| // Copyright 2016 The Bazel Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.testing.coverage; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static java.nio.file.StandardOpenOption.APPEND; |
| import static java.nio.file.StandardOpenOption.CREATE; |
| |
| import com.google.common.collect.ImmutableSet; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.io.Writer; |
| import java.nio.file.Files; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.TreeMap; |
| import org.jacoco.core.analysis.IBundleCoverage; |
| import org.jacoco.core.analysis.IClassCoverage; |
| import org.jacoco.core.analysis.ICounter; |
| import org.jacoco.core.analysis.IMethodCoverage; |
| import org.jacoco.core.analysis.IPackageCoverage; |
| import org.jacoco.core.analysis.ISourceFileCoverage; |
| import org.jacoco.core.data.ExecutionData; |
| import org.jacoco.core.data.SessionInfo; |
| import org.jacoco.report.IReportGroupVisitor; |
| import org.jacoco.report.IReportVisitor; |
| import org.jacoco.report.ISourceFileLocator; |
| |
| /** |
| * Simple lcov formatter to be used with lcov_merger.par. |
| * |
| * <p>The lcov format is documented here: http://ltp.sourceforge.net/coverage/lcov/geninfo.1.php |
| */ |
| public class JacocoLCOVFormatter { |
| |
| // Exec paths of the uninstrumented files that are being analyzed. This is helpful for files in |
| // jars passed through java_import or some custom rule where blaze doesn't have enough context to |
| // compute the right paths, but relies on these pre-computed exec paths. |
| private final ImmutableSet<String> execPathsOfUninstrumentedFiles; |
| |
| public JacocoLCOVFormatter(ImmutableSet<String> execPathsOfUninstrumentedFiles) { |
| this.execPathsOfUninstrumentedFiles = execPathsOfUninstrumentedFiles; |
| } |
| |
| public JacocoLCOVFormatter() { |
| this.execPathsOfUninstrumentedFiles = ImmutableSet.of(); |
| } |
| |
| public IReportVisitor createVisitor( |
| final File output, final Map<String, BranchCoverageDetail> branchCoverageDetail) { |
| return new IReportVisitor() { |
| |
| private Map<String, Map<String, IClassCoverage>> sourceToClassCoverage = new TreeMap<>(); |
| private Map<String, ISourceFileCoverage> sourceToFileCoverage = new TreeMap<>(); |
| |
| private String getExecPathForEntryName(String fileName) { |
| if (execPathsOfUninstrumentedFiles.isEmpty()) { |
| return fileName; |
| } |
| for (String execPath : execPathsOfUninstrumentedFiles) { |
| if (execPath.endsWith("/" + fileName)) { |
| return execPath; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public void visitInfo(List<SessionInfo> sessionInfos, Collection<ExecutionData> executionData) |
| throws IOException {} |
| |
| @Override |
| public void visitEnd() throws IOException { |
| try (Writer fileWriter = Files.newBufferedWriter(output.toPath(), UTF_8, CREATE, APPEND); |
| PrintWriter printWriter = new PrintWriter(fileWriter)) { |
| for (String sourceFile : sourceToClassCoverage.keySet()) { |
| processSourceFile(printWriter, sourceFile); |
| } |
| } |
| } |
| |
| @Override |
| public void visitBundle(IBundleCoverage bundle, ISourceFileLocator locator) |
| throws IOException { |
| // Jacoco's API is geared towards HTML/XML reports which have a hierarchical nature. The |
| // following loop would call the report generators for packages, classes, methods, and |
| // finally link the source view (which would be generated by walking the actual source file |
| // and annotating the coverage data). For lcov, we don't really need the source file, but |
| // we need to output FN/FNDA pairs with method coverage, which means we need to index this |
| // information and process everything at the end. |
| for (IPackageCoverage pkgCoverage : bundle.getPackages()) { |
| for (IClassCoverage clsCoverage : pkgCoverage.getClasses()) { |
| String fileName = getExecPathForEntryName( |
| clsCoverage.getPackageName() + "/" + clsCoverage.getSourceFileName()); |
| if (fileName == null) { |
| continue; |
| } |
| if (!sourceToClassCoverage.containsKey(fileName)) { |
| sourceToClassCoverage.put(fileName, new TreeMap<String, IClassCoverage>()); |
| } |
| sourceToClassCoverage.get(fileName).put(clsCoverage.getName(), clsCoverage); |
| } |
| for (ISourceFileCoverage srcCoverage : pkgCoverage.getSourceFiles()) { |
| String sourceName = getExecPathForEntryName( |
| srcCoverage.getPackageName() + "/" + srcCoverage.getName()); |
| if (sourceName != null) { |
| sourceToFileCoverage.put(sourceName, srcCoverage); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public IReportGroupVisitor visitGroup(String name) throws IOException { |
| return null; |
| } |
| |
| private void processSourceFile(PrintWriter writer, String sourceFile) { |
| writer.printf("SF:%s\n", sourceFile); |
| |
| ISourceFileCoverage srcCoverage = sourceToFileCoverage.get(sourceFile); |
| if (srcCoverage != null) { |
| // List methods, including methods from nested classes, in FN/FNDA pairs |
| for (IClassCoverage clsCoverage : sourceToClassCoverage.get(sourceFile).values()) { |
| for (IMethodCoverage mthCoverage : clsCoverage.getMethods()) { |
| String name = constructFunctionName(mthCoverage, clsCoverage.getName()); |
| writer.printf("FN:%d,%s\n", mthCoverage.getFirstLine(), name); |
| writer.printf("FNDA:%d,%s\n", mthCoverage.getMethodCounter().getCoveredCount(), name); |
| } |
| } |
| |
| for (IClassCoverage clsCoverage : sourceToClassCoverage.get(sourceFile).values()) { |
| BranchCoverageDetail detail = branchCoverageDetail.get(clsCoverage.getName()); |
| if (detail != null) { |
| for (int line : detail.linesWithBranches()) { |
| int numBranches = detail.getBranches(line); |
| boolean executed = detail.getExecutedBit(line); |
| if (executed) { |
| for (int branchIdx = 0; branchIdx < numBranches; branchIdx++) { |
| if (detail.getTakenBit(line, branchIdx)) { |
| writer.printf("BA:%d,%d\n", line, 2); // executed, taken |
| } else { |
| writer.printf("BA:%d,%d\n", line, 1); // executed, not taken |
| } |
| } |
| } else { |
| for (int branchIdx = 0; branchIdx < numBranches; branchIdx++) { |
| writer.printf("BA:%d,%d\n", line, 0); // not executed |
| } |
| } |
| } |
| } |
| } |
| |
| // List of DA entries matching source lines |
| int firstLine = srcCoverage.getFirstLine(); |
| int lastLine = srcCoverage.getLastLine(); |
| for (int line = firstLine; line <= lastLine; line++) { |
| ICounter instructionCounter = srcCoverage.getLine(line).getInstructionCounter(); |
| if (instructionCounter.getTotalCount() != 0) { |
| writer.printf("DA:%d,%d\n", line, instructionCounter.getCoveredCount()); |
| } |
| } |
| } |
| writer.println("end_of_record"); |
| } |
| |
| private String constructFunctionName(IMethodCoverage mthCoverage, String clsName) { |
| // The lcov spec doesn't of course cover Java formats, so we output the method signature. |
| // lcov_merger doesn't seem to care about these entries. |
| return clsName + "::" + mthCoverage.getName() + " " + mthCoverage.getDesc(); |
| } |
| }; |
| } |
| } |