Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/serve/web_socket/path_to_urls_errors_test.dart

-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS d.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 pub_tests;
-
-import 'package:json_rpc_2/error_code.dart' as rpc_error_code;
-import 'package:path/path.dart' as p;
-
-import '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-import '../utils.dart';
-
-main() {
-  // TODO(rnystrom): Split into independent tests.
-  initConfig();
-  integration("pathToUrls errors on bad inputs", () {
-    d.dir("foo", [
-      d.libPubspec("foo", "1.0.0"),
-      d.dir("web", [
-        d.file("foo.txt", "foo")
-      ])
-    ]).create();
-
-    d.dir(appPath, [
-      d.appPubspec({"foo": {"path": "../foo"}}),
-      d.file("top-level.txt", "top-level"),
-      d.dir("bin", [
-        d.file("foo.txt", "foo"),
-      ]),
-      d.dir("lib", [
-        d.file("myapp.dart", "myapp"),
-      ])
-    ]).create();
-
-    pubServe(shouldGetFirst: true);
-
-    // Bad arguments.
-    expectWebSocketError("pathToUrls", {"path": 123},
-        rpc_error_code.INVALID_PARAMS,
-        'Parameter "path" for method "pathToUrls" must be a string, but was '
-            '123.');
-
-    expectWebSocketError("pathToUrls", {"path": "main.dart", "line": 12.34},
-        rpc_error_code.INVALID_PARAMS,
-        'Parameter "line" for method "pathToUrls" must be an integer, but was '
-            '12.34.');
-
-    // Unserved directories.
-    expectNotServed(p.join('bin', 'foo.txt'));
-    expectNotServed(p.join('nope', 'foo.txt'));
-    expectNotServed(p.join("..", "bar", "lib", "bar.txt"));
-    expectNotServed(p.join("..", "foo", "web", "foo.txt"));
-
-    endPubServe();
-  });
-}
-
-void expectNotServed(String path) {
-  expectWebSocketError("pathToUrls", {"path": path}, NOT_SERVED,
-      'Asset path "$path" is not currently being served.');
-}