TypeSafeDiagnosingMatcher (JUnit API 文档)

java.lang.Object
- org.hamcrest.BaseMatcher<T>
- - org.hamcrest.TypeSafeDiagnosingMatcher<T>

类型参数:
T -
所有已实现的接口:
Matcher<T>, SelfDescribing
直接已知子类:
CombinableMatcher, Every, FeatureMatcher, IsCollectionContaining
```
public abstract class TypeSafeDiagnosingMatcher<T>
extends BaseMatcher<T>
```
Convenient base class for Matchers that require a non-null value of a specific type and that will report why the received value has been rejected. This implements the null check, checks the type and then casts. To use, implement
```
matchesSafely()
```
.

构造器概要

构造器
限定符	构造器	说明
`protected`	`TypeSafeDiagnosingMatcher()`	The default constructor for simple sub types
`protected`	`TypeSafeDiagnosingMatcher(Class<?> expectedType)`	Use this constructor if the subclass that implements `matchesSafely` is not the class that binds <T> to a type.
`protected`