Revert "Revert "Use native async/await support in pub.""

sdk/lib/_internal/pub_generated/test/io_test.dart

Index: sdk/lib/_internal/pub_generated/test/io_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/io_test.dart b/sdk/lib/_internal/pub_generated/test/io_test.dart
deleted file mode 100644
index 056843fc6de462f67f892163be3b93b16693ee64..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/test/io_test.dart
+++ /dev/null
@@ -1,371 +0,0 @@
-// Copyright (c) 2012, 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 io_test;
-
-import 'dart:async';
-import 'dart:io';
-
-import 'package:path/path.dart' as path;
-import 'package:unittest/unittest.dart';
-
-import '../lib/src/io.dart';
-import 'test_pub.dart';
-
-main() {
-  initConfig();
-
-  group('listDir', () {
-    test('ignores hidden files by default', () {
-      expect(withTempDir((temp) {
-        writeTextFile(path.join(temp, 'file1.txt'), '');
-        writeTextFile(path.join(temp, 'file2.txt'), '');
-        writeTextFile(path.join(temp, '.file3.txt'), '');
-        createDir(path.join(temp, '.subdir'));
-        writeTextFile(path.join(temp, '.subdir', 'file3.txt'), '');
-
-        expect(
-            listDir(temp, recursive: true),
-            unorderedEquals([path.join(temp, 'file1.txt'), path.join(temp, 'file2.txt')]));
-      }), completes);
-    });
-
-    test('includes hidden files when told to', () {
-      expect(withTempDir((temp) {
-        writeTextFile(path.join(temp, 'file1.txt'), '');
-        writeTextFile(path.join(temp, 'file2.txt'), '');
-        writeTextFile(path.join(temp, '.file3.txt'), '');
-        createDir(path.join(temp, '.subdir'));
-        writeTextFile(path.join(temp, '.subdir', 'file3.txt'), '');
-
-        expect(
-            listDir(temp, recursive: true, includeHidden: true),
-            unorderedEquals(
-                [
-                    path.join(temp, 'file1.txt'),
-                    path.join(temp, 'file2.txt'),
-                    path.join(temp, '.file3.txt'),
-                    path.join(temp, '.subdir'),
-                    path.join(temp, '.subdir', 'file3.txt')]));
-      }), completes);
-    });
-
-    test("doesn't ignore hidden files above the directory being listed", () {
-      expect(withTempDir((temp) {
-        var dir = path.join(temp, '.foo', 'bar');
-        ensureDir(dir);
-        writeTextFile(path.join(dir, 'file1.txt'), '');
-        writeTextFile(path.join(dir, 'file2.txt'), '');
-        writeTextFile(path.join(dir, 'file3.txt'), '');
-
-        expect(
-            listDir(dir, recursive: true),
-            unorderedEquals(
-                [
-                    path.join(dir, 'file1.txt'),
-                    path.join(dir, 'file2.txt'),
-                    path.join(dir, 'file3.txt')]));
-      }), completes);
-    });
-  });
-
-  group('canonicalize', () {
-    test('resolves a non-link', () {
-      expect(withCanonicalTempDir((temp) {
-        var filePath = path.join(temp, 'file');
-        writeTextFile(filePath, '');
-        expect(canonicalize(filePath), equals(filePath));
-      }), completes);
-    });
-
-    test('resolves a non-existent file', () {
-      expect(withCanonicalTempDir((temp) {
-        expect(
-            canonicalize(path.join(temp, 'nothing')),
-            equals(path.join(temp, 'nothing')));
-      }), completes);
-    });
-
-    test('resolves a symlink', () {
-      expect(withCanonicalTempDir((temp) {
-        createDir(path.join(temp, 'linked-dir'));
-        createSymlink(path.join(temp, 'linked-dir'), path.join(temp, 'dir'));
-        expect(
-            canonicalize(path.join(temp, 'dir')),
-            equals(path.join(temp, 'linked-dir')));
-      }), completes);
-    });
-
-    test('resolves a relative symlink', () {
-      expect(withCanonicalTempDir((temp) {
-        createDir(path.join(temp, 'linked-dir'));
-        createSymlink(
-            path.join(temp, 'linked-dir'),
-            path.join(temp, 'dir'),
-            relative: true);
-        expect(
-            canonicalize(path.join(temp, 'dir')),
-            equals(path.join(temp, 'linked-dir')));
-      }), completes);
-    });
-
-    test('resolves a single-level horizontally recursive symlink', () {
-      expect(withCanonicalTempDir((temp) {
-        var linkPath = path.join(temp, 'foo');
-        createSymlink(linkPath, linkPath);
-        expect(canonicalize(linkPath), equals(linkPath));
-      }), completes);
-    });
-
-    test('resolves a multi-level horizontally recursive symlink', () {
-      expect(withCanonicalTempDir((temp) {
-        var fooPath = path.join(temp, 'foo');
-        var barPath = path.join(temp, 'bar');
-        var bazPath = path.join(temp, 'baz');
-        createSymlink(barPath, fooPath);
-        createSymlink(bazPath, barPath);
-        createSymlink(fooPath, bazPath);
-        expect(canonicalize(fooPath), equals(fooPath));
-        expect(canonicalize(barPath), equals(barPath));
-        expect(canonicalize(bazPath), equals(bazPath));
-
-        createSymlink(fooPath, path.join(temp, 'outer'));
-        expect(canonicalize(path.join(temp, 'outer')), equals(fooPath));
-      }), completes);
-    });
-
-    test('resolves a broken symlink', () {
-      expect(withCanonicalTempDir((temp) {
-        createSymlink(path.join(temp, 'nonexistent'), path.join(temp, 'foo'));
-        expect(
-            canonicalize(path.join(temp, 'foo')),
-            equals(path.join(temp, 'nonexistent')));
-      }), completes);
-    });
-
-    test('resolves multiple nested symlinks', () {
-      expect(withCanonicalTempDir((temp) {
-        var dir1 = path.join(temp, 'dir1');
-        var dir2 = path.join(temp, 'dir2');
-        var subdir1 = path.join(dir1, 'subdir1');
-        var subdir2 = path.join(dir2, 'subdir2');
-        createDir(dir2);
-        createDir(subdir2);
-        createSymlink(dir2, dir1);
-        createSymlink(subdir2, subdir1);
-        expect(
-            canonicalize(path.join(subdir1, 'file')),
-            equals(path.join(subdir2, 'file')));
-      }), completes);
-    });
-
-    test('resolves a nested vertical symlink', () {
-      expect(withCanonicalTempDir((temp) {
-        var dir1 = path.join(temp, 'dir1');
-        var dir2 = path.join(temp, 'dir2');
-        var subdir = path.join(dir1, 'subdir');
-        createDir(dir1);
-        createDir(dir2);
-        createSymlink(dir2, subdir);
-        expect(
-            canonicalize(path.join(subdir, 'file')),
-            equals(path.join(dir2, 'file')));
-      }), completes);
-    });
-
-    test('resolves a vertically recursive symlink', () {
-      expect(withCanonicalTempDir((temp) {
-        var dir = path.join(temp, 'dir');
-        var subdir = path.join(dir, 'subdir');
-        createDir(dir);
-        createSymlink(dir, subdir);
-        expect(
-            canonicalize(
-                path.join(temp, 'dir', 'subdir', 'subdir', 'subdir', 'subdir', 'file')),
-            equals(path.join(dir, 'file')));
-      }), completes);
-    });
-
-    test(
-        'resolves a symlink that links to a path that needs more resolving',
-        () {
-      expect(withCanonicalTempDir((temp) {
-        var dir = path.join(temp, 'dir');
-        var linkdir = path.join(temp, 'linkdir');
-        var linkfile = path.join(dir, 'link');
-        createDir(dir);
-        createSymlink(dir, linkdir);
-        createSymlink(path.join(linkdir, 'file'), linkfile);
-        expect(canonicalize(linkfile), equals(path.join(dir, 'file')));
-      }), completes);
-    });
-
-    test('resolves a pair of pathologically-recursive symlinks', () {
-      expect(withCanonicalTempDir((temp) {
-        var foo = path.join(temp, 'foo');
-        var subfoo = path.join(foo, 'subfoo');
-        var bar = path.join(temp, 'bar');
-        var subbar = path.join(bar, 'subbar');
-        createSymlink(subbar, foo);
-        createSymlink(subfoo, bar);
-        expect(
-            canonicalize(subfoo),
-            equals(path.join(subfoo, 'subbar', 'subfoo')));
-      }), completes);
-    });
-  });
-
-  testExistencePredicate(
-      "entryExists",
-      entryExists,
-      forFile: true,
-      forFileSymlink: true,
-      forMultiLevelFileSymlink: true,
-      forDirectory: true,
-      forDirectorySymlink: true,
-      forMultiLevelDirectorySymlink: true,
-      forBrokenSymlink: true,
-      forMultiLevelBrokenSymlink: true);
-
-  testExistencePredicate(
-      "linkExists",
-      linkExists,
-      forFile: false,
-      forFileSymlink: true,
-      forMultiLevelFileSymlink: true,
-      forDirectory: false,
-      forDirectorySymlink: true,
-      forMultiLevelDirectorySymlink: true,
-      forBrokenSymlink: true,
-      forMultiLevelBrokenSymlink: true);
-
-  testExistencePredicate(
-      "fileExists",
-      fileExists,
-      forFile: true,
-      forFileSymlink: true,
-      forMultiLevelFileSymlink: true,
-      forDirectory: false,
-      forDirectorySymlink: false,
-      forMultiLevelDirectorySymlink: false,
-      forBrokenSymlink: false,
-      forMultiLevelBrokenSymlink: false);
-
-  testExistencePredicate(
-      "dirExists",
-      dirExists,
-      forFile: false,
-      forFileSymlink: false,
-      forMultiLevelFileSymlink: false,
-      forDirectory: true,
-      forDirectorySymlink: true,
-      forMultiLevelDirectorySymlink: true,
-      forBrokenSymlink: false,
-      forMultiLevelBrokenSymlink: false);
-}
-
-void testExistencePredicate(String name, bool predicate(String path),
-    {bool forFile, bool forFileSymlink, bool forMultiLevelFileSymlink,
-    bool forDirectory, bool forDirectorySymlink, bool forMultiLevelDirectorySymlink,
-    bool forBrokenSymlink, bool forMultiLevelBrokenSymlink}) {
-  group(name, () {
-    test('returns $forFile for a file', () {
-      expect(withTempDir((temp) {
-        var file = path.join(temp, "test.txt");
-        writeTextFile(file, "contents");
-        expect(predicate(file), equals(forFile));
-      }), completes);
-    });
-
-    test('returns $forDirectory for a directory', () {
-      expect(withTempDir((temp) {
-        var file = path.join(temp, "dir");
-        createDir(file);
-        expect(predicate(file), equals(forDirectory));
-      }), completes);
-    });
-
-    test('returns $forDirectorySymlink for a symlink to a directory', () {
-      expect(withTempDir((temp) {
-        var targetPath = path.join(temp, "dir");
-        var symlinkPath = path.join(temp, "linkdir");
-        createDir(targetPath);
-        createSymlink(targetPath, symlinkPath);
-        expect(predicate(symlinkPath), equals(forDirectorySymlink));
-      }), completes);
-    });
-
-    test(
-        'returns $forMultiLevelDirectorySymlink for a multi-level symlink to '
-            'a directory',
-        () {
-      expect(withTempDir((temp) {
-        var targetPath = path.join(temp, "dir");
-        var symlink1Path = path.join(temp, "link1dir");
-        var symlink2Path = path.join(temp, "link2dir");
-        createDir(targetPath);
-        createSymlink(targetPath, symlink1Path);
-        createSymlink(symlink1Path, symlink2Path);
-        expect(predicate(symlink2Path), equals(forMultiLevelDirectorySymlink));
-      }), completes);
-    });
-
-    test('returns $forBrokenSymlink for a broken symlink', () {
-      expect(withTempDir((temp) {
-        var targetPath = path.join(temp, "dir");
-        var symlinkPath = path.join(temp, "linkdir");
-        createDir(targetPath);
-        createSymlink(targetPath, symlinkPath);
-        deleteEntry(targetPath);
-        expect(predicate(symlinkPath), equals(forBrokenSymlink));
-      }), completes);
-    });
-
-    test(
-        'returns $forMultiLevelBrokenSymlink for a multi-level broken symlink',
-        () {
-      expect(withTempDir((temp) {
-        var targetPath = path.join(temp, "dir");
-        var symlink1Path = path.join(temp, "link1dir");
-        var symlink2Path = path.join(temp, "link2dir");
-        createDir(targetPath);
-        createSymlink(targetPath, symlink1Path);
-        createSymlink(symlink1Path, symlink2Path);
-        deleteEntry(targetPath);
-        expect(predicate(symlink2Path), equals(forMultiLevelBrokenSymlink));
-      }), completes);
-    });
-
-    // Windows doesn't support symlinking to files.
-    if (Platform.operatingSystem != 'windows') {
-      test('returns $forFileSymlink for a symlink to a file', () {
-        expect(withTempDir((temp) {
-          var targetPath = path.join(temp, "test.txt");
-          var symlinkPath = path.join(temp, "link.txt");
-          writeTextFile(targetPath, "contents");
-          createSymlink(targetPath, symlinkPath);
-          expect(predicate(symlinkPath), equals(forFileSymlink));
-        }), completes);
-      });
-
-      test(
-          'returns $forMultiLevelFileSymlink for a multi-level symlink to a ' 'file',
-          () {
-        expect(withTempDir((temp) {
-          var targetPath = path.join(temp, "test.txt");
-          var symlink1Path = path.join(temp, "link1.txt");
-          var symlink2Path = path.join(temp, "link2.txt");
-          writeTextFile(targetPath, "contents");
-          createSymlink(targetPath, symlink1Path);
-          createSymlink(symlink1Path, symlink2Path);
-          expect(predicate(symlink2Path), equals(forMultiLevelFileSymlink));
-        }), completes);
-      });
-    }
-  });
-}
-
-/// Like [withTempDir], but canonicalizes the path before passing it to [fn].
-Future withCanonicalTempDir(Future fn(String path)) =>
-    withTempDir((temp) => fn(canonicalize(temp)));