Format all tests.

tests/standalone/io/test_extension_test.dart

 // 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.
 //
 // Dart test program for testing native extensions.
 
 import "package:expect/expect.dart";
 import "package:path/path.dart";
 import 'dart:async';
 import 'dart:io';
@@ skipping 15 matching lines @@
 // Returns a list containing the source file name in the first element and the
 // target file name in the second element.
 List<String> getExtensionNames(String arch) {
   switch (Platform.operatingSystem) {
     case 'android':
     case 'linux':
       return ['libtest_extension.so', 'libtest_extension$arch.so'];
     case 'macos':
       return ['libtest_extension.dylib', 'libtest_extension$arch.dylib'];
     case 'windows':
-      return ['test_extension.dll','test_extension$arch.dll'];
+      return ['test_extension.dll', 'test_extension$arch.dll'];
     default:
       Expect.fail('Unknown operating system ${Platform.operatingSystem}');
   }
 }
 
 String getExtensionPath(String buildDirectory, String filename) {
   switch (Platform.operatingSystem) {
     case 'android':
     case 'linux':
       return join(buildDirectory, 'lib.target', filename);
@@ skipping 30 matching lines @@
   if (withArchSuffix) {
     String arch = getArchFromBuildDir(buildDirectory);
     fileNames = getExtensionNames(arch);
   } else {
     fileNames = getExtensionNames('');
   }
 
   // Copy test_extension shared library, test_extension.dart and
   // test_extension_tester.dart to the temporary test directory.
   return copyFileToDirectory(getExtensionPath(buildDirectory, fileNames[0]),
-                      join(testDirectory, fileNames[1])).then((_) {
+      join(testDirectory, fileNames[1])).then((_) {
     var extensionDartFile = join(scriptDirectory, 'test_extension.dart');
     return copyFileToDirectory(extensionDartFile, testDirectory);
   }).then((_) {
     var testExtensionTesterFile =
         join(scriptDirectory, 'test_extension_tester.dart');
     return copyFileToDirectory(testExtensionTesterFile, testDirectory);
   }).then((_) {
     var script = join(testDirectory, 'test_extension_tester.dart');
     return Process.run(Platform.executable, [script]);
-  })..then((ProcessResult result) {
-    if (result.exitCode != 0) {
-      print('Subprocess failed with exit code ${result.exitCode}');
-      print('stdout:');
-      print('${result.stdout}');
-      print('stderr:');
-      print('${result.stderr}');
-    }
-    Expect.equals(0, result.exitCode);
-    tempDirectory.deleteSync(recursive: true);
-  })..catchError((_) {
-    tempDirectory.deleteSync(recursive: true);
-  });
+  })
+    ..then((ProcessResult result) {
+      if (result.exitCode != 0) {
+        print('Subprocess failed with exit code ${result.exitCode}');
+        print('stdout:');
+        print('${result.stdout}');
+        print('stderr:');
+        print('${result.stderr}');
+      }
+      Expect.equals(0, result.exitCode);
+      tempDirectory.deleteSync(recursive: true);
+    })
+    ..catchError((_) {
+      tempDirectory.deleteSync(recursive: true);
+    });
 }
 
 Future testWithArchSuffix() {
   return testExtension(true);
 }
 
 Future testWithoutArchSuffix() {
   return testExtension(false);
 }
 
 main() async {
   await testWithArchSuffix();
   await testWithoutArchSuffix();
 }