Beispiel #1
0
  @SuppressWarnings("PMD.EmptyCatchBlock")
  public static int runTests(
      final CommandRunnerParams params,
      Iterable<TestRule> tests,
      BuildContext buildContext,
      ExecutionContext executionContext,
      final TestRunningOptions options,
      ListeningExecutorService service,
      BuildEngine buildEngine,
      final StepRunner stepRunner)
      throws IOException, ExecutionException, InterruptedException {

    if (options.isUsingOneTimeOutputDirectories()) {
      BuckConstant.setOneTimeTestSubdirectory(UUID.randomUUID().toString());
    }

    ImmutableSet<JavaLibrary> rulesUnderTest;
    // If needed, we first run instrumentation on the class files.
    if (options.isCodeCoverageEnabled()) {
      rulesUnderTest = getRulesUnderTest(tests);
      if (!rulesUnderTest.isEmpty()) {
        try {
          stepRunner.runStepForBuildTarget(
              new MakeCleanDirectoryStep(JUnitStep.JACOCO_OUTPUT_DIR),
              Optional.<BuildTarget>absent());
        } catch (StepFailedException e) {
          params.getConsole().printBuildFailureWithoutStacktrace(e);
          return 1;
        }
      }
    } else {
      rulesUnderTest = ImmutableSet.of();
    }

    final ImmutableSet<String> testTargets =
        FluentIterable.from(tests)
            .transform(HasBuildTarget.TO_TARGET)
            .transform(Functions.toStringFunction())
            .toSet();

    final int totalNumberOfTests = Iterables.size(tests);

    params
        .getBuckEventBus()
        .post(
            TestRunEvent.started(
                options.isRunAllTests(),
                options.getTestSelectorList(),
                options.shouldExplainTestSelectorList(),
                testTargets));

    // Start running all of the tests. The result of each java_test() rule is represented as a
    // ListenableFuture.
    List<ListenableFuture<TestResults>> results = Lists.newArrayList();

    // Unless `--verbose 0` is specified, print out test results as they become available.
    // Failures with the ListenableFuture should always be printed, as they indicate an error with
    // Buck, not the test being run.
    Verbosity verbosity = params.getConsole().getVerbosity();
    final boolean printTestResults = (verbosity != Verbosity.SILENT);

    // For grouping results!
    final TestResultsGrouper grouper;
    if (options.isIgnoreFailingDependencies()) {
      grouper = new TestResultsGrouper(tests);
    } else {
      grouper = null;
    }

    TestRuleKeyFileHelper testRuleKeyFileHelper =
        new TestRuleKeyFileHelper(executionContext.getProjectFilesystem(), buildEngine);
    final AtomicInteger lastReportedTestSequenceNumber = new AtomicInteger();
    final List<TestRun> separateTestRuns = Lists.newArrayList();
    List<TestRun> parallelTestRuns = Lists.newArrayList();
    for (final TestRule test : tests) {
      // Determine whether the test needs to be executed.
      boolean isTestRunRequired;
      isTestRunRequired =
          isTestRunRequiredForTest(
              test,
              buildEngine,
              executionContext,
              testRuleKeyFileHelper,
              options.isResultsCacheEnabled(),
              !options.getTestSelectorList().isEmpty());

      List<Step> steps;
      if (isTestRunRequired) {
        params.getBuckEventBus().post(IndividualTestEvent.started(testTargets));
        ImmutableList.Builder<Step> stepsBuilder = ImmutableList.builder();
        Preconditions.checkState(buildEngine.isRuleBuilt(test.getBuildTarget()));
        final Map<String, UUID> testUUIDMap = new HashMap<>();
        List<Step> testSteps =
            test.runTests(
                buildContext,
                executionContext,
                options.isDryRun(),
                options.isShufflingTests(),
                options.getTestSelectorList(),
                new TestRule.TestReportingCallback() {
                  @Override
                  public void testsDidBegin() {
                    LOG.debug("Tests for rule %s began", test.getBuildTarget());
                  }

                  @Override
                  public void testDidBegin(String testCaseName, String testName) {
                    LOG.debug(
                        "Test rule %s test case %s test name %s began",
                        test.getBuildTarget(), testCaseName, testName);
                    UUID testUUID = UUID.randomUUID();
                    // UUID is immutable and thread-safe as of Java 7, so it's
                    // safe to stash in a map and use later:
                    //
                    // http://bugs.java.com/view_bug.do?bug_id=6611830
                    testUUIDMap.put(testCaseName + ":" + testName, testUUID);
                    params
                        .getBuckEventBus()
                        .post(TestSummaryEvent.started(testUUID, testCaseName, testName));
                  }

                  @Override
                  public void testDidEnd(TestResultSummary testResultSummary) {
                    LOG.debug(
                        "Test rule %s test did end: %s", test.getBuildTarget(), testResultSummary);
                    UUID testUUID =
                        testUUIDMap.get(
                            testResultSummary.getTestCaseName()
                                + ":"
                                + testResultSummary.getTestName());
                    Preconditions.checkNotNull(testUUID);
                    params
                        .getBuckEventBus()
                        .post(TestSummaryEvent.finished(testUUID, testResultSummary));
                  }

                  @Override
                  public void testsDidEnd(List<TestCaseSummary> testCaseSummaries) {
                    LOG.debug(
                        "Test rule %s tests did end: %s", test.getBuildTarget(), testCaseSummaries);
                  }
                });
        if (!testSteps.isEmpty()) {
          stepsBuilder.addAll(testSteps);
          stepsBuilder.add(testRuleKeyFileHelper.createRuleKeyInDirStep(test));
        }
        steps = stepsBuilder.build();
      } else {
        steps = ImmutableList.of();
      }

      TestRun testRun =
          TestRun.of(
              test,
              steps,
              getCachingStatusTransformingCallable(
                  isTestRunRequired,
                  test.interpretTestResults(
                      executionContext,
                      /*isUsingTestSelectors*/ !options.getTestSelectorList().isEmpty(),
                      /*isDryRun*/ options.isDryRun())));

      // Always run the commands, even if the list of commands as empty. There may be zero
      // commands because the rule is cached, but its results must still be processed.
      if (test.runTestSeparately()) {
        LOG.debug("Running test %s in serial", test);
        separateTestRuns.add(testRun);
      } else {
        LOG.debug("Running test %s in parallel", test);
        parallelTestRuns.add(testRun);
      }
    }

    final StepRunner.StepRunningCallback testStepRunningCallback =
        new StepRunner.StepRunningCallback() {
          @Override
          public void stepsWillRun(Optional<BuildTarget> buildTarget) {
            Preconditions.checkState(buildTarget.isPresent());
            LOG.debug("Test steps will run for %s", buildTarget);
            params.getBuckEventBus().post(TestRuleEvent.started(buildTarget.get()));
          }

          @Override
          public void stepsDidRun(Optional<BuildTarget> buildTarget) {
            Preconditions.checkState(buildTarget.isPresent());
            LOG.debug("Test steps did run for %s", buildTarget);
            params.getBuckEventBus().post(TestRuleEvent.finished(buildTarget.get()));
          }
        };

    for (TestRun testRun : parallelTestRuns) {
      ListenableFuture<TestResults> testResults =
          stepRunner.runStepsAndYieldResult(
              testRun.getSteps(),
              testRun.getTestResultsCallable(),
              Optional.of(testRun.getTest().getBuildTarget()),
              service,
              testStepRunningCallback);
      results.add(
          transformTestResults(
              params,
              testResults,
              grouper,
              testRun.getTest(),
              testTargets,
              printTestResults,
              lastReportedTestSequenceNumber,
              totalNumberOfTests));
    }

    ListenableFuture<List<TestResults>> parallelTestStepsFuture = Futures.allAsList(results);

    final List<TestResults> completedResults = Lists.newArrayList();

    final ListeningExecutorService directExecutorService = MoreExecutors.newDirectExecutorService();
    ListenableFuture<Void> uberFuture =
        stepRunner.addCallback(
            parallelTestStepsFuture,
            new FutureCallback<List<TestResults>>() {
              @Override
              public void onSuccess(List<TestResults> parallelTestResults) {
                LOG.debug("Parallel tests completed, running separate tests...");
                completedResults.addAll(parallelTestResults);
                List<ListenableFuture<TestResults>> separateResultsList = Lists.newArrayList();
                for (TestRun testRun : separateTestRuns) {
                  separateResultsList.add(
                      transformTestResults(
                          params,
                          stepRunner.runStepsAndYieldResult(
                              testRun.getSteps(),
                              testRun.getTestResultsCallable(),
                              Optional.of(testRun.getTest().getBuildTarget()),
                              directExecutorService,
                              testStepRunningCallback),
                          grouper,
                          testRun.getTest(),
                          testTargets,
                          printTestResults,
                          lastReportedTestSequenceNumber,
                          totalNumberOfTests));
                }
                ListenableFuture<List<TestResults>> serialResults =
                    Futures.allAsList(separateResultsList);
                try {
                  completedResults.addAll(serialResults.get());
                } catch (ExecutionException e) {
                  LOG.error(e, "Error fetching serial test results");
                  throw new HumanReadableException(e, "Error fetching serial test results");
                } catch (InterruptedException e) {
                  LOG.error(e, "Interrupted fetching serial test results");
                  try {
                    serialResults.cancel(true);
                  } catch (CancellationException ignored) {
                    // Rethrow original InterruptedException instead.
                  }
                  Thread.currentThread().interrupt();
                  throw new HumanReadableException(e, "Test cancelled");
                }
                LOG.debug("Done running serial tests.");
              }

              @Override
              public void onFailure(Throwable e) {
                LOG.error(e, "Parallel tests failed, not running serial tests");
                throw new HumanReadableException(e, "Parallel tests failed");
              }
            },
            directExecutorService);

    try {
      // Block until all the tests have finished running.
      uberFuture.get();
    } catch (ExecutionException e) {
      e.printStackTrace(params.getConsole().getStdErr());
      return 1;
    } catch (InterruptedException e) {
      try {
        uberFuture.cancel(true);
      } catch (CancellationException ignored) {
        // Rethrow original InterruptedException instead.
      }
      Thread.currentThread().interrupt();
      throw e;
    }

    params.getBuckEventBus().post(TestRunEvent.finished(testTargets, completedResults));

    // Write out the results as XML, if requested.
    Optional<String> path = options.getPathToXmlTestOutput();
    if (path.isPresent()) {
      try (Writer writer = Files.newWriter(new File(path.get()), Charsets.UTF_8)) {
        writeXmlOutput(completedResults, writer);
      }
    }

    // Generate the code coverage report.
    if (options.isCodeCoverageEnabled() && !rulesUnderTest.isEmpty()) {
      try {
        Optional<DefaultJavaPackageFinder> defaultJavaPackageFinderOptional =
            Optional.fromNullable(params.getBuckConfig().createDefaultJavaPackageFinder());
        stepRunner.runStepForBuildTarget(
            getReportCommand(
                rulesUnderTest,
                defaultJavaPackageFinderOptional,
                params.getRepository().getFilesystem(),
                JUnitStep.JACOCO_OUTPUT_DIR,
                options.getCoverageReportFormat()),
            Optional.<BuildTarget>absent());
      } catch (StepFailedException e) {
        params.getConsole().printBuildFailureWithoutStacktrace(e);
        return 1;
      }
    }

    boolean failures =
        Iterables.any(
            completedResults,
            new Predicate<TestResults>() {
              @Override
              public boolean apply(TestResults results) {
                LOG.debug("Checking result %s for failure", results);
                return !results.isSuccess();
              }
            });

    return failures ? TEST_FAILURES_EXIT_CODE : 0;
  }