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/*
* Copyright 2015-2020 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 org.junit.jupiter.engine.discovery;
import java.lang.reflect.Method;
import java.util.Optional;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.junit.platform.commons.util.Preconditions;
import org.junit.platform.commons.util.ReflectionUtils;
/**
* @since 5.0
*/
class MethodFinder {
// Pattern: methodName(comma-separated list of parameter type names)
private static final Pattern METHOD_PATTERN = Pattern.compile("(.+)\\((.*)\\)");
Optional findMethod(String methodSpecPart, Class clazz) {
Matcher matcher = METHOD_PATTERN.matcher(methodSpecPart);
Preconditions.condition(matcher.matches(),
() -> String.format("Method [%s] does not match pattern [%s]", methodSpecPart, METHOD_PATTERN));
String methodName = matcher.group(1);
String parameterTypeNames = matcher.group(2);
return ReflectionUtils.findMethod(clazz, methodName, parameterTypeNames);
}
}