Add test of unittests.

tests/compiler/dart2js/analyze_helper.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyze_helper;
 
 import 'dart:async';
 import 'dart:io';
 import 'package:compiler/compiler.dart' as api;
 import 'package:compiler/src/apiimpl.dart';
 import 'package:compiler/src/commandline_options.dart';
 import 'package:compiler/src/diagnostics/messages.dart' show
-    Message;
+    Message,
+    MessageKind;
 import 'package:compiler/src/filenames.dart';
 import 'package:compiler/src/source_file_provider.dart';
 import 'package:compiler/src/util/uri_extras.dart';
 
 /**
  * Map of whitelisted warnings and errors.
  *
  * Only add a whitelisting together with a bug report to dartbug.com and add
  * the bug issue number as a comment on the whitelisting.
  *
  * Use an identifiable suffix of the file uri as key. Use a fixed substring of
  * the error/warning message in the list of whitelistings for each file.
  */
 // TODO(johnniwinther): Support canonical URIs as keys and message kinds as
 // values.
 
 class CollectingDiagnosticHandler extends FormattingDiagnosticHandler {
   bool hasWarnings = false;
   bool hasHint = false;
   bool hasErrors = false;
   bool lastWasWhitelisted = false;
 
-  Map<String, Map<String, int>> whiteListMap
-      = new Map<String, Map<String, int>>();
+  Map<String, Map<dynamic/*String|MessageKind*/, int>> whiteListMap
+      = new Map<String, Map<dynamic/*String|MessageKind*/, int>>();
 
-  CollectingDiagnosticHandler(Map<String, List<String>> whiteList,
-                              SourceFileProvider provider)
+  CollectingDiagnosticHandler(
+      Map<String, List/*<String|MessageKind>*/> whiteList,
+      SourceFileProvider provider)
       : super(provider) {
-    whiteList.forEach((String file, List<String> messageParts) {
-      var useMap = new Map<String,int>();
-      for (String messagePart in messageParts) {
+    whiteList.forEach((String file, List/*<String|MessageKind>*/ messageParts) {
+      var useMap = new Map<dynamic/*String|MessageKind*/, int>();
+      for (var messagePart in messageParts) {
         useMap[messagePart] = 0;
       }
       whiteListMap[file] = useMap;
     });
   }
 
   bool checkResults() {
     bool validWhiteListUse = checkWhiteListUse();
     reportWhiteListUse();
     return !hasWarnings && !hasHint && !hasErrors && validWhiteListUse;
   }
 
   bool checkWhiteListUse() {
     bool allUsed = true;
     for (String file in whiteListMap.keys) {
-      for (String messagePart in whiteListMap[file].keys) {
+      for (var messagePart in whiteListMap[file].keys) {
         if (whiteListMap[file][messagePart] == 0) {
           print("Whitelisting '$messagePart' is unused in '$file'. "
                 "Remove the whitelisting from the whitelist map.");
           allUsed = false;
         }
       }
     }
     return allUsed;
   }
 
   void reportWhiteListUse() {
     for (String file in whiteListMap.keys) {
-      for (String messagePart in whiteListMap[file].keys) {
+      for (var messagePart in whiteListMap[file].keys) {
         int useCount = whiteListMap[file][messagePart];
         print("Whitelisted message '$messagePart' suppressed $useCount "
               "time(s) in '$file'.");
       }
     }
   }
 
-  bool checkWhiteList(Uri uri, String message) {
+  bool checkWhiteList(Uri uri, Message message, String text) {
     if (uri == null) {
       return false;
     }
     String path = uri.path;
     for (String file in whiteListMap.keys) {
       if (path.contains(file)) {
-        for (String messagePart in whiteListMap[file].keys) {
-          if (message.contains(messagePart)) {
+        for (var messagePart in whiteListMap[file].keys) {
+          bool found = false;
+          if (messagePart is String) {
+            found = text.contains(messagePart);
+          } else {
+            assert(messagePart is MessageKind);
+            found = message.kind == messagePart;
+          }
+          if (found) {
             whiteListMap[file][messagePart]++;
             return true;
           }
         }
       }
     }
     return false;
   }
 
   @override
   void report(Message message, Uri uri, int begin, int end, String text,
               api.Diagnostic kind) {
     if (kind == api.Diagnostic.WARNING) {
-      if (checkWhiteList(uri, text)) {
+      if (checkWhiteList(uri, message, text)) {
         // Suppress whitelisted warnings.
         lastWasWhitelisted = true;
         return;
       }
       hasWarnings = true;
     }
     if (kind == api.Diagnostic.HINT) {
-      if (checkWhiteList(uri, text)) {
+      if (checkWhiteList(uri, message, text)) {
         // Suppress whitelisted hints.
         lastWasWhitelisted = true;
         return;
       }
       hasHint = true;
     }
     if (kind == api.Diagnostic.ERROR) {
-      if (checkWhiteList(uri, text)) {
+      if (checkWhiteList(uri, message, text)) {
         // Suppress whitelisted errors.
         lastWasWhitelisted = true;
         return;
       }
       hasErrors = true;
     }
     if (kind == api.Diagnostic.INFO && lastWasWhitelisted) {
       return;
     }
     lastWasWhitelisted = false;
     super.report(message, uri, begin, end, text, kind);
   }
 }
 
 typedef bool CheckResults(CompilerImpl compiler,
                           CollectingDiagnosticHandler handler);
 
+enum AnalysisMode {
+  /// Analyze all declarations in all libraries in one go.
+  ALL,
+  /// Analyze all declarations in the main library.
+  MAIN,
+  /// Analyze all declarations in the given URIs one at a time. This mode can
+  /// handle URIs for parts (i.e. skips these).
+  URI,
+  /// Analyze all declarations reachable from the entry point.
+  TREE_SHAKING,
+}
+
 Future analyze(List<Uri> uriList,
-               Map<String, List<String>> whiteList,
-               {bool analyzeAll: true,
-                bool analyzeMain: false,
-                CheckResults checkResults}) {
+               Map<String, List/*<String|MessageKind>*/> whiteList,
+               {AnalysisMode mode: AnalysisMode.ALL,
+                CheckResults checkResults}) async {
   String testFileName =
       relativize(Uri.base, Platform.script, Platform.isWindows);
 
   print("""
 
 
 ===
 === NOTE: If this test fails, update [WHITE_LIST] in $testFileName
 ===
 
 
 """);
 
   var libraryRoot = currentDirectory.resolve('sdk/');
   var packageRoot =
       currentDirectory.resolve(Platform.packageRoot);
   var provider = new CompilerSourceFileProvider();
   var handler = new CollectingDiagnosticHandler(whiteList, provider);
   var options = <String>[Flags.analyzeOnly, '--categories=Client,Server',
       Flags.showPackageWarnings];
-  if (analyzeAll) options.add(Flags.analyzeAll);
-  if (analyzeMain) options.add(Flags.analyzeMain);
+  switch (mode) {
+    case AnalysisMode.URI:
+    case AnalysisMode.MAIN:
+      options.add(Flags.analyzeMain);
+      break;
+    case AnalysisMode.ALL:
+      options.add(Flags.analyzeAll);
+      break;
+    case AnalysisMode.TREE_SHAKING:
+      break;
+  }
   var compiler = new CompilerImpl(
       provider,
       null,
       handler,
       libraryRoot,
       packageRoot,
       options,
       {});
   String MESSAGE = """
 
 
 ===
 === ERROR: Unexpected result of analysis.
 ===
 === Please update [WHITE_LIST] in $testFileName
 ===
 """;
 
-  void onCompletion(_) {
-    bool result;
-    if (checkResults != null) {
-      result = checkResults(compiler, handler);
-    } else {
-      result = handler.checkResults();
+  if (mode == AnalysisMode.URI) {
+    for (Uri uri in uriList) {
+      await compiler.analyzeUri(uri);
     }
-    if (!result) {
-      print(MESSAGE);
-      exit(1);
-    }
+  } else if (mode != AnalysisMode.TREE_SHAKING) {
+    compiler.librariesToAnalyzeWhenRun = uriList;
+    await compiler.run(null);
+  } else {
+    await compiler.run(uriList.single);
   }
-  if (analyzeAll || analyzeMain) {
-    compiler.librariesToAnalyzeWhenRun = uriList;
-    return compiler.run(null).then(onCompletion);
+
+  bool result;
+  if (checkResults != null) {
+    result = checkResults(compiler, handler);
   } else {
-    return compiler.run(uriList.single).then(onCompletion);
+    result = handler.checkResults();
+  }
+  if (!result) {
+    print(MESSAGE);
+    exit(1);
   }
 }