()
void
execute()
Runs the testcase.
protected void
execute(List tests)
Execute a list of tests in a single forked Java VM.
protected void
execute(JUnitTest arg)
Run the tests.
protected Collection
executeOrQueue(Enumeration testList, boolean runIndividual)
Executes all tests that don't need to be forked (or all tests if the runIndividual argument is true.
protected CommandlineJava
getCommandline()
Get the command line used to run the tests.
protected OutputStream
getDefaultOutput()
Get the default output for a formatter.
protected Enumeration
getIndividualTests()
Merge all individual tests from the batchtest with all individual tests and return an enumeration over all JUnitTest.
protected File
getOutput(FormatterElement fe, JUnitTest test)
If the formatter sends output to a file, return that file.
void
handleErrorFlush(String output)
Pass output sent to System.err to the TestRunner so it can collect it for the formatters.
void
handleErrorOutput(String output)
Pass output sent to System.err to the TestRunner so it can collect it for the formatters.
protected void
handleFlush(String output)
Pass output sent to System.out to the TestRunner so it can collect ot for the formatters.
protected int
handleInput(byte[] buffer, int offset, int length)
Handle an input request by this task.
protected void
handleOutput(String output)
Pass output sent to System.out to the TestRunner so it can collect ot for the formatters.
void
init()
Adds the jars or directories containing Ant, this task and JUnit to the classpath - this should make the forked JVM work without having to specify them directly.
void
setCloneVm(boolean cloneVm)
If set, system properties will be copied to the cloned VM - as well as the bootclasspath unless you have explicitly specified a bootclaspath.
void
setDir(File dir)
The directory to invoke the VM in.
void
setErrorProperty(String propertyName)
Property to set to "true" if there is a error in a test.
void
setFailureProperty(String propertyName)
Property to set to "true" if there is a failure in a test.
void
setFiltertrace(boolean value)
If true, smartly filter the stack frames of JUnit errors and failures before reporting them.
void
setFork(boolean value)
If true, JVM should be forked for each test.
void
setForkMode(JUnitTask.ForkMode mode)
Set the behavior when fork fork has been enabled.
void
setHaltonerror(boolean value)
If true, stop the build process when there is an error in a test.
void
setHaltonfailure(boolean value)
If true, stop the build process if a test fails (errors are considered failures as well).
void
setIncludeantruntime(boolean b)
If true, include ant.jar, optional.jar and junit.jar in the forked VM.
void
setJvm(String value)
The command used to invoke the Java Virtual Machine, default is 'java'.
void
setMaxmemory(String max)
Set the maximum memory to be used by all forked JVMs.
void
setNewenvironment(boolean newenv)
If true, use a new environment when forked.
void
setOutputToFormatters(boolean outputToFormatters)
If true, send any output generated by tests to the formatters.
void
setPrintsummary(JUnitTask.SummaryAttribute value)
If true, print one-line statistics for each test, or "withOutAndErr" to also show standard output and error.
void
setReloading(boolean value)
If true, force ant to re-classload all classes for each JUnit TestCase
void
setShowOutput(boolean showOutput)
If true, send any output generated by tests to Ant's logging system as well as to the formatters.
void
setTempdir(File tmpDir)
Where Ant should place temporary files.
void
setTimeout(Integer value)
Set the timeout value (in milliseconds).

Methods inherited from class org.apache.tools.ant.Task

bindToOwner, execute, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType

Methods inherited from class org.apache.tools.ant.ProjectComponent

clone, getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject

Field Details

TESTLISTENER_PREFIX

public static final String TESTLISTENER_PREFIX
Since:
Ant 1.7

Constructor Details

JUnitTask

public JUnitTask()
            throws Exception
Creates a new JUnitRunner and enables fork of a new Java VM.
Since:
Ant 1.2

Method Details

actOnTestResult

protected void actOnTestResult(int exitValue,
                               boolean wasKilled,
                               JUnitTest test,
                               String name)
Logs information about failed tests, potentially stops processing (by throwing a BuildException) if a failure/error occurred or sets a property.
Parameters:
exitValue - the exitValue of the test.
wasKilled - if true, the test had been killed.
test - the test in question.
name - the name of the test.
Since:
Ant 1.6.2

actOnTestResult

protected void actOnTestResult(JUnitTask.TestResultHolder result,
                               JUnitTest test,
                               String name)
Logs information about failed tests, potentially stops processing (by throwing a BuildException) if a failure/error occurred or sets a property.
Parameters:
result - the result of the test.
test - the test in question.
name - the name of the test.
Since:
Ant 1.7

addAssertions

public void addAssertions(Assertions asserts)
Assertions to enable in this program (if fork=true)
Parameters:
asserts - assertion set
Since:
Ant 1.6

addClasspathEntry

protected boolean addClasspathEntry(String resource)
Search for the given resource and add the directory or archive that contains it to the classpath.

Doesn't work for archives in JDK 1.1 as the URL returned by getResource doesn't contain the name of the archive.

Parameters:
resource - resource that one wants to lookup
Returns:
true if something was in fact added
Since:
Ant 1.4

addConfiguredSysproperty

public void addConfiguredSysproperty(Environment.Variable sysp)
Adds a system property that tests can access. This might be useful to tranfer Ant properties to the testcases when JVM forking is not enabled.
Parameters:
sysp - new environment variable to add
Since:
Ant 1.6

addEnv

public void addEnv(Environment.Variable var)
Adds an environment variable; used when forking.

Will be ignored if we are not forking a new VM.

Parameters:
var - environment variable to be added
Since:
Ant 1.5

addFormatter

public void addFormatter(FormatterElement fe)
Add a new formatter to all tests of this task.
Parameters:
fe - formatter element
Since:
Ant 1.2

addSysproperty

public void addSysproperty(Environment.Variable sysp)

Deprecated. since ant 1.6

Adds a system property that tests can access. This might be useful to tranfer Ant properties to the testcases when JVM forking is not enabled.
Parameters:
sysp - environment variable to add
Since:
Ant 1.3

addSyspropertyset

public void addSyspropertyset(PropertySet sysp)
Adds a set of properties that will be used as system properties that tests can access. This might be useful to tranfer Ant properties to the testcases when JVM forking is not enabled.
Parameters:
sysp - set of properties to be added
Since:
Ant 1.6

addTest

public void addTest(JUnitTest test)
Add a new single testcase.
Parameters:
test - a new single testcase
Since:
Ant 1.2
See Also:
JUnitTest

allTests

protected Enumeration allTests()
return an enumeration listing each test, then each batchtest
Returns:
enumeration
Since:
Ant 1.3

createBatchTest

public BatchTest createBatchTest()
Adds a set of tests based on pattern matching.
Returns:
a new instance of a batch test.
Since:
Ant 1.2
See Also:
BatchTest

createBootclasspath

public Path createBootclasspath()
Adds a path to the bootclasspath.
Returns:
reference to the bootclasspath in the embedded java command line
Since:
Ant 1.6

createClasspath

public Path createClasspath()
Adds path to classpath used for tests.
Returns:
reference to the classpath in the embedded java command line
Since:
Ant 1.2

createJvmarg

public Commandline.Argument createJvmarg()
Adds a JVM argument; ignored if not forking.
Returns:
create a new JVM argument so that any argument can be passed to the JVM.
Since:
Ant 1.2

createPermissions

public Permissions createPermissions()
Sets the permissions for the application run inside the same JVM.
Returns:
.
Since:
Ant 1.6

createWatchdog

protected ExecuteWatchdog createWatchdog()
            throws BuildException
Returns:
null if there is a timeout value, otherwise the watchdog instance.
Throws:
BuildException - under unspecified circumstances
Since:
Ant 1.2

execute

public void execute()
            throws BuildException
Runs the testcase.
Overrides:
execute in interface Task
Throws:
BuildException - in case of test failures or errors
Since:
Ant 1.2

execute

protected void execute(List tests)
            throws BuildException
Execute a list of tests in a single forked Java VM.
Parameters:
tests - the list of tests to execute.
Throws:
BuildException - on error.

execute

protected void execute(JUnitTest arg)
            throws BuildException
Run the tests.
Parameters:
arg - one JunitTest
Throws:
BuildException - in case of test failures or errors

executeOrQueue

protected Collection executeOrQueue(Enumeration testList,
                                    boolean runIndividual)
Executes all tests that don't need to be forked (or all tests if the runIndividual argument is true. Returns a collection of lists of tests that share the same VM configuration and haven't been executed yet.
Parameters:
testList - the list of tests to be executed or queued.
runIndividual - if true execute each test individually.
Returns:
a list of tasks to be executed.
Since:
1.6.2

getCommandline

protected CommandlineJava getCommandline()
Get the command line used to run the tests.
Returns:
the command line.
Since:
Ant 1.6.2

getDefaultOutput

protected OutputStream getDefaultOutput()
Get the default output for a formatter.
Returns:
default output stream for a formatter
Since:
Ant 1.3

getIndividualTests

protected Enumeration getIndividualTests()
Merge all individual tests from the batchtest with all individual tests and return an enumeration over all JUnitTest.
Returns:
enumeration over individual tests
Since:
Ant 1.3

getOutput

protected File getOutput(FormatterElement fe,
                         JUnitTest test)
If the formatter sends output to a file, return that file. null otherwise.
Parameters:
fe - formatter element
test - one JUnit test
Returns:
file reference
Since:
Ant 1.3

handleErrorFlush

public void handleErrorFlush(String output)
Pass output sent to System.err to the TestRunner so it can collect it for the formatters.
Overrides:
handleErrorFlush in interface Task
Parameters:
output - coming from System.err
Since:
Ant 1.5.2

handleErrorOutput

public void handleErrorOutput(String output)
Pass output sent to System.err to the TestRunner so it can collect it for the formatters.
Overrides:
handleErrorOutput in interface Task
Parameters:
output - output coming from System.err
Since:
Ant 1.5

handleFlush

protected void handleFlush(String output)
Pass output sent to System.out to the TestRunner so it can collect ot for the formatters.
Overrides:
handleFlush in interface Task
Parameters:
output - output coming from System.out
Since:
Ant 1.5.2

handleInput

protected int handleInput(byte[] buffer,
                          int offset,
                          int length)
            throws IOException
Handle an input request by this task.
Overrides:
handleInput in interface Task
Parameters:
buffer - the buffer into which data is to be read.
offset - the offset into the buffer at which data is stored.
length - the amount of data to read.
Returns:
the number of bytes read.
Since:
Ant 1.6

handleOutput

protected void handleOutput(String output)
Pass output sent to System.out to the TestRunner so it can collect ot for the formatters.
Overrides:
handleOutput in interface Task
Parameters:
output - output coming from System.out
Since:
Ant 1.5

init

public void init()
Adds the jars or directories containing Ant, this task and JUnit to the classpath - this should make the forked JVM work without having to specify them directly.
Overrides:
init in interface Task
Since:
Ant 1.4

setCloneVm

public void setCloneVm(boolean cloneVm)
If set, system properties will be copied to the cloned VM - as well as the bootclasspath unless you have explicitly specified a bootclaspath.

Doesn't have any effect unless fork is true.

Parameters:
cloneVm - a boolean value.
Since:
Ant 1.7

setDir

public void setDir(File dir)
The directory to invoke the VM in. Ignored if no JVM is forked.
Parameters:
dir - the directory to invoke the JVM from.
Since:
Ant 1.2

setErrorProperty

public void setErrorProperty(String propertyName)
Property to set to "true" if there is a error in a test.

This property is applied on all BatchTest (batchtest) and JUnitTest (test), however, it can possibly be overriden by their own properties.

Parameters:
propertyName - the name of the property to set in the event of an error.
Since:
Ant 1.4

setFailureProperty

public void setFailureProperty(String propertyName)
Property to set to "true" if there is a failure in a test.

This property is applied on all BatchTest (batchtest) and JUnitTest (test), however, it can possibly be overriden by their own properties.

Parameters:
propertyName - the name of the property to set in the event of an failure.
Since:
Ant 1.4

setFiltertrace

public void setFiltertrace(boolean value)
If true, smartly filter the stack frames of JUnit errors and failures before reporting them.

This property is applied on all BatchTest (batchtest) and JUnitTest (test) however it can possibly be overridden by their own properties.

Parameters:
value - false if it should not filter, otherwise true
Since:
Ant 1.5

setFork

public void setFork(boolean value)
If true, JVM should be forked for each test.

It avoids interference between testcases and possibly avoids hanging the build. this property is applied on all BatchTest (batchtest) and JUnitTest (test) however it can possibly be overridden by their own properties.

Parameters:
value - true if a JVM should be forked, otherwise false
Since:
Ant 1.2

setForkMode

public void setForkMode(JUnitTask.ForkMode mode)
Set the behavior when fork fork has been enabled.

Possible values are "once", "perTest" and "perBatch". If set to "once", only a single Java VM will be forked for all tests, with "perTest" (the default) each test will run in a fresh Java VM and "perBatch" will run all tests from the same <batchtest> in the same Java VM.

This attribute will be ignored if tests run in the same VM as Ant.

Only tests with the same configuration of haltonerror, haltonfailure, errorproperty, failureproperty and filtertrace can share a forked Java VM, so even if you set the value to "once", Ant may need to fork mutliple VMs.

Parameters:
mode - the mode to use.
Since:
Ant 1.6.2

setHaltonerror

public void setHaltonerror(boolean value)
If true, stop the build process when there is an error in a test. This property is applied on all BatchTest (batchtest) and JUnitTest (test) however it can possibly be overridden by their own properties.
Parameters:
value - true if it should halt, otherwise false
Since:
Ant 1.2

setHaltonfailure

public void setHaltonfailure(boolean value)
If true, stop the build process if a test fails (errors are considered failures as well). This property is applied on all BatchTest (batchtest) and JUnitTest (test) however it can possibly be overridden by their own properties.
Parameters:
value - true if it should halt, otherwise false
Since:
Ant 1.2

setIncludeantruntime

public void setIncludeantruntime(boolean b)
If true, include ant.jar, optional.jar and junit.jar in the forked VM.
Parameters:
b - include ant run time yes or no
Since:
Ant 1.5

setJvm

public void setJvm(String value)
The command used to invoke the Java Virtual Machine, default is 'java'. The command is resolved by java.lang.Runtime.exec(). Ignored if fork is disabled.
Parameters:
value - the new VM to use instead of java
Since:
Ant 1.2

setMaxmemory

public void setMaxmemory(String max)
Set the maximum memory to be used by all forked JVMs.
Parameters:
max - the value as defined by -mx or -Xmx in the java command line options.
Since:
Ant 1.2

setNewenvironment

public void setNewenvironment(boolean newenv)
If true, use a new environment when forked.

Will be ignored if we are not forking a new VM.

Parameters:
newenv - boolean indicating if setting a new environment is wished
Since:
Ant 1.5

setOutputToFormatters

public void setOutputToFormatters(boolean outputToFormatters)
If true, send any output generated by tests to the formatters.
Parameters:
outputToFormatters - if true, send output to formatters (Default is true).
Since:
Ant 1.7.0

setPrintsummary

public void setPrintsummary(JUnitTask.SummaryAttribute value)
If true, print one-line statistics for each test, or "withOutAndErr" to also show standard output and error. Can take the values on, off, and withOutAndErr.
Parameters:
value - true to print a summary, withOutAndErr to include the test's output as well, false otherwise.
Since:
Ant 1.2

setReloading

public void setReloading(boolean value)
If true, force ant to re-classload all classes for each JUnit TestCase
Parameters:
value - force class reloading for each test case

setShowOutput

public void setShowOutput(boolean showOutput)
If true, send any output generated by tests to Ant's logging system as well as to the formatters. By default only the formatters receive the output.

Output will always be passed to the formatters and not by shown by default. This option should for example be set for tests that are interactive and prompt the user to do something.

Parameters:
showOutput - if true, send output to Ant's logging system too
Since:
Ant 1.5

setTempdir

public void setTempdir(File tmpDir)
Where Ant should place temporary files.
Parameters:
tmpDir - location where temporary files should go to
Since:
Ant 1.6

setTimeout

public void setTimeout(Integer value)
Set the timeout value (in milliseconds).

If the test is running for more than this value, the test will be canceled. (works only when in 'fork' mode).

Parameters:
value - the maximum time (in milliseconds) allowed before declaring the test as 'timed-out'
Since:
Ant 1.2