speedup: cache zip files in fixture

test/org/jetbrains/java/decompiler/DecompilerTestFixture.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2016 JetBrains s.r.o.
+ * Copyright 2000-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,9 +21,9 @@ import org.jetbrains.java.decompiler.util.InterpreterUtil;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Objects;
+import java.util.*;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
 
 import static org.assertj.core.api.AssertionsForInterfaceTypes.assertThat;
 import static org.junit.Assert.assertTrue;
@@ -32,7 +32,7 @@ public class DecompilerTestFixture {
   private File testDataDir;
   private File tempDir;
   private File targetDir;
-  private ConsoleDecompiler decompiler;
+  private TestConsoleDecompiler decompiler;
 
   public void setUp(String... optionPairs) throws IOException {
     assertThat(optionPairs.length % 2).isEqualTo(0);
@@ -62,13 +62,14 @@ public class DecompilerTestFixture {
     for (int i = 0; i < optionPairs.length; i += 2) {
       options.put(optionPairs[i], optionPairs[i + 1]);
     }
-    decompiler = new ConsoleDecompiler(targetDir, options);
+    decompiler = new TestConsoleDecompiler(targetDir, options);
   }
 
   public void tearDown() {
     if (tempDir != null) {
       delete(tempDir);
     }
+    decompiler.close();
   }
 
   public File getTestDataDir() {
@@ -122,4 +123,43 @@ public class DecompilerTestFixture {
       throw new RuntimeException(e);
     }
   }
+
+  // cache zip files
+  private static class TestConsoleDecompiler extends ConsoleDecompiler {
+    private final HashMap<String, ZipFile> zipFiles = new HashMap<>();
+
+    public TestConsoleDecompiler(File destination, Map<String, Object> options) {
+      super(destination, options);
+    }
+
+    @Override
+    public byte[] getBytecode(String externalPath, String internalPath) throws IOException {
+      File file = new File(externalPath);
+      if (internalPath == null) {
+        return InterpreterUtil.getBytes(file);
+      }
+      else {
+        ZipFile archive = zipFiles.get(file.getName());
+        if (archive == null) {
+          archive = new ZipFile(file);
+          zipFiles.put(file.getName(), archive);
+        }
+        ZipEntry entry = archive.getEntry(internalPath);
+        if (entry == null) throw new IOException("Entry not found: " + internalPath);
+        return InterpreterUtil.getBytes(archive, entry);
+      }
+    }
+
+    void close() {
+      for (ZipFile file : zipFiles.values()) {
+        try {
+          file.close();
+        }
+        catch (IOException e) {
+          e.printStackTrace();
+        }
+      }
+      zipFiles.clear();
+    }
+  }
 }