org.hamcrest.core
Class IsNull<T>
java.lang.Object
org.hamcrest.BaseMatcher<T>
org.hamcrest.core.IsNull<T>
- 所有已实现接口:
- org.hamcrest.Matcher<T>, org.hamcrest.SelfDescribing
public class IsNull<T>
- extends org.hamcrest.BaseMatcher<T>
Is the value null?
|
方法摘要 |
void |
describeTo(org.hamcrest.Description description)
Generates a description of the object. |
boolean |
matches(Object o)
Evaluates the matcher for argument item. |
static
<T> org.hamcrest.Matcher<T> |
notNullValue()
Matches if value is not null. |
static
<T> org.hamcrest.Matcher<T> |
notNullValue(Class<T> type)
Matches if value is not null. |
static
<T> org.hamcrest.Matcher<T> |
nullValue()
Matches if value is null. |
static
<T> org.hamcrest.Matcher<T> |
nullValue(Class<T> type)
Matches if value is null. |
| 类方法继承： org.hamcrest.BaseMatcher |
_dont_implement_Matcher___instead_extend_BaseMatcher_, toString |
IsNull
public IsNull()
matches
public boolean matches(Object o)
- Description copied from interface:
org.hamcrest.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.
- 参数:
o - the object against which the matcher is evaluated.
- 返回:
true if item matches, otherwise false.- 另请参见:
BaseMatcher
describeTo
public void describeTo(org.hamcrest.Description description)
- Description copied from interface:
org.hamcrest.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.
- 参数:
description - The description to be built or appended to.
nullValue
public static <T> org.hamcrest.Matcher<T> nullValue()
- Matches if value is null.
notNullValue
public static <T> org.hamcrest.Matcher<T> notNullValue()
- Matches if value is not null.
nullValue
public static <T> org.hamcrest.Matcher<T> nullValue(Class<T> type)
- Matches if value is null. With type inference.
notNullValue
public static <T> org.hamcrest.Matcher<T> notNullValue(Class<T> type)
- Matches if value is not null. With type inference.