Enable language and isolate tests using the dart test runner.

tools/testing/dart/test_config_utils.dart

-// Copyright (c) 2011, 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("test_config_utils");
-
-/**
- * TestUtils is a collection of utility methods used to write
- * test_config.dart scripts for test suites.
- */
-class TestUtils {
-
-  /**
-   * Get a list of argument lists for the dart shell command.
-   */
-  static List<List<String>> argumentLists(String filename,
-                                          Map optionsFromFile,
-                                          Map configuration) {
-    List args = ["--ignore-unrecognized-flags"];
-    if (configuration["checked"]) {
-      args.add("--enable_type_checks");
-    }
-    if (configuration["component"] == "leg") {
-      args.add("--enable_leg");
-    }
-    if (configuration["component"] == "dartc") {
-      if (configuration["mode"] == "release") {
-        args.add("--optimize");
-      }
-    }
-
-    List<String> dartOptions = optionsFromFile["dartOptions"];
-    args.addAll(dartOptions == null ? [filename] : dartOptions);
-
-    var result = new List<List<String>>();
-    List<List<String>> vmOptionsList = optionsFromFile["vmOptions"];
-    if (vmOptionsList.isEmpty()) {
-      result.add(args);
-    } else {
-      for (var vmOptions in vmOptionsList) {
-        vmOptions.addAll(args);
-        result.add(vmOptions);
-      }
-    }
-
-    return result;
-  }
-
-  /**
-   * Extract test options from the test file itself.
-   */
-  static Map optionsFromFile(String filename, Map configuration) {
-    RegExp testOptionsRegExp = const RegExp(@"// VMOptions=(.*)");
-    RegExp dartOptionsRegExp = const RegExp(@"// DartOptions=(.*)");
-
-    // Read the entire file into a byte buffer and transform it to a
-    // String. This will treat the file as ascii but the only parts
-    // we are interested in will be ascii in any case.
-    File file = new File(filename);
-    file.openSync();
-    List chars = new List(file.lengthSync());
-    var offset = 0;
-    while (offset != chars.length) {
-      offset += file.readListSync(chars, offset, chars.length - offset);
-    }
-    file.closeSync();
-    String contents = new String.fromCharCodes(chars);
-    chars = null;
-
-    // Find the options in the file.
-    List<List> result = new List<List>();
-    List<String> dartOptions;
-    bool isNegative = false;
-
-    Iterable<Match> matches = testOptionsRegExp.allMatches(contents);
-    for (var match in matches) {
-      result.add(match[1].split(' ').filter((e) => e != ''));
-    }
-
-    matches = dartOptionsRegExp.allMatches(contents);
-    for (var match in matches) {
-      if (dartOptions != null) {
-        throw new Exception(
-            'More than one "// DartOptions=" line in test $filename');
-      }
-      dartOptions = match[1].split(' ').filter((e) => e != '');
-    }
-
-    if (contents.contains("@compile-error") ||
-        contents.contains("@runtime-error")) {
-      isNegative = true;
-    } else if (contents.contains("@dynamic-type-error") &&
-               configuration['checked']) {
-      isNegative = true;
-    }
-
-    return { "vmOptions": result,
-             "dartOptions": dartOptions,
-             "isNegative" : isNegative };
-  }
-}