fixes #219, able to compile multiple entry points

lib/src/testing.dart

Index: lib/src/testing.dart
diff --git a/lib/src/testing.dart b/lib/src/testing.dart
deleted file mode 100644
index 5757f93054d812b15f7bd3fd0738e04e2bc24872..0000000000000000000000000000000000000000
--- a/lib/src/testing.dart
+++ /dev/null
@@ -1,252 +0,0 @@
-// Copyright (c) 2015, 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 dev_compiler.src.testing;
-
-import 'dart:collection' show Queue;
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/generated/ast.dart';
-import 'package:analyzer/src/generated/engine.dart'
-    show AnalysisContext, AnalysisEngine;
-import 'package:analyzer/src/generated/error.dart';
-import 'package:logging/logging.dart';
-import 'package:source_span/source_span.dart';
-import 'package:test/test.dart';
-
-import 'package:dev_compiler/strong_mode.dart';
-
-import 'analysis_context.dart';
-import 'dependency_graph.dart' show runtimeFilesForServerMode;
-import 'info.dart';
-import 'options.dart';
-import 'utils.dart';
-
-/// Run the checker on a program with files contents as indicated in
-/// [testFiles].
-///
-/// This function makes several assumptions to make it easier to describe error
-/// expectations:
-///
-///   * a file named `/main.dart` exists in [testFiles].
-///   * all expected failures are listed in the source code using comments
-///   immediately in front of the AST node that should contain the error.
-///   * errors are formatted as a token `level:Type`, where `level` is the
-///   logging level were the error would be reported at, and `Type` is the
-///   concrete subclass of [StaticInfo] that denotes the error.
-///
-/// For example, to check that an assignment produces a warning about a boxing
-/// conversion, you can describe the test as follows:
-///
-///     testChecker({
-///       '/main.dart': '''
-///           testMethod() {
-///             dynamic x = /*warning:Box*/3;
-///           }
-///       '''
-///     });
-///
-void testChecker(Map<String, String> testFiles, {String sdkDir,
-    customUrlMappings: const {}, relaxedCasts: true,
-    inferDownwards: StrongModeOptions.inferDownwardsDefault,
-    inferFromOverrides: StrongModeOptions.inferFromOverridesDefault,
-    inferTransitively: StrongModeOptions.inferTransitivelyDefault,
-    nonnullableTypes: StrongModeOptions.NONNULLABLE_TYPES}) {
-  expect(testFiles.containsKey('/main.dart'), isTrue,
-      reason: '`/main.dart` is missing in testFiles');
-
-  var provider = createTestResourceProvider(testFiles);
-  var uriResolver = new TestUriResolver(provider);
-  var context = AnalysisEngine.instance.createAnalysisContext();
-  context.sourceFactory = createSourceFactory(new SourceResolverOptions(
-      customUrlMappings: customUrlMappings,
-      useMockSdk: sdkDir == null,
-      dartSdkPath: sdkDir,
-      entryPointFile: '/main.dart'), fileResolvers: [uriResolver]);
-
-  var checker = new StrongChecker(context, new StrongModeOptions(
-      relaxedCasts: relaxedCasts,
-      inferDownwards: inferDownwards,
-      inferFromOverrides: inferFromOverrides,
-      inferTransitively: inferTransitively,
-      nonnullableTypes: nonnullableTypes,
-      hints: true));
-
-  // Run the checker on /main.dart.
-  var mainSource = uriResolver.resolveAbsolute(new Uri.file('/main.dart'));
-  var initialLibrary = context.resolveCompilationUnit2(mainSource, mainSource);
-
-  // Extract expectations from the comments in the test files, and
-  // check that all errors we emit are included in the expected map.
-  var allLibraries = reachableLibraries(initialLibrary.element.library);
-  for (var lib in allLibraries) {
-    for (var unit in lib.units) {
-      if (unit.source.uri.scheme == 'dart') continue;
-
-      var errorInfo = checker.computeErrors(unit.source);
-      new _ExpectedErrorVisitor(errorInfo.errors).validate(unit.unit);
-    }
-  }
-}
-
-/// Creates a [MemoryResourceProvider] with test data
-MemoryResourceProvider createTestResourceProvider(
-    Map<String, String> testFiles) {
-  var provider = new MemoryResourceProvider();
-  runtimeFilesForServerMode().forEach((filepath) {
-    testFiles['/dev_compiler_runtime/$filepath'] =
-        '/* test contents of $filepath */';
-  });
-  testFiles.forEach((key, value) {
-    var scheme = 'package:';
-    if (key.startsWith(scheme)) {
-      key = '/packages/${key.substring(scheme.length)}';
-    }
-    provider.newFile(key, value);
-  });
-  return provider;
-}
-
-class TestUriResolver extends ResourceUriResolver {
-  final MemoryResourceProvider provider;
-  TestUriResolver(provider)
-      : provider = provider,
-        super(provider);
-  resolveAbsolute(Uri uri) {
-    if (uri.scheme == 'package') {
-      return (provider.getResource('/packages/' + uri.path) as File)
-          .createSource(uri);
-    }
-    return super.resolveAbsolute(uri);
-  }
-}
-
-class _ExpectedErrorVisitor extends UnifyingAstVisitor {
-  final Set<AnalysisError> _actualErrors;
-  CompilationUnit _unit;
-  String _unitSourceCode;
-
-  _ExpectedErrorVisitor(List<AnalysisError> actualErrors)
-      : _actualErrors = new Set.from(actualErrors);
-
-  validate(CompilationUnit unit) {
-    _unit = unit;
-    // This reads the file. Only safe because tests use MemoryFileSystem.
-    _unitSourceCode = unit.element.source.contents.data;
-
-    // Visit the compilation unit.
-    unit.accept(this);
-
-    if (_actualErrors.isNotEmpty) {
-      var actualMsgs = _actualErrors.map(_formatActualError).join('\n');
-      fail('Unexpected errors reported by checker:\n\n$actualMsgs');
-    }
-  }
-
-  visitNode(AstNode node) {
-    var token = node.beginToken;
-    var comment = token.precedingComments;
-    // Use error marker found in an immediately preceding comment,
-    // and attach it to the outermost expression that starts at that token.
-    if (comment != null) {
-      while (comment.next != null) {
-        comment = comment.next;
-      }
-      if (comment.end == token.offset && node.parent.beginToken != token) {
-        var commentText = '$comment';
-        var start = commentText.lastIndexOf('/*');
-        var end = commentText.lastIndexOf('*/');
-        if (start != -1 && end != -1) {
-          expect(start, lessThan(end));
-          var errors = commentText.substring(start + 2, end).split(',');
-          var expectations =
-              errors.map(_ErrorExpectation.parse).where((x) => x != null);
-
-          for (var e in expectations) _expectError(node, e);
-        }
-      }
-    }
-    return super.visitNode(node);
-  }
-
-  void _expectError(AstNode node, _ErrorExpectation expected) {
-
-    // See if we can find the expected error in our actual errors
-    for (var actual in _actualErrors) {
-      if (actual.offset == node.offset && actual.length == node.length) {
-        var actualMsg = _formatActualError(actual);
-        expect(_actualErrorLevel(actual), expected.level,
-            reason: 'expected different error code at:\n\n$actualMsg');
-        expect(errorCodeName(actual.errorCode), expected.typeName,
-            reason: 'expected different error type at:\n\n$actualMsg');
-
-        // We found it. Stop the search.
-        _actualErrors.remove(actual);
-        return;
-      }
-    }
-
-    var span = _createSpan(node.offset, node.length);
-    var levelName = expected.level.name.toLowerCase();
-    var msg = span.message(expected.typeName, color: colorOf(levelName));
-    fail('expected error was not reported at:\n\n$levelName: $msg');
-  }
-
-  Level _actualErrorLevel(AnalysisError actual) {
-    return const <ErrorSeverity, Level>{
-      ErrorSeverity.ERROR: Level.SEVERE,
-      ErrorSeverity.WARNING: Level.WARNING,
-      ErrorSeverity.INFO: Level.INFO
-    }[actual.errorCode.errorSeverity];
-  }
-
-  String _formatActualError(AnalysisError actual) {
-    var span = _createSpan(actual.offset, actual.length);
-    var levelName = _actualErrorLevel(actual).name.toLowerCase();
-    var msg = span.message(actual.message, color: colorOf(levelName));
-    return '$levelName: [${errorCodeName(actual.errorCode)}] $msg';
-  }
-
-  SourceSpan _createSpan(int offset, int len) {
-    return createSpanHelper(_unit.lineInfo, offset, offset + len,
-        _unit.element.source, _unitSourceCode);
-  }
-}
-
-/// Describes an expected message that should be produced by the checker.
-class _ErrorExpectation {
-  final Level level;
-  final String typeName;
-  _ErrorExpectation(this.level, this.typeName);
-
-  static _ErrorExpectation _parse(String descriptor) {
-    var tokens = descriptor.split(':');
-    expect(tokens.length, 2, reason: 'invalid error descriptor');
-    var name = tokens[0].toUpperCase();
-    var typeName = tokens[1];
-
-    var level =
-        Level.LEVELS.firstWhere((l) => l.name == name, orElse: () => null);
-    expect(level, isNotNull,
-        reason: 'invalid level in error descriptor: `${tokens[0]}`');
-    expect(typeName, isNotNull,
-        reason: 'invalid type in error descriptor: ${tokens[1]}');
-    return new _ErrorExpectation(level, typeName);
-  }
-
-  static _ErrorExpectation parse(String descriptor) {
-    descriptor = descriptor.trim();
-    var tokens = descriptor.split(' ');
-    if (tokens.length == 1) return _parse(tokens[0]);
-    expect(tokens.length, 4, reason: 'invalid error descriptor');
-    expect(tokens[1], "should", reason: 'invalid error descriptor');
-    expect(tokens[2], "be", reason: 'invalid error descriptor');
-    if (tokens[0] == "pass") return null;
-    // TODO(leafp) For now, we just use whatever the current expectation is,
-    // eventually we could do more automated reporting here.
-    return _parse(tokens[0]);
-  }
-
-  String toString() => '$level $typeName';
-}