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package org.junit.experimental.theories;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Annotating an array or iterable-typed field or method with @DataPoints
* will cause the values in the array or iterable given to be used as potential
* parameters for theories in that class when run with the
* {@link org.junit.experimental.theories.Theories Theories} runner.
*
* DataPoints will only be considered as potential values for parameters for
* which their types are assignable. When multiple sets of DataPoints exist with
* overlapping types more control can be obtained by naming the DataPoints using
* the value of this annotation, e.g. with
* @DataPoints({"dataset1", "dataset2"})
, and then specifying
* which named set to consider as potential values for each parameter using the
* {@link org.junit.experimental.theories.FromDataPoints @FromDataPoints}
* annotation.
*
* Parameters with no specified source (i.e. without @FromDataPoints or
* other {@link org.junit.experimental.theories.ParametersSuppliedBy
* @ParameterSuppliedBy} annotations) will use all DataPoints that are
* assignable to the parameter type as potential values, including named sets of
* DataPoints.
*
* DataPoints methods whose array types aren't assignable from the target
* parameter type (and so can't possibly return relevant values) will not be
* called when generating values for that parameter. Iterable-typed datapoints
* methods must always be called though, as this information is not available
* here after generic type erasure, so expensive methods returning iterable
* datapoints are a bad idea.
*
*
* @DataPoints
* public static String[] dataPoints = new String[] { ... };
*
* @DataPoints
* public static String[] generatedDataPoints() {
* return new String[] { ... };
* }
*
* @Theory
* public void theoryMethod(String param) {
* ...
* }
*
*
* @see org.junit.experimental.theories.Theories
* @see org.junit.experimental.theories.Theory
* @see org.junit.experimental.theories.DataPoint
* @see org.junit.experimental.theories.FromDataPoints
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ FIELD, METHOD })
public @interface DataPoints {
String[] value() default {};
Class extends Throwable>[] ignoredExceptions() default {};
}