Annotation Type InstancioSource

@Target({ANNOTATION_TYPE,METHOD})
@Retention(RUNTIME)
@Documented
@ArgumentsSource(org.instancio.junit.internal.InstancioSourceArgumentsProvider.class)
public @interface InstancioSource

Provides arguments for @ParameterizedTest methods, supporting multiple arguments per test run. Each argument will be a fully-populated instance generated by Instancio.

Example usage:

 @ExtendWith(InstancioExtension.class)
 class ExampleTest {
     @ParameterizedTest
     @InstancioSource(samples = 3)
     void someTestMethod(String s, int n, Person person) {
         // ... use generated arguments
     }
 }
 

The above example will run the test method 3 times, each time with a different set of arguments: a random string, a random integer, and a randomly populated instance of the Person class.

Since:

1.1.8

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
int	samples	Specifies the number of times to run the test, generating a new set of arguments each time.

Element Details

samples

@ExperimentalApi
int samples

Specifies the number of times to run the test, generating a new set of arguments each time.

The default value is 0, which means the number will be determined from the Keys.INSTANCIO_SOURCE_SAMPLES setting.

Returns:

the number of samples to generate

Since:

5.0.0

Default:

0