1 package org.apache.maven.surefire.providerapi;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import org.apache.maven.surefire.report.ReporterException;
23 import org.apache.maven.surefire.suite.RunResult;
24 import org.apache.maven.surefire.testset.TestSetFailedException;
25
26 import java.util.Iterator;
27
28 /**
29 * Interface to be implemented by all Surefire providers.
30 *
31 * NOTE: This class is part of the proposed public api for surefire providers for 2.7. It may
32 * still be subject to changes, even for minor revisions.
33 *
34 * The api covers this interface and all the types reachable from it. And nothing else.
35 *
36 * <p/>
37 * Called in one of three ways:
38 * Forkmode = never: getSuites is not called, invoke is called with null parameter
39 * Forkmode = once: getSuites is not called, invoke is called with null parameter
40 * Forkmode anything else: getSuites is called, invoke is called on new provider instance for each item in getSuites
41 * response.
42 *
43 * @author Kristian Rosenvold
44 */
45 public interface SurefireProvider
46 {
47 /**
48 * Determines the number of forks.
49 *
50 * Called when forkmode is different from "never" or "always", allows the provider to define
51 * how to behave for the fork.
52 *
53 * @return An iterator that will trigger one fork per item
54 */
55 Iterator getSuites();
56
57 /**
58 * Runs a forked test
59 * @param forkTestSet An item from the iterator in #getSuites. Will be null for forkmode never or always.
60 * When this is non-null, the forked process will run only that test
61 * and probably not scan the classpath
62 * @return A result of the invocation
63 * @throws org.apache.maven.surefire.report.ReporterException When reporting fails
64 * @throws org.apache.maven.surefire.testset.TestSetFailedException When testset fails
65 */
66
67 RunResult invoke( Object forkTestSet )
68 throws TestSetFailedException, ReporterException;
69
70 /**
71 * Makes an attempt at cancelling the current run, giving the provider a chance to notify
72 * reporting that the remaining tests have been cancelled due to timeout.
73 *
74 * If the provider thinks it can terminate properly it is the responsibility of
75 * the invoke method to return a RunResult with a booter code of failure.
76 *
77 * It is up to the provider to find out how to implement this method properly.
78 * A provider may also choose to not do anything at all in this method,
79 * which means surefire will kill the forked process soon afterwards anyway.
80 *
81 * Will be called on a different thread than the one calling invoke.
82 */
83 // Todo: Need to think a lot closer about how/if this works and if there is a use case for it.
84 // Killing a process is slightly non-deterministic
85 // And it
86 void cancel();
87 }