org.hamcrest.text
Class IsEmptyString

java.lang.Object
  org.hamcrest.BaseMatcher<java.lang.String>
      org.hamcrest.text.IsEmptyString

All Implemented Interfaces:

Matcher<java.lang.String>, SelfDescribing

public final class IsEmptyString
extends BaseMatcher<java.lang.String>

Matches empty Strings (and null).

Constructor Summary

IsEmptyString()

Method Summary

void	describeTo(Description description) Generates a description of the object.
static Matcher<java.lang.String>	isEmptyOrNullString() Creates a matcher of String that matches when the examined string is null, or has zero length.
static Matcher<java.lang.String>	isEmptyString() Creates a matcher of String that matches when the examined string has zero length.
boolean	matches(java.lang.Object item) Evaluates the matcher for argument item.

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, describeMismatch, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

IsEmptyString

public IsEmptyString()

Method Detail

matches

public boolean matches(java.lang.Object item)

Description copied from interface: Matcher

Evaluates the matcher for argument item.

This method matches against Object, instead of the generic type T. This is because the caller of the Matcher does not know at runtime what the type is (because of type erasure with Java generics). It is down to the implementations to check the correct type.

Parameters:

item - the object against which the matcher is evaluated.

Returns:

true if item matches, otherwise false.

See Also:

BaseMatcher

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.

isEmptyString

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

Creates a matcher of String that matches when the examined string has zero length.

For example:

assertThat("", isEmptyString())

isEmptyOrNullString

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

Creates a matcher of String that matches when the examined string is null, or has zero length.

For example:

assertThat(((String)null), isEmptyString())