org.assertj.core.util

Class Preconditions

java.lang.Object

org.assertj.core.util.Preconditions

public final class Preconditions
extends Object

Verifies correct argument values and state. Borrowed from Guava.

Author:

alruiz@google.com (Alex Ruiz)

Field Summary

Fields

Modifier and Type	Field and Description
static String	ARGUMENT_EMPTY

Method Summary

Methods

Modifier and Type	Method and Description
static <T> void	checkNotNull(FilterOperator<T> filterOperator) Verifies that the given FilterOperator reference is not null.
static <T> T	checkNotNull(T reference) Verifies that the given object reference is not null.
static <T> T	checkNotNull(T reference, String message) Verifies that the given object reference is not null.
static CharSequence	checkNotNullOrEmpty(CharSequence s) Verifies that the given CharSequence is not null or empty.
static CharSequence	checkNotNullOrEmpty(CharSequence s, String message) Verifies that the given CharSequence is not null or empty.
static <T> T[]	checkNotNullOrEmpty(T[] array) Verifies that the given array is not null or empty.

Methods inherited from class java.lang.Object

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

Field Detail

ARGUMENT_EMPTY

public static final String ARGUMENT_EMPTY

See Also:

Constant Field Values

Method Detail

checkNotNullOrEmpty

public static CharSequence checkNotNullOrEmpty(CharSequence s)

Verifies that the given CharSequence is not null or empty.

Parameters:

s - the given CharSequence.

Returns:

the validated CharSequence.

Throws:

NullPointerException - if the given CharSequence is null.

IllegalArgumentException - if the given CharSequence is empty.

checkNotNullOrEmpty

public static CharSequence checkNotNullOrEmpty(CharSequence s,
                               String message)

Verifies that the given CharSequence is not null or empty.

Parameters:

s - the given CharSequence.

message - error message in case of empty String.

Returns:

the validated CharSequence.

Throws:

NullPointerException - if the given CharSequence is null.

IllegalArgumentException - if the given CharSequence is empty.

checkNotNullOrEmpty

public static <T> T[] checkNotNullOrEmpty(T[] array)

Verifies that the given array is not null or empty.

Parameters:

array - the given array.

Returns:

the validated array.

Throws:

NullPointerException - if the given array is null.

IllegalArgumentException - if the given array is empty.

checkNotNull

public static <T> T checkNotNull(T reference)

Verifies that the given object reference is not null.

Parameters:

reference - the given object reference.

Returns:

the non-null reference that was validated.

Throws:

NullPointerException - if the given object reference is null.

checkNotNull

public static <T> T checkNotNull(T reference,
                 String message)

Verifies that the given object reference is not null.

Parameters:

reference - the given object reference.

message - error message in case of null reference.

Returns:

the non-null reference that was validated.

Throws:

NullPointerException - if the given object reference is null.

checkNotNull

public static <T> void checkNotNull(FilterOperator<T> filterOperator)

Verifies that the given FilterOperator reference is not null.

Parameters:

reference - the given object reference.

Throws:

NullPointerException - if the given object reference is null.