init number dir create listOfIntegers function then write testCases for that function

src/pages/number/generate/generate.service.test.ts

@@ -0,0 +1,56 @@
+// Import necessary modules and functions
+import { describe, it, expect } from 'vitest';
+import { listOfIntegers } from './service';
+
+// Define test cases for the listOfIntegers function
+describe('listOfIntegers function', () => {
+    it('should generate a list of integers with comma separator', () => {
+        const initialValue = 1;
+        const step = 2;
+        const count = 5;
+        const separator = ', ';
+
+        const result = listOfIntegers(initialValue, count, step, separator);
+        expect(result).toBe('1, 3, 5, 7, 9');
+    });
+
+    it('should generate a list of integers with dash separator', () => {
+        const initialValue = 0;
+        const step = 3;
+        const count = 4;
+        const separator = ' - ';
+
+        const result = listOfIntegers(initialValue, count, step, separator);
+        expect(result).toBe('0 - 3 - 6 - 9');
+    });
+
+    it('should handle negative initial value and step', () => {
+        const initialValue = -10;
+        const step = -2;
+        const count = 5;
+        const separator = ' ';
+
+        const result = listOfIntegers(initialValue, count, step, separator);
+        expect(result).toBe('-10 -12 -14 -16 -18');
+    }); 
+
+    it('should handle negative initial value and positive step', () => {
+        const initialValue = -10;
+        const step = 2;
+        const count = 5;
+        const separator = ' ';
+
+        const result = listOfIntegers(initialValue, count, step, separator);
+        expect(result).toBe('-10 -8 -6 -4 -2');
+    }); 
+
+    it('should float value', () => {
+        const initialValue = -10;
+        const step = 2.5;
+        const count = 5;
+        const separator = ' ';
+
+        const result = listOfIntegers(initialValue, count, step, separator);
+        expect(result).toBe('-10 -7.5 -5 -2.5 0');
+    }); 
+});