org.scijava.test
Class TestUtils

java.lang.Object
  org.scijava.test.TestUtils

public class TestUtils
extends Object

A bunch of helpful functions for unit tests.

Author:

Johannes Schindelin, Curtis Rueden

Constructor Summary

TestUtils()

Method Summary

static File	createPath(File parent, String path) Creates an empty file at the given path, creating intermediate directories as necessary.
static File	createTemporaryDirectory(String prefix) Makes a temporary directory for use with unit tests.
static File	createTemporaryDirectory(String prefix, Class<?> forClass) Makes a temporary directory for use with unit tests.
static File	createTemporaryDirectory(String prefix, Class<?> forClass, String suffix) Makes a temporary directory for use with unit tests.
static Class<?>	getCallingClass(Class<?> excluding) Returns the class of the caller (excluding the specified class).
static Map.Entry<Class<?>,String>	getCallingCodeLocation(Class<?> excluding) Returns the class and the method/line number of the caller (excluding the specified class).

Methods inherited from class java.lang.Object

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

Constructor Detail

TestUtils

public TestUtils()

Method Detail

createPath

public static File createPath(File parent,
                              String path)
                       throws IOException

Creates an empty file at the given path, creating intermediate directories as necessary.

Parameters:

parent - The parent directory of the relative path.

path - The forward-slash-separated path to create.

Returns:

a File pointing at the newly created empty path.

Throws:

IOException - if the file cannot be created.

createTemporaryDirectory

public static File createTemporaryDirectory(String prefix)
                                     throws IOException

Makes a temporary directory for use with unit tests.

When the unit test runs in a Maven context, the temporary directory will be created in the target/ directory corresponding to the calling class instead of /tmp/.

Parameters:

prefix - the prefix for the directory's name

Returns:

the reference to the newly-created temporary directory

Throws:

IOException

createTemporaryDirectory

public static File createTemporaryDirectory(String prefix,
                                            Class<?> forClass)
                                     throws IOException

Makes a temporary directory for use with unit tests.

When the unit test runs in a Maven context, the temporary directory will be created in the corresponding target/ directory instead of /tmp/.

Parameters:

prefix - the prefix for the directory's name

forClass - the class for context (to determine whether there's a target/ directory)

Returns:

the reference to the newly-created temporary directory

Throws:

IOException

createTemporaryDirectory

public static File createTemporaryDirectory(String prefix,
                                            Class<?> forClass,
                                            String suffix)
                                     throws IOException

Makes a temporary directory for use with unit tests.

When the unit test runs in a Maven context, the temporary directory will be created in the corresponding target/ directory instead of /tmp/.

Parameters:

prefix - the prefix for the directory's name

forClass - the class for context (to determine whether there's a target/ directory)

suffix - the suffix for the directory's name

Returns:

the reference to the newly-created temporary directory

Throws:

IOException

getCallingClass

public static Class<?> getCallingClass(Class<?> excluding)

Returns the class of the caller (excluding the specified class).

Sometimes it is convenient to determine the caller's context, e.g. to determine whether running in a maven-surefire-plugin context (in which case the location of the caller's class would end in target/test-classes/).

Parameters:

excluding - the class to exclude (or null)

Returns:

the class of the caller

getCallingCodeLocation

public static Map.Entry<Class<?>,String> getCallingCodeLocation(Class<?> excluding)

Returns the class and the method/line number of the caller (excluding the specified class).

Sometimes it is convenient to determine the caller's context, e.g. to determine whether running in a maven-surefire-plugin context (in which case the location of the caller's class would end in target/test-classes/).

Parameters:

excluding - the class to exclude (or null)

Returns:

the class of the caller and the method and line number