org.junit.platform.commons.support

Class ClassSupport

java.lang.Object

org.junit.platform.commons.support.ClassSupport

@API(status=MAINTAINED,
     since="1.1")
public final class ClassSupport
extends java.lang.Object

ClassSupport provides static utility methods for common tasks regarding classes — for example, generating a comma-separated list of fully qualified class names for a set of supplied classes.

TestEngine and extension authors are encouraged to use these supported methods in order to align with the behavior of the JUnit Platform.

Since:

1.1

See Also:

AnnotationSupport, ModifierSupport, ReflectionSupport

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ClassSupport()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	nullSafeToString(java.lang.Class<?>... classes) Generate a comma-separated list of fully qualified class names for the supplied classes.
static java.lang.String	nullSafeToString(java.util.function.Function<? super java.lang.Class<?>,? extends java.lang.String> mapper, java.lang.Class<?>... classes) Generate a comma-separated list of mapped values for the supplied classes.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassSupport

private ClassSupport()

Method Detail

nullSafeToString

public static java.lang.String nullSafeToString(java.lang.Class<?>... classes)

Generate a comma-separated list of fully qualified class names for the supplied classes.

Parameters:

classes - the classes whose names should be included in the generated string

Returns:

a comma-separated list of fully qualified class names, or an empty string if the supplied class array is null or empty

See Also:

nullSafeToString(Function, Class...)

nullSafeToString

public static java.lang.String nullSafeToString(java.util.function.Function<? super java.lang.Class<?>,? extends java.lang.String> mapper,
                                                java.lang.Class<?>... classes)

Generate a comma-separated list of mapped values for the supplied classes.

The values are generated by the supplied mapper (e.g., Class::getName, Class::getSimpleName, etc.), unless a class reference is null in which case it will be mapped to "null".

Parameters:

mapper - the mapper to use; never null

classes - the classes to map

Returns:

a comma-separated list of mapped values, or an empty string if the supplied class array is null or empty

See Also:

nullSafeToString(Class...)