ThrowableTypeAssert

java.lang.Object
- org.assertj.core.api.ThrowableTypeAssert<T>

Type Parameters:

T - type of throwable to be thrown.
```
public class ThrowableTypeAssert<T extends java.lang.Throwable>
extends java.lang.Object
```
Assertion class checking Throwable type.
The class itself does not do much, it delegates the work to ThrowableAssertAlternative after calling isThrownBy(ThrowableAssert.ThrowingCallable).

Field Summary

Fields
Modifier and Type Field Description

(package private) java.lang.Class<? extends T> expectedThrowableType

Constructor Summary

Constructors
Constructor Description

ThrowableTypeAssert(java.lang.Class<? extends T> throwableType)
Default constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ThrowableAssertAlternative<T>`	`isThrownBy(ThrowableAssert.ThrowingCallable throwingCallable)`	Assert that an exception of type T is thrown by the `throwingCallable` and allow to chain assertions on the thrown exception.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - expectedThrowableType
```
final java.lang.Class<? extends T extends java.lang.Throwable> expectedThrowableType
```
- Constructor Detail
  - ThrowableTypeAssert
```
ThrowableTypeAssert(java.lang.Class<? extends T> throwableType)
```
    Default constructor.
    
    Parameters:
    
    throwableType - class representing the target (expected) exception.
- Method Detail
  - isThrownBy
```
public ThrowableAssertAlternative<T> isThrownBy(ThrowableAssert.ThrowingCallable throwingCallable)
```
    Assert that an exception of type T is thrown by the throwingCallable and allow to chain assertions on the thrown exception.
    Example:
    assertThatExceptionOfType(IOException.class).isThrownBy(() -> { throw new IOException("boom!"); }) .withMessage("boom!");
    Parameters:
    
    throwingCallable - code throwing the exception of expected type
    
    Returns:
    
    return a ThrowableAssertAlternative.