IsEmptyString (Hamcrest)
Date: 2012-07-09

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## 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())

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