AMLSim / jars /junit5-r5.10.2 /documentation /src /test /java /example /MethodSourceParameterResolutionDemo.java
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/*
* Copyright 2015-2023 the original author or authors.
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v2.0 which
* accompanies this distribution and is available at
*
* https://www.eclipse.org/legal/epl-v20.html
*/
package example;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.params.provider.Arguments.arguments;
import java.util.stream.Stream;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.api.extension.ParameterContext;
import org.junit.jupiter.api.extension.ParameterResolver;
import org.junit.jupiter.api.extension.RegisterExtension;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
class MethodSourceParameterResolutionDemo {
// @formatter:off
// tag::parameter_resolution_MethodSource_example[]
@RegisterExtension
static final IntegerResolver integerResolver = new IntegerResolver();
@ParameterizedTest
@MethodSource("factoryMethodWithArguments")
void testWithFactoryMethodWithArguments(String argument) {
assertTrue(argument.startsWith("2"));
}
static Stream<Arguments> factoryMethodWithArguments(int quantity) {
return Stream.of(
arguments(quantity + " apples"),
arguments(quantity + " lemons")
);
}
static class IntegerResolver implements ParameterResolver {
@Override
public boolean supportsParameter(ParameterContext parameterContext,
ExtensionContext extensionContext) {
return parameterContext.getParameter().getType() == int.class;
}
@Override
public Object resolveParameter(ParameterContext parameterContext,
ExtensionContext extensionContext) {
return 2;
}
}
// end::parameter_resolution_MethodSource_example[]
// @formatter:on
}