Add a bit more validation around comments

Author: minestarks

tests/cases/fourslash/unusedImports14FS.ts

@@ -2,11 +2,14 @@
 
 // @noUnusedLocals: true
 // @Filename: file2.ts
-//// [| import /* 1 */ A /* 2 */, /* 3 */ { x } from './a'; |]
+//// [| import /* 1 */ A /* 2 */, /* 3 */ { /* 4 */ x /* 5 */ } /* 6 */ from './a'; |]
 //// console.log(A);
 
 // @Filename: file1.ts
 //// export default 10;
 //// export var x = 10;
 
-verify.rangeAfterCodeFix("import /* 1 */ A /* 2 */ from './a';");
+
+// It's ambiguous which token comment /* 6 */ applies to or whether it should be removed.
+// In the current implementation the comment is left behind, but this behavior isn't a requirement.
+verify.rangeAfterCodeFix("import /* 1 */ A /* 2 */ /* 6 */ from './a';");