java-decompiler: better diagnostic

plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/main/rels/ClassWrapper.java

@@ -61,6 +61,7 @@ public class ClassWrapper {
     }
 
     int maxSec = Integer.parseInt(DecompilerContext.getProperty(IFernflowerPreferences.MAX_PROCESSING_METHOD).toString());
+    boolean testMode = DecompilerContext.getOption(IFernflowerPreferences.UNIT_TEST_MODE);
 
     for (StructMethod mt : classStruct.getMethods()) {
       DecompilerContext.getLogger().startMethod(mt.getName() + " " + mt.getDescriptor());
@@ -83,7 +84,7 @@ public class ClassWrapper {
 
       try {
         if (mt.containsCode()) {
-          if (maxSec == 0) {
+          if (maxSec == 0 || testMode) {
             root = MethodProcessorRunnable.codeToJava(mt, varProc);
           }
           else {

plugins/java-decompiler/plugin/src/org/jetbrains/java/decompiler/IdeaDecompiler.java

@@ -109,6 +109,10 @@ public class IdeaDecompiler extends ClassFileDecompilers.Light {
         }
       });
     }
+
+    if (app.isUnitTestMode()) {
+      myOptions.put(IFernflowerPreferences.UNIT_TEST_MODE, "1");
+    }
   }
 
   private void showLegalNotice(final Project project, final VirtualFile file) {

plugins/java-decompiler/plugin/src/org/jetbrains/java/decompiler/IdeaLogger.java

@@ -44,7 +44,8 @@ public class IdeaLogger extends IFernflowerLogger {
     if (t instanceof InternalException) throw (InternalException)t;
     else if (t instanceof ProcessCanceledException) throw (ProcessCanceledException)t;
     else if (t instanceof InterruptedException) throw new ProcessCanceledException(t);
-    else throw new InternalException(message, t);
+    if (myClass != null) message = message + " [" + myClass + "]";
+    throw new InternalException(message, t);
   }
 
   @Override