changesets-action/src/readChangesetState.test.ts

import { createFixture } from "fs-fixture";
import { describe, expect, it } from "vitest";
import readChangesetState from "./readChangesetState.ts";

const changeset = `---
"pkg-a": patch
---

Fix a bug.
`;

describe("readChangesetState", () => {
  it("filters versioned changesets in prerelease mode", async () => {
    await using fixture = await createFixture({
      ".changeset/pre.json": JSON.stringify({ mode: "pre", tag: "next" }),
      ".changeset/pre/versioned.md": changeset,
      ".changeset/pending.md": changeset,
    });

    const state = await readChangesetState(fixture.path);

    expect(state.changesets.map((changeset) => changeset.id)).toEqual([
      "pending",
    ]);
  });

  it("includes versioned changesets when exiting prerelease mode", async () => {
    await using fixture = await createFixture({
      ".changeset/pre.json": JSON.stringify({ mode: "exit", tag: "next" }),
      ".changeset/pre/versioned.md": changeset,
    });

    const state = await readChangesetState(fixture.path);

    expect(state.preState).toBeUndefined();
    expect(state.changesets.map((changeset) => changeset.id)).toEqual([
      "pre/versioned",
    ]);
  });
});