chore: import upstream snapshot with attribution

tools/challenge-parser/parser/plugins/utils/find-all.test.js

@@ -0,0 +1,41 @@
+import { describe, it, expect } from 'vitest';
+
+import { findAll } from './find-all';
+
+const testTree = {
+  type: 'root',
+  children: [
+    {
+      type: 'heading',
+      depth: 1,
+      children: [{ type: 'text', value: 'test', testId: 1 }]
+    },
+    {
+      type: 'paragraph',
+      children: [{ type: 'text', value: 'different', testId: 2 }]
+    },
+    {
+      type: 'heading',
+      depth: 2,
+      children: [{ type: 'text', value: 'test', testId: 3 }]
+    },
+    {
+      type: 'heading',
+      depth: 1,
+      children: [{ type: 'text', value: 'test', testId: 4 }]
+    }
+  ]
+};
+
+describe('findAll', () => {
+  it('should return an array', () => {
+    expect(findAll(testTree, () => false)).toEqual([]);
+  });
+  it('should return an array of nodes that match the test', () => {
+    expect(findAll(testTree, { type: 'text', value: 'test' })).toEqual([
+      { type: 'text', value: 'test', testId: 1 },
+      { type: 'text', value: 'test', testId: 3 },
+      { type: 'text', value: 'test', testId: 4 }
+    ]);
+  });
+});