# test.build/core/converters/reason.loop.converter.test.ts

> 29 lines of code and 0 definitions.

Tree: Codebase Testing
Language: typescript
Canonical: https://banes-lab.com/anatomy/testing#file-testing-test-build-core-converters-reason-loop-converter-test-ts
Source text: https://banes-lab.com/source/testing/test.build/core/converters/reason.loop.converter.test.ts.txt

Listed in [test.build/core/converters](https://banes-lab.com/api/source/testing/test.build/core/converters.md), after [test.build/core/converters/reason.index.converter.test.ts](https://banes-lab.com/source/testing/test.build/core/converters/reason.index.converter.test.ts.md) and before [test.build/core/converters/reason.reference.converter.test.ts](https://banes-lab.com/source/testing/test.build/core/converters/reason.reference.converter.test.ts.md).

## Contained in

- [test.build/core/converters](https://banes-lab.com/anatomy/testing/folder-testing-test-build-core-converters.md)

## Source

```typescript
import { describe, expect, it } from "vitest";
import {
    edgesOf,
    loopOf,
    mapsOf,
    substrateOf,
} from "@banes-lab/build-scripts/core/converters/reason.loop.converter.ts";
import { createGovlabContext } from "@govlab/context";
import { createResolver } from "@banes-lab/build-scripts/core/resolvers/ontology.resolver.ts";
import { createReverseIndex } from "@banes-lab/build-scripts/core/converters/ontology.index.converter.ts";

const context = createGovlabContext();
const resolve = createResolver(context);
const sources = { context, index: createReverseIndex(context, resolve), resolve };

describe("loopOf and edgesOf", () => {
    it("carries every loop stage and every reasoning edge, with the stage transitions resolved", () => {
        const loop = loopOf(sources);
        expect(loop.stages).toHaveLength(context.reason.derivationLoop().stages.length);
        expect(loop.transitions.every((transition) => transition.from.ref !== null)).toBe(true);
        expect(edgesOf(sources)).toHaveLength(context.reason.edges().length);
    });
});

describe("substrateOf and mapsOf", () => {
    it("resolves every substrate node and every map entry to a reasoning record", () => {
        const substrate = substrateOf(sources);
        expect(substrate.nodes).toHaveLength(context.reason.substrate().nodes.length);
        expect(substrate.cycle.every((stage) => stage.ref !== null)).toBe(true);
        expect(mapsOf(sources).foundationSequence.length).toBeGreaterThan(0);
    });
});
```