# test.govlab/quality/core/visitors/context.fragment.visitor.test.ts

> 12 lines of code and 0 definitions.

Tree: Codebase Testing
Language: typescript
Canonical: https://banes-lab.com/anatomy/testing#file-testing-test-govlab-quality-core-visitors-context-fragment-visitor-test-ts
Source text: https://banes-lab.com/source/testing/test.govlab/quality/core/visitors/context.fragment.visitor.test.ts.txt

Listed in [test.govlab/quality/core/visitors](https://banes-lab.com/api/source/testing/test.govlab/quality/core/visitors.md), after [test.govlab/quality/core/visitors/block.visitor.test.ts](https://banes-lab.com/source/testing/test.govlab/quality/core/visitors/block.visitor.test.ts.md).

## Contained in

- [test.govlab/quality/core/visitors](https://banes-lab.com/anatomy/testing/folder-testing-test-govlab-quality-core-visitors.md)

## Source

```typescript
import assert from "node:assert/strict";
import { test } from "vitest";
import { walk } from "@govlab/quality/core/visitors/context.fragment.visitor.ts";

test("walk visits every nested node once and skips the parent back-reference", () => {
    const leaf = { type: "Literal", value: "x" };
    const root = { body: [leaf], parent: { type: "Program" }, type: "BlockStatement" };
    const seen: string[] = [];
    walk(root, (node) => {
        seen.push(node.type);
    });
    assert.deepEqual(seen, ["BlockStatement", "Literal"]);
});
```