Solution

src/arrayReverse.test.js

@@ -7,12 +7,43 @@ describe(`Function 'arrayReverse':`, () => {
     expect(arrayReverse).toBeInstanceOf(Function);
   });
 
-  it(`should return an array`, () => {});
+  it(`should return an array`, () => {
+    expect(Array.isArray(arrayReverse(['a']))).toBe(true);
+  });
+
+  it(`should correctly reverse a single string`, () => {
+    expect(arrayReverse(['Hell0'])).toEqual(['0lleH']);
+  });
 
-  it(`should return an empty string
-    if original array consists of an empty string`, () => {
+  it(`should correctly reverse multiple strings and preserve chunk sizes`, () => {
     expect(arrayReverse(['Mate', 'Academy'])).toEqual(['ymed', 'acAetaM']);
   });
 
-  // write more tests here
+  it(`should work with single-character strings`, () => {
+    expect(arrayReverse(['I', 'am', 'a', 'student!']))
+      .toEqual(['!', 'tn', 'e', 'dutsamaI']);
+  });
+
+  it(`should handle empty array`, () => {
+    expect(arrayReverse([])).toEqual([]);
+  });
+
+  it(`should handle array with empty string`, () => {
+    expect(arrayReverse([''])).toEqual(['']);
+  });
+
+  it(`should work with numbers and special symbols inside strings`, () => {
+    expect(arrayReverse(['a1!', 'B2@', '#c3']))
+      .toEqual(['3c#', '@2B', '!1a']);
+  });
+
+  it(`should preserve total length of characters`, () => {
+    const input = ['abc', 'de!f', 'G'];
+    const result = arrayReverse(input);
+
+    const inputLength = input.join('').length;
+    const resultLength = result.join('').length;
+
+    expect(resultLength).toBe(inputLength);
+  });
 });