mockit.coverage.DataFileMerging Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jmockit-coverage Show documentation

JMockit Coverage is a code coverage tool with several metrics (line, path, data) capable of generating HTML reports. It is designed with ease of use in mind, avoiding the need for complex configuration. Instead, smart (but overridable) defaults are employed, such as the selection of which classes to consider for coverage, and where to find sources files for report generation.

There is a newer version: 1.23

Show newest version

/*
 * Copyright (c) 2006-2015 Rogério Liesenfeld
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.coverage;

import java.io.*;
import java.util.*;
import javax.annotation.*;

import mockit.coverage.data.*;

final class DataFileMerging
{
   @Nonnull private final List inputFiles;

   DataFileMerging(@Nonnull String[] inputPaths)
   {
      inputFiles = new ArrayList(inputPaths.length);

      for (String path : inputPaths) {
         addInputFileToList(path.trim());
      }
   }

   private void addInputFileToList(@Nonnull String path)
   {
      if (!path.isEmpty()) {
         File inputFile = new File(path);

         if (inputFile.isDirectory()) {
            inputFile = new File(inputFile, "coverage.ser");
         }

         inputFiles.add(inputFile);
      }
   }

   @Nonnull CoverageData merge() throws IOException
   {
      CoverageData mergedData = null;

      for (File inputFile : inputFiles) {
         if (inputFile.exists()) {
            CoverageData existingData = CoverageData.readDataFromFile(inputFile);

            if (mergedData == null) {
               mergedData = existingData;
            }
            else {
               mergedData.merge(existingData);
            }
         }
      }

      if (mergedData == null) {
         throw new IllegalArgumentException("No input \"coverage.ser\" files found");
      }

      return mergedData;
   }
}