Testing

src/arrayReverse.test.js

@@ -7,12 +7,42 @@ describe(`Function 'arrayReverse':`, () => {
     expect(arrayReverse).toBeInstanceOf(Function);
   });
 
-  it(`should return an array`, () => {});
+  it(`should return an array`, () => {
+    expect(Array.isArray(arrayReverse(['Hell0']))).toBe(true);
+  });
+
+  it(`should return an empty string if original array consists of an empty string`, () => {
+    expect(arrayReverse([''])).toEqual(['']);
+  });
 
-  it(`should return an empty string
-    if original array consists of an empty string`, () => {
+  it(`should reverse one string in array`, () => {
+    expect(arrayReverse(['Hell0'])).toEqual(['0lleH']);
+  });
+
+  it(`should reverse strings and their order`, () => {
     expect(arrayReverse(['Mate', 'Academy'])).toEqual(['ymed', 'acAetaM']);
   });
 
-  // write more tests here
+  it(`should keep original strings lengths after reverse`, () => {
+    expect(arrayReverse(['I', 'am', 'a', 'student!'])).toEqual([
+      '!',
+      'tn',
+      'e',
+      'dutsamaI',
+    ]);
+  });
+
+  it(`should work with numbers and special symbols`, () => {
+    expect(arrayReverse(['12', '@#$%', 'abc'])).toEqual(['cb', 'a%$#', '@21']);
+  });
+
+  it(`should work with multiple empty strings`, () => {
+    expect(arrayReverse(['', '', ''])).toEqual(['', '', '']);
+  });
+
+  it(`should not change array length`, () => {
+    const result = arrayReverse(['Mate', 'Academy']);
+
+    expect(result.length).toBe(2);
+  });
 });