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import { it, expect } from "vitest";
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import { env } from "cloudflare:workers";
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import { asTypedStorage, type RepoStateSchema } from "@/worker/do/repo/repoState";
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import { uniqueRepoId, runDOWithRetry } from "./util/test-helpers";
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import { setupRepoForTests } from "./util/repoSeed";
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import { readPath } from "@/worker/git/operations/read";
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import { encodeGitObject } from "@/worker/git/core/objects";
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import { seedPackFirstRepo } from "./util/pack-first";
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import { registerTestPack } from "./util/packed-repo";
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it("readPath resolves tag to its target commit tree (tag peel)", async () => {
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  const owner = "o";
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  const repo = uniqueRepoId("r-readpath-tag");
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  await setupRepoForTests(env, owner, repo);
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  const repoId = `${owner}/${repo}`;
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  const seeded = await seedPackFirstRepo(repoId);
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  const id = env.REPO_DO.idFromName(repoId);
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  const getStub = () => env.REPO_DO.get(id);
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  // Create an annotated tag object pointing to the seeded commit
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  const commitOid = seeded.nextCommit.oid;
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  const tagPayload = new TextEncoder().encode(
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    `object ${commitOid}\n` +
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      `type commit\n` +
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      `tag v1\n` +
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      `tagger Test <test@example.com> 0 +0000\n` +
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      `\n` +
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      `message\n`
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  );
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  const { oid: tagOid } = await encodeGitObject("tag", tagPayload);
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  // Pack the tag and register it
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  await registerTestPack({
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    env,
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    repoId,
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    getStub,
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    packName: "pack-tag.pack",
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    objects: [{ type: "tag", payload: tagPayload }],
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  });
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  // Add the tag ref
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  await runDOWithRetry(getStub, async (_instance, state) => {
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    const store = asTypedStorage<RepoStateSchema>(state.storage);
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    const refs = ((await store.get("refs")) || []) as { name: string; oid: string }[];
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    refs.push({ name: "refs/tags/v1", oid: tagOid });
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    await store.put("refs", refs);
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  });
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  // Call readPath with the tag ref; expect a tree result (root tree of the tagged commit)
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  const result = await readPath(env as unknown as Env, repoId, "refs/tags/v1");
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  expect(result.type).toBe("tree");
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  if (result.type === "tree") {
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    expect(Array.isArray(result.entries)).toBe(true);
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  }
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});