Package org.assertj.core.api

Class NotThrownAssert

java.lang.Object

org.assertj.core.api.NotThrownAssert

All Implemented Interfaces:

Descriptable<NotThrownAssert>

public class NotThrownAssert
extends Object
implements Descriptable<NotThrownAssert>

Assertion class checking a ThrowableAssert.ThrowingCallable throws no exception.

The class itself does not do much, it delegates the work to ThrowableAssert after calling isThrownBy(ThrowingCallable).

Since:

3.17.0

See Also:

• ThrowableTypeAssert

Field Summary

Fields

Modifier and Type	Field	Description
protected Description	description

Constructor Summary

Constructors

Constructor	Description
NotThrownAssert()

Method Summary

Modifier and Type	Method	Description
NotThrownAssert	describedAs(Description description)	Sets the description of the assertion that is going to be called after.
void	isThrownBy(ThrowableAssert.ThrowingCallable code)	Assert that no exception of any type is thrown by the throwingCallable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.assertj.core.api.Descriptable

as, as, as, describedAs, describedAs

Field Details

description

protected Description description

Constructor Details

NotThrownAssert

public NotThrownAssert()

Method Details

isThrownBy

public void isThrownBy(ThrowableAssert.ThrowingCallable code)

Assert that no exception of any type is thrown by the throwingCallable.

Example:

assertThatNoException().isThrownBy(() -> { System.out.println("OK"); });

Parameters:

code - code not throwing any exception

Throws:

AssertionError - if the actual statement raised a Throwable.

describedAs

public NotThrownAssert describedAs(Description description)

Sets the description of the assertion that is going to be called after.

You must set it before calling the assertion otherwise it is ignored as the failing assertion breaks the chained call by throwing an AssertionError.

This overloaded version of "describedAs" offers more flexibility than the one taking a String by allowing users to pass their own implementation of a description. For example, a description that creates its value lazily, only when an assertion failure occurs.

Specified by:

describedAs in interface Descriptable<NotThrownAssert>

Parameters:

description - the new description to set.

Returns:

this object.