Rename the package to "test".

test/util/string_literal_iterator_test.dart

 // 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.
 
 @TestOn("vm")
 
 import 'package:analyzer/analyzer.dart';
-import 'package:unittest/unittest.dart';
-import 'package:unittest/src/util/string_literal_iterator.dart';
+import 'package:test/test.dart';
+import 'package:test/src/util/string_literal_iterator.dart';
 
 final _offset = "final str = ".length;
 
 void main() {
   group("returns simple characters in", () {
     test("a single simple string", () {
       var iter = _parse('"abc"');
 
       expect(iter.current, isNull);
       expect(iter.offset, equals(_offset));
@@ skipping 216 matching lines @@
   }, 'is the rune "$char"');
 }
 
 /// Parses [dart], which should be a string literal, into a
 /// [StringLiteralIterator].
 StringLiteralIterator _parse(String dart) {
   var literal = parseCompilationUnit("final str = $dart;")
       .declarations.single.variables.variables.single.initializer;
   return new StringLiteralIterator(literal);
 }