Added more test cases in GrayCode.test.js

Author: Harshdev098

Bit-Manipulation/test/GrayCodes.test.js

@@ -1,8 +1,43 @@
-import { generateGrayCodes } from '../GrayCodes.js' // Import the function
+import { generateGrayCodes } from '../GrayCodes.js' 
+
+/**
+ * Test cases for the generateGrayCodes function.
+ */
 
 test('Generate Gray codes for n=3', () => {
   const n = 3
   const expectedGrayCodes = [0, 1, 3, 2, 6, 7, 5, 4]
   const grayCodes = generateGrayCodes(n)
   expect(grayCodes).toEqual(expectedGrayCodes)
 })
+test('Generate Gray codes for n=0', () => {
+    const n = 0;
+    const expectedGrayCodes = [0];
+    const grayCodes = generateGrayCodes(n);
+    expect(grayCodes).toEqual(expectedGrayCodes);
+  });
+  
+  test('Generate Gray codes for n=1', () => {
+    const n = 1;
+    const expectedGrayCodes = [0, 1];
+    const grayCodes = generateGrayCodes(n);
+    expect(grayCodes).toEqual(expectedGrayCodes);
+  });
+  
+  test('Generate Gray codes for n=4', () => {
+    const n = 4;
+    const expectedGrayCodes = [
+      0, 1, 3, 2, 6, 7, 5, 4, 12, 13, 15, 14, 10, 11, 9, 8
+    ];
+    const grayCodes = generateGrayCodes(n);
+    expect(grayCodes).toEqual(expectedGrayCodes);
+  });
+  
+  test('Generate Gray codes for n=5', () => {
+    const n = 5;
+    const expectedGrayCodes = [
+      0, 1, 3, 2, 6, 7, 5, 4, 12, 13, 15, 14, 10, 11, 9, 8, 24, 25, 27, 26, 30, 31, 29, 28, 20, 21, 23, 22, 18, 19, 17, 16
+    ];
+    const grayCodes = generateGrayCodes(n);
+    expect(grayCodes).toEqual(expectedGrayCodes);
+  });