Package org.hamcrest.text

Class IsBlankString

java.lang.Object

org.hamcrest.BaseMatcher<T>

org.hamcrest.TypeSafeMatcher<java.lang.String>

org.hamcrest.text.IsBlankString

All Implemented Interfaces:

Matcher<java.lang.String>, SelfDescribing

public final class IsBlankString
extends TypeSafeMatcher<java.lang.String>

Matches blank Strings (and null).

Field Summary

Fields

Modifier and Type	Field	Description
private static IsBlankString	BLANK_INSTANCE
private static Matcher<java.lang.String>	NULL_OR_BLANK_INSTANCE
private static java.util.regex.Pattern	REGEX_WHITESPACE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	IsBlankString()

Method Summary

Modifier and Type	Method	Description
static Matcher<java.lang.String>	blankOrNullString()	Creates a matcher of String that matches when the examined string is null, or contains zero or more whitespace characters and nothing else.
static Matcher<java.lang.String>	blankString()	Creates a matcher of String that matches when the examined string contains zero or more whitespace characters and nothing else.
void	describeTo(Description description)	Generates a description of the object.
boolean	matchesSafely(java.lang.String item)	Subclasses should implement this.

Methods inherited from class org.hamcrest.TypeSafeMatcher

describeMismatch, describeMismatchSafely, matches

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, isNotNull, toString

Methods inherited from class java.lang.Object

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

Field Detail

BLANK_INSTANCE

private static final IsBlankString BLANK_INSTANCE

NULL_OR_BLANK_INSTANCE

private static final Matcher<java.lang.String> NULL_OR_BLANK_INSTANCE

REGEX_WHITESPACE

private static final java.util.regex.Pattern REGEX_WHITESPACE

Constructor Detail

IsBlankString

private IsBlankString()

Method Detail

matchesSafely

public boolean matchesSafely(java.lang.String item)

Description copied from class: TypeSafeMatcher

Subclasses should implement this. The item will already have been checked for the specific type and will never be null.

Specified by:

matchesSafely in class TypeSafeMatcher<java.lang.String>

describeTo

public void describeTo(Description description)

Description copied from interface: SelfDescribing

Generates a description of the object. The description may be part of a a description of a larger object of which this is just a component, so it should be worded appropriately.

Parameters:

description - The description to be built or appended to.

blankString

public static Matcher<java.lang.String> blankString()

Creates a matcher of String that matches when the examined string contains zero or more whitespace characters and nothing else. For example:

assertThat("  ", is(blankString()))

blankOrNullString

public static Matcher<java.lang.String> blankOrNullString()

Creates a matcher of String that matches when the examined string is null, or contains zero or more whitespace characters and nothing else. For example:

assertThat(((String)null), is(blankOrNullString()))