refactor: change separate tools by category

core/stdlib/src/arrays/cluster/index.test.ts

@@ -0,0 +1,40 @@
+import { describe, it, expect } from 'vitest';
+import { cluster } from '.';
+
+describe('cluster', () => {
+  it('cluster an array into subarrays of a specific size', () => {
+    const result = cluster([1, 2, 3, 4, 5, 6, 7, 8], 3);
+
+    expect(result).toEqual([[1, 2, 3], [4, 5, 6], [7, 8]]);
+  });
+
+  it('handle arrays that are not perfectly divisible by the size', () => {
+    const result = cluster([1, 2, 3, 4, 5], 2);
+
+    expect(result).toEqual([[1, 2], [3, 4], [5]]);
+  });
+
+  it('return an array with each element in its own subarray if size is 1', () => {
+    const result = cluster([1, 2, 3, 4], 1);
+
+    expect(result).toEqual([[1], [2], [3], [4]]);
+  });
+
+  it('return an array with a single subarray if size is greater than the array length', () => {
+    const result = cluster([1, 2, 3], 5);
+
+    expect(result).toEqual([[1, 2, 3]]);
+  });
+
+  it('return an empty array if size is less than or equal to 0', () => {
+    const result = cluster([1, 2, 3, 4], -1);
+
+    expect(result).toEqual([]);
+  });
+
+  it('return an empty array if the input array is empty', () => {
+    const result = cluster([], 3);
+    
+    expect(result).toEqual([]);
+  });
+});