Syncing test.toml and updating the test code for reverse-string (#2648)

* Syncing test.toml and updating the test code

* Updating proof solution

* Running prettier

* Skipping the tests requiring segmenter

* Adding instructions.append.md

* Adding prettier ignore

Author: jagdish-15

exercises/practice/reverse-string/.docs/instructions.append.md

@@ -0,0 +1,6 @@
+<!-- prettier-ignore-start -->
+~~~exercism/advanced
+If you solve this using the CLI, there are test cases that require you to deal with complex characters.
+You can optionally enable these tests by removing `.skip` from the test.
+~~~
+<!-- prettier-ignore-end -->

exercises/practice/reverse-string/.meta/config.json

@@ -5,6 +5,7 @@
   "contributors": [
     "ankorGH",
     "d-vail",
+    "jagdish-15",
     "ovidiu141",
     "SleeplessByte"
   ],

exercises/practice/reverse-string/.meta/proof.ci.js

@@ -1,7 +1,11 @@
 export const reverseString = (string) => {
   let revString = '';
-  for (let i = string.length - 1; i >= 0; i -= 1) {
-    revString += string[i];
+  let characters = Array.from(
+    new Intl.Segmenter().segment(String(string)),
+    (x) => x.segment,
+  );
+  for (let i = characters.length - 1; i >= 0; i--) {
+    revString += characters[i];
   }
   return revString;
 };

exercises/practice/reverse-string/.meta/tests.toml

@@ -1,6 +1,13 @@
-# This is an auto-generated file. Regular comments will be removed when this
-# file is regenerated. Regenerating will not touch any manually added keys,
-# so comments can be added in a "comment" key.
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
 
 [c3b7d806-dced-49ee-8543-933fd1719b1c]
 description = "an empty string"
@@ -19,3 +26,12 @@ description = "a palindrome"
 
 [b9e7dec1-c6df-40bd-9fa3-cd7ded010c4c]
 description = "an even-sized word"
+
+[1bed0f8a-13b0-4bd3-9d59-3d0593326fa2]
+description = "wide characters"
+
+[93d7e1b8-f60f-4f3c-9559-4056e10d2ead]
+description = "grapheme cluster with pre-combined form"
+
+[1028b2c1-6763-4459-8540-2da47ca512d9]
+description = "grapheme clusters"

exercises/practice/reverse-string/reverse-string.spec.js

@@ -37,4 +37,22 @@ describe('ReverseString', () => {
     const actual = reverseString('drawer');
     expect(actual).toEqual(expected);
   });
+
+  xtest('wide characters', () => {
+    const expected = '猫子';
+    const actual = reverseString('子猫');
+    expect(actual).toEqual(expected);
+  });
+
+  test.skip('grapheme cluster with pre-combined form', () => {
+    const expected = 'dnatsnehctsrüW';
+    const actual = reverseString('Würstchenstand');
+    expect(actual).toEqual(expected);
+  });
+
+  test.skip('grapheme clusters', () => {
+    const expected = 'มรกแรปโนยขีเผู้';
+    const actual = reverseString('ผู้เขียนโปรแกรม');
+    expect(actual).toEqual(expected);
+  });
 });