org.assertj.core.api

Class ThrowableTypeAssert<T extends java.lang.Throwable>

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

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and 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.