# test.govlab/context/core/loaders/layer.loader.test.ts

> 17 lines of code and 0 definitions.

Tree: Codebase Testing
Language: typescript
Canonical: https://banes-lab.com/anatomy/testing#file-testing-test-govlab-context-core-loaders-layer-loader-test-ts
Source text: https://banes-lab.com/source/testing/test.govlab/context/core/loaders/layer.loader.test.ts.txt

Listed in [test.govlab/context/core/loaders](https://banes-lab.com/api/source/testing/test.govlab/context/core/loaders.md), after [test.govlab/context/core/loaders/grammar.loader.test.ts](https://banes-lab.com/source/testing/test.govlab/context/core/loaders/grammar.loader.test.ts.md) and before [test.govlab/context/core/loaders/lexicon.loader.test.ts](https://banes-lab.com/source/testing/test.govlab/context/core/loaders/lexicon.loader.test.ts.md).

## Contained in

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

## Source

```typescript
import { INDEX_FILE, MEMBERSHIP_KEY } from "@govlab/context/configuration/constants/layer.constants.ts";
import { ReadAudit } from "@govlab/context/core/observers/record.observer.ts";
import { asLayerMembership } from "@govlab/context/core/normalizers/layer.normalizer.ts";
import assert from "node:assert/strict";
import { readLayerList } from "@govlab/context/core/loaders/layer.loader.ts";
import { test } from "vitest";

test("readLayerList coerces each entry under the key and rejects the ones the coercer refuses", () => {
    const audit = new ReadAudit("layers");
    const membership = readLayerList(audit, INDEX_FILE, MEMBERSHIP_KEY, asLayerMembership);
    assert.ok(membership.length > 0);
    const refused = new ReadAudit("layers");
    assert.deepEqual(
        readLayerList(refused, INDEX_FILE, MEMBERSHIP_KEY, () => null),
        [],
    );
    assert.ok(refused.unread().some((entry) => entry.reason === "rejected"));
});
```