Add test

Author: zhengbli

src/harness/fourslash.ts

@@ -2108,7 +2108,7 @@ namespace FourSlash {
          * Because codefixes are only applied on the working file, it is unsafe
          * to apply this more than once (consider a refactoring across files).
          */
-        public verifyRangeAfterCodeFix(expectedText: string, errorCode?: number) {
+        public verifyRangeAfterCodeFix(expectedText: string, errorCode?: number, includeWhiteSpace?: boolean) {
             const ranges = this.getRanges();
             if (ranges.length !== 1) {
                 this.raiseError("Exactly one range should be specified in the testfile.");
@@ -2120,7 +2120,11 @@ namespace FourSlash {
 
             const actualText = this.rangeText(ranges[0]);
 
-            if (this.removeWhitespace(actualText) !== this.removeWhitespace(expectedText)) {
+            const result = includeWhiteSpace
+                ? actualText === expectedText
+                : this.removeWhitespace(actualText) === this.removeWhitespace(expectedText)
+
+            if (!result) {
                 this.raiseError(`Actual text doesn't match expected text. Actual:\n'${actualText}'\nExpected:\n'${expectedText}'`);
             }
         }
@@ -3509,8 +3513,8 @@ namespace FourSlashInterface {
             this.DocCommentTemplate(/*expectedText*/ undefined, /*expectedOffset*/ undefined, /*empty*/ true);
         }
 
-        public rangeAfterCodeFix(expectedText: string, errorCode?: number): void {
-            this.state.verifyRangeAfterCodeFix(expectedText, errorCode);
+        public rangeAfterCodeFix(expectedText: string, errorCode?: number, includeWhiteSpace?: boolean): void {
+            this.state.verifyRangeAfterCodeFix(expectedText, errorCode, includeWhiteSpace);
         }
 
         public importFixAtPosition(expectedTextArray: string[], errorCode?: number): void {

tests/cases/fourslash/fourslash.ts

@@ -225,7 +225,7 @@ declare namespace FourSlashInterface {
         noMatchingBracePositionInCurrentFile(bracePosition: number): void;
         DocCommentTemplate(expectedText: string, expectedOffset: number, empty?: boolean): void;
         noDocCommentTemplate(): void;
-        rangeAfterCodeFix(expectedText: string, errorCode?: number): void;
+        rangeAfterCodeFix(expectedText: string, errorCode?: number, includeWhiteSpace?: boolean): void;
         importFixAtPosition(expectedTextArray: string[], errorCode?: number): void;
 
         navigationBar(json: any): void;

tests/cases/fourslash/unusedImports2FS.ts

@@ -2,8 +2,8 @@
 
 // @noUnusedLocals: true
 // @Filename: file2.ts
-//// [|import {Calculator} from "./file1"
-//// import {test} from "./file1"|]
+//// [|import {test} from "./file1"
+//// import {Calculator} from "./file1"|]
 
 //// var x = new Calculator();
 //// x.handleChar();
@@ -16,4 +16,4 @@
 ////
 //// }
 
-verify.rangeAfterCodeFix(`import {Calculator} from "./file1"`);
+verify.rangeAfterCodeFix(`import {Calculator} from "./file1"`, /*errorCode*/ undefined, /*includeWhiteSpace*/ true);