Implement 'edit.getRefactoring' for rename refactoring.

pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart

Index: pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart
diff --git a/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart b/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart
index 276ef5dd05f8a8ae48e6ace01e97bc808a4ee4d3..cf2b660a57255862a20353c075a9f6167360cea8 100644
--- a/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart
@@ -224,13 +224,13 @@ class Test {}
     refactoring.newName = null;
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Class name must not be null.");
     // empty
     refactoring.newName = '';
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Class name must not be empty.");
     // same
     refactoring.newName = 'Test';
@@ -252,13 +252,13 @@ test() {}
     refactoring.newName = null;
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Function name must not be null.");
     // empty
     refactoring.newName = '';
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Function name must not be empty.");
     // OK
     refactoring.newName = 'newName';
@@ -274,7 +274,7 @@ typedef Test();
     refactoring.newName = null;
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Function type alias name must not be null.");
     // OK
     refactoring.newName = 'NewName';
@@ -290,13 +290,13 @@ var test;
     refactoring.newName = null;
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Variable name must not be null.");
     // empty
     refactoring.newName = '';
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Variable name must not be empty.");
     // OK
     refactoring.newName = 'newName';
@@ -312,13 +312,13 @@ const TEST = 0;
     refactoring.newName = null;
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Constant name must not be null.");
     // empty
     refactoring.newName = '';
     assertRefactoringStatus(
         refactoring.checkNewName(),
-        RefactoringProblemSeverity.ERROR,
+        RefactoringProblemSeverity.FATAL,
         expectedMessage: "Constant name must not be empty.");
     // OK
     refactoring.newName = 'NEW_NAME';