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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.graph;
20  
21  import java.io.File;
22  import java.util.ArrayList;
23  import java.util.Arrays;
24  import java.util.Collection;
25  import java.util.List;
26  import java.util.Map;
27  import java.util.stream.Collectors;
28  import java.util.stream.Stream;
29  
30  import org.apache.maven.MavenExecutionException;
31  import org.apache.maven.execution.BuildResumptionDataRepository;
32  import org.apache.maven.execution.MavenExecutionRequest;
33  import org.apache.maven.execution.MavenSession;
34  import org.apache.maven.execution.ProjectActivation;
35  import org.apache.maven.execution.ProjectDependencyGraph;
36  import org.apache.maven.model.Dependency;
37  import org.apache.maven.model.Parent;
38  import org.apache.maven.model.building.Result;
39  import org.apache.maven.model.locator.DefaultModelLocator;
40  import org.apache.maven.model.locator.ModelLocator;
41  import org.apache.maven.project.MavenProject;
42  import org.apache.maven.project.ProjectBuilder;
43  import org.apache.maven.project.ProjectBuildingException;
44  import org.apache.maven.project.ProjectBuildingRequest;
45  import org.apache.maven.project.ProjectBuildingResult;
46  import org.apache.maven.project.collector.DefaultProjectsSelector;
47  import org.apache.maven.project.collector.MultiModuleCollectionStrategy;
48  import org.apache.maven.project.collector.PomlessCollectionStrategy;
49  import org.apache.maven.project.collector.ProjectsSelector;
50  import org.apache.maven.project.collector.RequestPomCollectionStrategy;
51  import org.junit.jupiter.api.BeforeEach;
52  import org.junit.jupiter.api.Test;
53  import org.junit.jupiter.params.ParameterizedTest;
54  import org.junit.jupiter.params.provider.Arguments;
55  import org.junit.jupiter.params.provider.MethodSource;
56  
57  import static java.util.Arrays.asList;
58  import static java.util.Collections.emptyList;
59  import static java.util.Collections.singletonList;
60  import static java.util.function.Function.identity;
61  import static java.util.stream.Collectors.toList;
62  import static org.apache.maven.execution.MavenExecutionRequest.REACTOR_MAKE_DOWNSTREAM;
63  import static org.apache.maven.execution.MavenExecutionRequest.REACTOR_MAKE_UPSTREAM;
64  import static org.apache.maven.graph.DefaultGraphBuilderTest.ScenarioBuilder.scenario;
65  import static org.assertj.core.api.Assertions.assertThat;
66  import static org.junit.jupiter.api.Assertions.assertEquals;
67  import static org.mockito.ArgumentMatchers.any;
68  import static org.mockito.ArgumentMatchers.anyBoolean;
69  import static org.mockito.ArgumentMatchers.anyList;
70  import static org.mockito.Mockito.mock;
71  import static org.mockito.Mockito.when;
72  
73  class DefaultGraphBuilderTest {
74      /*
75      The multi-module structure in this project is displayed as follows:
76  
77      module-parent
78      └─── module-independent     (without parent declaration)
79           module-a
80           module-b               (depends on module-a)
81           module-c
82           └─── module-c-1
83                module-c-2        (depends on module-b)
84           module-d               (packaging is bom)
85       */
86      private static final String GROUP_ID = "unittest";
87      private static final String PARENT_MODULE = "module-parent";
88      private static final String INDEPENDENT_MODULE = "module-independent";
89      private static final String MODULE_A = "module-a";
90      private static final String MODULE_B = "module-b";
91      private static final String MODULE_C = "module-c";
92      private static final String MODULE_D = "module-d";
93      private static final String MODULE_C_1 = "module-c-1";
94      private static final String MODULE_C_2 = "module-c-2";
95  
96      private DefaultGraphBuilder graphBuilder;
97  
98      private final ProjectBuilder projectBuilder = mock(ProjectBuilder.class);
99      private final MavenSession session = mock(MavenSession.class);
100     private final MavenExecutionRequest mavenExecutionRequest = mock(MavenExecutionRequest.class);
101 
102     private final ProjectsSelector projectsSelector = new DefaultProjectsSelector(projectBuilder);
103 
104     // Not using mocks for these strategies - a mock would just copy the actual implementation.
105 
106     private final ModelLocator modelLocator = new DefaultModelLocator();
107     private final PomlessCollectionStrategy pomlessCollectionStrategy = new PomlessCollectionStrategy(projectBuilder);
108     private final MultiModuleCollectionStrategy multiModuleCollectionStrategy =
109             new MultiModuleCollectionStrategy(modelLocator, projectsSelector);
110     private final RequestPomCollectionStrategy requestPomCollectionStrategy =
111             new RequestPomCollectionStrategy(projectsSelector);
112 
113     private Map<String, MavenProject> artifactIdProjectMap;
114 
115     public static Stream<Arguments> parameters() {
116         return Stream.of(
117                 scenario("Full reactor in order")
118                         .expectResult(
119                                 PARENT_MODULE,
120                                 MODULE_C,
121                                 MODULE_C_1,
122                                 MODULE_A,
123                                 MODULE_B,
124                                 MODULE_C_2,
125                                 INDEPENDENT_MODULE),
126                 scenario("Selected project").activeRequiredProjects(MODULE_B).expectResult(MODULE_B),
127                 scenario("Selected aggregator project (including child modules)")
128                         .activeRequiredProjects(MODULE_C)
129                         .expectResult(MODULE_C, MODULE_C_1, MODULE_C_2),
130                 scenario("Selected aggregator project with non-recursive")
131                         .activeRequiredProjects(MODULE_C)
132                         .nonRecursive()
133                         .expectResult(MODULE_C),
134                 scenario("Selected optional project")
135                         .activeOptionalProjects(MODULE_B)
136                         .expectResult(MODULE_B),
137                 scenario("Selected missing optional project")
138                         .activeOptionalProjects("non-existing-module")
139                         .expectResult(
140                                 PARENT_MODULE,
141                                 MODULE_C,
142                                 MODULE_C_1,
143                                 MODULE_A,
144                                 MODULE_B,
145                                 MODULE_C_2,
146                                 INDEPENDENT_MODULE),
147                 scenario("Selected missing optional and required project")
148                         .activeOptionalProjects("non-existing-module")
149                         .activeRequiredProjects(MODULE_B)
150                         .expectResult(MODULE_B),
151                 scenario("Excluded project")
152                         .inactiveRequiredProjects(MODULE_B)
153                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_C_1, MODULE_A, MODULE_C_2, INDEPENDENT_MODULE),
154                 scenario("Excluded optional project")
155                         .inactiveOptionalProjects(MODULE_B)
156                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_C_1, MODULE_A, MODULE_C_2, INDEPENDENT_MODULE),
157                 scenario("Excluded missing optional project")
158                         .inactiveOptionalProjects("non-existing-module")
159                         .expectResult(
160                                 PARENT_MODULE,
161                                 MODULE_C,
162                                 MODULE_C_1,
163                                 MODULE_A,
164                                 MODULE_B,
165                                 MODULE_C_2,
166                                 INDEPENDENT_MODULE),
167                 scenario("Excluded missing optional and required project")
168                         .inactiveOptionalProjects("non-existing-module")
169                         .inactiveRequiredProjects(MODULE_B)
170                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_C_1, MODULE_A, MODULE_C_2, INDEPENDENT_MODULE),
171                 scenario("Excluded aggregator project with non-recursive")
172                         .inactiveRequiredProjects(MODULE_C)
173                         .nonRecursive()
174                         .expectResult(PARENT_MODULE, MODULE_C_1, MODULE_A, MODULE_B, MODULE_C_2, INDEPENDENT_MODULE),
175                 scenario("Selected and excluded same project")
176                         .activeRequiredProjects(MODULE_A)
177                         .inactiveRequiredProjects(MODULE_A)
178                         .expectResult(MavenExecutionException.class, "empty reactor"),
179                 scenario("Excluded aggregator, but selected child")
180                         .activeRequiredProjects(MODULE_C_1)
181                         .inactiveRequiredProjects(MODULE_C)
182                         .expectResult(MavenExecutionException.class, "empty reactor"),
183                 scenario("Project selected with different selector resolves to same project")
184                         .activeRequiredProjects(GROUP_ID + ":" + MODULE_A)
185                         .inactiveRequiredProjects(MODULE_A)
186                         .expectResult(MavenExecutionException.class, "empty reactor"),
187                 scenario("Selected and excluded same project, but also selected another project")
188                         .activeRequiredProjects(MODULE_A, MODULE_B)
189                         .inactiveRequiredProjects(MODULE_A)
190                         .expectResult(MODULE_B),
191                 scenario("Selected missing project as required and as optional")
192                         .activeRequiredProjects("non-existing-module")
193                         .activeOptionalProjects("non-existing-module")
194                         .expectResult(MavenExecutionException.class, "not find the selected project"),
195                 scenario("Resuming from project")
196                         .resumeFrom(MODULE_B)
197                         .expectResult(MODULE_B, MODULE_C_2, INDEPENDENT_MODULE),
198                 scenario("Selected project with also make dependencies")
199                         .activeRequiredProjects(MODULE_C_2)
200                         .makeBehavior(REACTOR_MAKE_UPSTREAM)
201                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_A, MODULE_B, MODULE_C_2),
202                 scenario("Selected project with also make dependents")
203                         .activeRequiredProjects(MODULE_B)
204                         .makeBehavior(REACTOR_MAKE_DOWNSTREAM)
205                         .expectResult(MODULE_B, MODULE_C_2),
206                 scenario("Resuming from project with also make dependencies")
207                         .makeBehavior(REACTOR_MAKE_UPSTREAM)
208                         .resumeFrom(MODULE_C_2)
209                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_A, MODULE_B, MODULE_C_2, INDEPENDENT_MODULE),
210                 scenario("Selected project with resume from and also make dependency (MNG-4960 IT#1)")
211                         .activeRequiredProjects(MODULE_C_2)
212                         .resumeFrom(MODULE_B)
213                         .makeBehavior(REACTOR_MAKE_UPSTREAM)
214                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_A, MODULE_B, MODULE_C_2),
215                 scenario("Selected project with resume from and also make dependent (MNG-4960 IT#2)")
216                         .activeRequiredProjects(MODULE_B)
217                         .resumeFrom(MODULE_C_2)
218                         .makeBehavior(REACTOR_MAKE_DOWNSTREAM)
219                         .expectResult(MODULE_C_2),
220                 scenario("Excluding an also make dependency from selectedProject does take its transitive dependency")
221                         .activeRequiredProjects(MODULE_C_2)
222                         .inactiveRequiredProjects(MODULE_B)
223                         .makeBehavior(REACTOR_MAKE_UPSTREAM)
224                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_A, MODULE_C_2),
225                 scenario("Excluding a project also excludes its children")
226                         .inactiveRequiredProjects(MODULE_C)
227                         .expectResult(PARENT_MODULE, MODULE_A, MODULE_B, INDEPENDENT_MODULE),
228                 scenario("Excluding an also make dependency from resumeFrom does take its transitive dependency")
229                         .resumeFrom(MODULE_C_2)
230                         .inactiveRequiredProjects(MODULE_B)
231                         .makeBehavior(REACTOR_MAKE_UPSTREAM)
232                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_A, MODULE_C_2, INDEPENDENT_MODULE),
233                 scenario("Resume from exclude project downstream")
234                         .resumeFrom(MODULE_A)
235                         .inactiveRequiredProjects(MODULE_B)
236                         .expectResult(MODULE_A, MODULE_C_2, INDEPENDENT_MODULE),
237                 scenario("Exclude the project we are resuming from (as proposed in MNG-6676)")
238                         .resumeFrom(MODULE_B)
239                         .inactiveRequiredProjects(MODULE_B)
240                         .expectResult(MODULE_C_2, INDEPENDENT_MODULE),
241                 scenario("Selected projects in wrong order are resumed correctly in order")
242                         .activeRequiredProjects(MODULE_C_2, MODULE_B, MODULE_A)
243                         .resumeFrom(MODULE_B)
244                         .expectResult(MODULE_B, MODULE_C_2),
245                 scenario("Duplicate projects are filtered out")
246                         .activeRequiredProjects(MODULE_A, MODULE_A)
247                         .expectResult(MODULE_A),
248                 scenario("Select reactor by specific pom")
249                         .requestedPom(MODULE_C)
250                         .expectResult(MODULE_C, MODULE_C_1, MODULE_C_2),
251                 scenario("Select reactor by specific pom with also make dependencies")
252                         .requestedPom(MODULE_C)
253                         .makeBehavior(REACTOR_MAKE_UPSTREAM)
254                         .expectResult(PARENT_MODULE, MODULE_C, MODULE_C_1, MODULE_A, MODULE_B, MODULE_C_2),
255                 scenario("Select reactor by specific pom with also make dependents")
256                         .requestedPom(MODULE_B)
257                         .makeBehavior(REACTOR_MAKE_DOWNSTREAM)
258                         .expectResult(MODULE_B, MODULE_C_2));
259     }
260 
261     interface ExpectedResult {}
262 
263     static class SelectedProjectsResult implements ExpectedResult {
264         final List<String> projectNames;
265 
266         public SelectedProjectsResult(List<String> projectSelectors) {
267             this.projectNames = projectSelectors;
268         }
269     }
270 
271     static class ExceptionThrown implements ExpectedResult {
272         final Class<? extends Throwable> expected;
273         final String partOfMessage;
274 
275         public ExceptionThrown(final Class<? extends Throwable> expected, final String partOfMessage) {
276             this.expected = expected;
277             this.partOfMessage = partOfMessage;
278         }
279     }
280 
281     @ParameterizedTest
282     @MethodSource("parameters")
283     void testGetReactorProjects(
284             String parameterDescription,
285             List<String> parameterActiveRequiredProjects,
286             List<String> parameterActiveOptionalProjects,
287             List<String> parameterInactiveRequiredProjects,
288             List<String> parameterInactiveOptionalProjects,
289             String parameterResumeFrom,
290             String parameterMakeBehavior,
291             ExpectedResult parameterExpectedResult,
292             File parameterRequestedPom,
293             boolean parameterRecursive) {
294         // Given
295         ProjectActivation projectActivation = new ProjectActivation();
296         parameterActiveRequiredProjects.forEach(projectActivation::activateRequiredProject);
297         parameterActiveOptionalProjects.forEach(projectActivation::activateOptionalProject);
298         parameterInactiveRequiredProjects.forEach(projectActivation::deactivateRequiredProject);
299         parameterInactiveOptionalProjects.forEach(projectActivation::deactivateOptionalProject);
300 
301         when(mavenExecutionRequest.getProjectActivation()).thenReturn(projectActivation);
302         when(mavenExecutionRequest.getMakeBehavior()).thenReturn(parameterMakeBehavior);
303         when(mavenExecutionRequest.getPom()).thenReturn(parameterRequestedPom);
304         when(mavenExecutionRequest.isRecursive()).thenReturn(parameterRecursive);
305         if (parameterResumeFrom != null && !parameterResumeFrom.isEmpty()) {
306             when(mavenExecutionRequest.getResumeFrom()).thenReturn(":" + parameterResumeFrom);
307         }
308 
309         // When
310         Result<ProjectDependencyGraph> result = graphBuilder.build(session);
311 
312         // Then
313         if (parameterExpectedResult instanceof SelectedProjectsResult) {
314             assertThat(result.hasErrors())
315                     .withFailMessage("Expected result not to have errors")
316                     .isFalse();
317             List<String> expectedProjectNames = ((SelectedProjectsResult) parameterExpectedResult).projectNames;
318             List<MavenProject> actualReactorProjects = result.get().getSortedProjects();
319             List<MavenProject> expectedReactorProjects =
320                     expectedProjectNames.stream().map(artifactIdProjectMap::get).collect(toList());
321             assertEquals(expectedReactorProjects, actualReactorProjects, parameterDescription);
322         } else {
323             assertThat(result.hasErrors())
324                     .withFailMessage("Expected result to have errors")
325                     .isTrue();
326             Class<? extends Throwable> expectedException = ((ExceptionThrown) parameterExpectedResult).expected;
327             String partOfMessage = ((ExceptionThrown) parameterExpectedResult).partOfMessage;
328 
329             assertThat(result.getProblems()).hasSize(1);
330             result.getProblems().forEach(p -> assertThat(p.getException())
331                     .isInstanceOf(expectedException)
332                     .hasMessageContaining(partOfMessage));
333         }
334     }
335 
336     @Test
337     void testProcessPackagingAttribute() throws ProjectBuildingException {
338         graphBuilder = new DefaultGraphBuilder(
339                 mock(BuildResumptionDataRepository.class),
340                 pomlessCollectionStrategy,
341                 multiModuleCollectionStrategy,
342                 requestPomCollectionStrategy);
343 
344         // Create projects
345         MavenProject projectParent = getMavenProject(PARENT_MODULE);
346         MavenProject projectModuleD = getMavenProject(MODULE_D, projectParent, "bom");
347 
348         projectParent.setCollectedProjects(singletonList(projectModuleD));
349 
350         // Set up needed mocks
351         when(session.getRequest()).thenReturn(mavenExecutionRequest);
352         when(session.getProjects()).thenReturn(null); // needed, otherwise it will be an empty list by default
353         when(mavenExecutionRequest.getProjectBuildingRequest()).thenReturn(mock(ProjectBuildingRequest.class));
354         List<ProjectBuildingResult> projectBuildingResults =
355                 createProjectBuildingResultMocks(Stream.of(projectParent, projectModuleD)
356                         .collect(Collectors.toMap(MavenProject::getArtifactId, identity()))
357                         .values());
358         when(projectBuilder.build(anyList(), anyBoolean(), any(ProjectBuildingRequest.class)))
359                 .thenReturn(projectBuildingResults);
360 
361         ProjectActivation projectActivation = new ProjectActivation();
362 
363         when(mavenExecutionRequest.getProjectActivation()).thenReturn(projectActivation);
364         when(mavenExecutionRequest.getPom()).thenReturn(new File(PARENT_MODULE, "pom.xml"));
365 
366         Result<ProjectDependencyGraph> result = graphBuilder.build(session);
367 
368         assertThat(result.hasErrors())
369                 .withFailMessage("Expected result not to have errors")
370                 .isFalse();
371         List<MavenProject> actualReactorProjects = result.get().getSortedProjects();
372         assertEquals(2, actualReactorProjects.size());
373         assertEquals("pom", actualReactorProjects.get(1).getPackaging());
374     }
375 
376     @BeforeEach
377     void before() throws Exception {
378         graphBuilder = new DefaultGraphBuilder(
379                 mock(BuildResumptionDataRepository.class),
380                 pomlessCollectionStrategy,
381                 multiModuleCollectionStrategy,
382                 requestPomCollectionStrategy);
383 
384         // Create projects
385         MavenProject projectParent = getMavenProject(PARENT_MODULE);
386         MavenProject projectIndependentModule = getMavenProject(INDEPENDENT_MODULE);
387         MavenProject projectModuleA = getMavenProject(MODULE_A, projectParent);
388         MavenProject projectModuleB = getMavenProject(MODULE_B, projectParent);
389         MavenProject projectModuleC = getMavenProject(MODULE_C, projectParent);
390         MavenProject projectModuleC1 = getMavenProject(MODULE_C_1, projectModuleC);
391         MavenProject projectModuleC2 = getMavenProject(MODULE_C_2, projectModuleC);
392 
393         artifactIdProjectMap = Stream.of(
394                         projectParent,
395                         projectIndependentModule,
396                         projectModuleA,
397                         projectModuleB,
398                         projectModuleC,
399                         projectModuleC1,
400                         projectModuleC2)
401                 .collect(Collectors.toMap(MavenProject::getArtifactId, identity()));
402 
403         // Set dependencies and modules
404         projectModuleB.setDependencies(singletonList(toDependency(projectModuleA)));
405         projectModuleC2.setDependencies(singletonList(toDependency(projectModuleB)));
406         projectParent.setCollectedProjects(asList(
407                 projectIndependentModule,
408                 projectModuleA,
409                 projectModuleB,
410                 projectModuleC,
411                 projectModuleC1,
412                 projectModuleC2));
413         projectModuleC.setCollectedProjects(asList(projectModuleC1, projectModuleC2));
414 
415         // Set up needed mocks
416         when(session.getRequest()).thenReturn(mavenExecutionRequest);
417         when(session.getProjects()).thenReturn(null); // needed, otherwise it will be an empty list by default
418         when(mavenExecutionRequest.getProjectBuildingRequest()).thenReturn(mock(ProjectBuildingRequest.class));
419         List<ProjectBuildingResult> projectBuildingResults =
420                 createProjectBuildingResultMocks(artifactIdProjectMap.values());
421         when(projectBuilder.build(anyList(), anyBoolean(), any(ProjectBuildingRequest.class)))
422                 .thenReturn(projectBuildingResults);
423     }
424 
425     private MavenProject getMavenProject(String artifactId, MavenProject parentProject) {
426         MavenProject project = getMavenProject(artifactId);
427         Parent parent = new Parent();
428         parent.setGroupId(parentProject.getGroupId());
429         parent.setArtifactId(parentProject.getArtifactId());
430         project.getModel().setParent(parent);
431         return project;
432     }
433 
434     private MavenProject getMavenProject(String artifactId) {
435         MavenProject mavenProject = new MavenProject();
436         mavenProject.setGroupId(GROUP_ID);
437         mavenProject.setArtifactId(artifactId);
438         mavenProject.setVersion("1.0");
439         mavenProject.setPomFile(new File(artifactId, "pom.xml"));
440         mavenProject.setCollectedProjects(new ArrayList<>());
441         return mavenProject;
442     }
443 
444     private MavenProject getMavenProject(String artifactId, MavenProject parentProject, String packaging) {
445         MavenProject project = getMavenProject(artifactId);
446         Parent parent = new Parent();
447         parent.setGroupId(parentProject.getGroupId());
448         parent.setArtifactId(parentProject.getArtifactId());
449         project.getModel().setParent(parent);
450         project.setPackaging(packaging);
451         return project;
452     }
453 
454     private Dependency toDependency(MavenProject mavenProject) {
455         Dependency dependency = new Dependency();
456         dependency.setGroupId(mavenProject.getGroupId());
457         dependency.setArtifactId(mavenProject.getArtifactId());
458         dependency.setVersion(mavenProject.getVersion());
459         return dependency;
460     }
461 
462     private List<ProjectBuildingResult> createProjectBuildingResultMocks(Collection<MavenProject> projects) {
463         return projects.stream()
464                 .map(project -> {
465                     ProjectBuildingResult result = mock(ProjectBuildingResult.class);
466                     when(result.getProject()).thenReturn(project);
467                     return result;
468                 })
469                 .collect(toList());
470     }
471 
472     static class ScenarioBuilder {
473         private String description;
474         private List<String> activeRequiredProjects = emptyList();
475         private List<String> activeOptionalProjects = emptyList();
476         private List<String> inactiveRequiredProjects = emptyList();
477         private List<String> inactiveOptionalProjects = emptyList();
478         private String resumeFrom = "";
479         private String makeBehavior = "";
480         private File requestedPom = new File(PARENT_MODULE, "pom.xml");
481         private boolean recursive = true;
482 
483         private ScenarioBuilder() {}
484 
485         public static ScenarioBuilder scenario(String description) {
486             ScenarioBuilder scenarioBuilder = new ScenarioBuilder();
487             scenarioBuilder.description = description;
488             return scenarioBuilder;
489         }
490 
491         public ScenarioBuilder activeRequiredProjects(String... activeRequiredProjects) {
492             this.activeRequiredProjects = prependWithColonIfNeeded(activeRequiredProjects);
493             return this;
494         }
495 
496         public ScenarioBuilder activeOptionalProjects(String... activeOptionalProjects) {
497             this.activeOptionalProjects = prependWithColonIfNeeded(activeOptionalProjects);
498             return this;
499         }
500 
501         public ScenarioBuilder inactiveRequiredProjects(String... inactiveRequiredProjects) {
502             this.inactiveRequiredProjects = prependWithColonIfNeeded(inactiveRequiredProjects);
503             return this;
504         }
505 
506         public ScenarioBuilder inactiveOptionalProjects(String... inactiveOptionalProjects) {
507             this.inactiveOptionalProjects = prependWithColonIfNeeded(inactiveOptionalProjects);
508             return this;
509         }
510 
511         public ScenarioBuilder resumeFrom(String resumeFrom) {
512             this.resumeFrom = resumeFrom;
513             return this;
514         }
515 
516         public ScenarioBuilder makeBehavior(String makeBehavior) {
517             this.makeBehavior = makeBehavior;
518             return this;
519         }
520 
521         public ScenarioBuilder requestedPom(String requestedPom) {
522             this.requestedPom = new File(requestedPom, "pom.xml");
523             return this;
524         }
525 
526         public ScenarioBuilder nonRecursive() {
527             this.recursive = false;
528             return this;
529         }
530 
531         public Arguments expectResult(String... expectedReactorProjects) {
532             ExpectedResult expectedResult = new SelectedProjectsResult(asList(expectedReactorProjects));
533             return createTestArguments(expectedResult);
534         }
535 
536         public Arguments expectResult(Class<? extends Exception> expected, final String partOfMessage) {
537             ExpectedResult expectedResult = new ExceptionThrown(expected, partOfMessage);
538             return createTestArguments(expectedResult);
539         }
540 
541         private Arguments createTestArguments(ExpectedResult expectedResult) {
542             return Arguments.arguments(
543                     description,
544                     activeRequiredProjects,
545                     activeOptionalProjects,
546                     inactiveRequiredProjects,
547                     inactiveOptionalProjects,
548                     resumeFrom,
549                     makeBehavior,
550                     expectedResult,
551                     requestedPom,
552                     recursive);
553         }
554 
555         private List<String> prependWithColonIfNeeded(String[] selectors) {
556             return Arrays.stream(selectors).map(this::prependWithColonIfNeeded).collect(toList());
557         }
558 
559         private String prependWithColonIfNeeded(String selector) {
560             return selector.indexOf(':') == -1 ? ":" + selector : selector;
561         }
562     }
563 }