Issue 23133. Fix for restoring 'package:' uris on Windows.

pkg/analyzer/test/source/package_map_resolver_test.dart

Index: pkg/analyzer/test/source/package_map_resolver_test.dart
diff --git a/pkg/analyzer/test/source/package_map_resolver_test.dart b/pkg/analyzer/test/source/package_map_resolver_test.dart
index 6ed6817934abcec3793680b8207227f85c270831..e4b0bb6d5f20c5b37504b77fed62f9074193d05e 100644
--- a/pkg/analyzer/test/source/package_map_resolver_test.dart
+++ b/pkg/analyzer/test/source/package_map_resolver_test.dart
@@ -176,7 +176,7 @@ class _PackageMapUriResolverTest {
     }
   }
 
-  void test_restoreAmbiguous() {
+  void test_restoreAbsolute_ambiguous() {
     const file1 = '/foo1/lib/bar.dart';
     const file2 = '/foo2/lib/bar.dart';
     provider.newFile(file1, 'library bar');
@@ -200,7 +200,7 @@ class _PackageMapUriResolverTest {
     expect(resolver.restoreAbsolute(source2), isNull);
   }
 
-  void test_restoreLongestMatch() {
+  void test_restoreAbsolute_longestMatch() {
     const file1 = '/foo1/bar1/lib.dart';
     const file2 = '/foo2/bar2/lib.dart';
     provider.newFile(file1, 'library lib');