Fix stat conformance tests to resolve links

LibTest/io/Directory/statSync_A01_t05.dart

@@ -24,7 +24,9 @@ main() async {
 }
 
 _main(Directory sandbox) async {
-  Link link = getTempLinkSync(parent: sandbox);
+  File file = getTempFileSync(parent: sandbox);
+  Link link = getTempLinkSync(parent: sandbox, target: file.path);
   Directory dir = new Directory(link.path);
-  Expect.equals(FileSystemEntityType.link, dir.statSync().type);
+  // Links should be resolved.
+  Expect.equals(FileSystemEntityType.file, dir.statSync().type);
 }

LibTest/io/Directory/stat_A01_t05.dart

@@ -24,11 +24,13 @@ main() async {
 }
 
 _main(Directory sandbox) async {
-  Link link = getTempLinkSync(parent: sandbox);
+  File file = getTempFileSync(parent: sandbox);
+  Link link = getTempLinkSync(parent: sandbox, target: file.path);
   Directory dir = new Directory(link.path);
   asyncStart();
   await dir.stat().then((FileStat fs) {
-    Expect.equals(FileSystemEntityType.link, fs.type);
+    // Links should be resolved.
+    Expect.equals(FileSystemEntityType.file, fs.type);
     asyncEnd();
   });
 }

LibTest/io/File/statSync_A01_t05.dart

@@ -26,5 +26,6 @@ main() async {
 _main(Directory sandbox) async {
   Link link = getTempLinkSync(parent: sandbox);
   File file = new File(link.path);
-  Expect.equals(FileSystemEntityType.link, file.statSync().type);
+  // Links should be resolved.
+  Expect.equals(FileSystemEntityType.directory, file.statSync().type);
 }

LibTest/io/File/stat_A01_t05.dart

@@ -28,7 +28,8 @@ _main(Directory sandbox) async {
   File file = new File(link.path);
   asyncStart();
   await file.stat().then((FileStat fs) {
-    Expect.equals(FileSystemEntityType.link, fs.type);
+    // Links should be resolved.
+    Expect.equals(FileSystemEntityType.directory, fs.type);
     asyncEnd();
   });
 }

LibTest/io/Link/statSync_A01_t01.dart

@@ -10,10 +10,9 @@
 ///
 /// If the call fails, returns a FileStat object with .type set to
 /// FileSystemEntityType.notFound and the other fields invalid.
-/// @description Checks that this method synchronously calls the operating
-/// system's stat() function
+/// @description Checks that this method calls the operating system's stat()
+/// function. Test directory
 /// @author [email protected]
-/// @issue 24821
 
 import "dart:io";
 import "../../../Utils/expect.dart";
@@ -24,6 +23,7 @@ main() async {
 }
 
 _main(Directory sandbox) async {
-  Link link = getTempLinkSync(parent: sandbox);
-  Expect.equals(FileSystemEntityType.link, link.statSync().type);
+  Directory dir = getTempDirectorySync(parent: sandbox);
+  Link link = new Link(dir.path);
+  Expect.equals(FileSystemEntityType.directory, link.statSync().type);
 }

LibTest/io/Link/statSync_A01_t04.dart

@@ -11,7 +11,7 @@
 /// If the call fails, returns a FileStat object with .type set to
 /// FileSystemEntityType.notFound and the other fields invalid.
 /// @description Checks that this method calls the operating system's stat()
-/// function. Test directory
+/// function. Test file
 /// @author [email protected]
 
 import "dart:io";
@@ -23,7 +23,7 @@ main() async {
 }
 
 _main(Directory sandbox) async {
-  Directory dir = getTempDirectorySync(parent: sandbox);
-  Link link = new Link(dir.path);
-  Expect.equals(FileSystemEntityType.directory, link.statSync().type);
+  File file = getTempFileSync(parent: sandbox);
+  Link link = new Link(file.path);
+  Expect.equals(FileSystemEntityType.file, link.statSync().type);
 }

LibTest/io/Link/stat_A01_t01.dart

@@ -11,9 +11,8 @@
 /// If the call fails, completes the future with a FileStat object with .type set
 /// to FileSystemEntityType.notFound and the other fields invalid.
 /// @description Checks that this method calls the operating system's stat()
-/// function
+/// function. Test directory
 /// @author [email protected]
-/// @issue 24821
 
 import "dart:io";
 import "../../../Utils/expect.dart";
@@ -24,15 +23,11 @@ main() async {
 }
 
 _main(Directory sandbox) async {
-  Link link = getTempLinkSync(parent: sandbox);
+  Directory dir = getTempDirectorySync(parent: sandbox);
+  Link link = new Link(dir.path);
   asyncStart();
   await link.stat().then((FileStat fs) {
-    if (Platform.isWindows) {
-      Expect.equals(FileSystemEntityType.link, fs.type);
-    } else {
-      Expect.equals(FileSystemEntityType.directory, fs.type);
-    }
-  }).then((_) {
+    Expect.equals(FileSystemEntityType.directory, fs.type);
     asyncEnd();
   });
 }

LibTest/io/Link/stat_A01_t04.dart

@@ -11,7 +11,7 @@
 /// If the call fails, completes the future with a FileStat object with .type set
 /// to FileSystemEntityType.notFound and the other fields invalid.
 /// @description Checks that this method calls the operating system's stat()
-/// function. Test directory
+/// function. Test file
 /// @author [email protected]
 
 import "dart:io";
@@ -23,11 +23,11 @@ main() async {
 }
 
 _main(Directory sandbox) async {
-  Directory dir = getTempDirectorySync(parent: sandbox);
-  Link link = new Link(dir.path);
+  File file = getTempFileSync(parent: sandbox);
+  Link link = new Link(file.path);
   asyncStart();
   await link.stat().then((FileStat fs) {
-    Expect.equals(FileSystemEntityType.directory, fs.type);
+    Expect.equals(FileSystemEntityType.file, fs.type);
     asyncEnd();
   });
 }