import { describe, expect, it } from "vitest";
import {
	postCheckoutHookScript,
	TFF_HOOK_MARKER,
} from "../../../../src/infrastructure/hooks/post-checkout-template.js";

describe("postCheckoutHookScript", () => {
	it("starts with shebang", () => {
		expect(postCheckoutHookScript).toMatch(/^#!\/bin\/sh/);
	});

	it("contains tff marker comment", () => {
		expect(postCheckoutHookScript).toContain(TFF_HOOK_MARKER);
	});

	it("exits 0 for non-branch checkouts", () => {
		expect(postCheckoutHookScript).toContain('[ "$3" = "1" ] || exit 0');
	});

	it("skips detached HEAD", () => {
		expect(postCheckoutHookScript).toContain('[ -z "$BRANCH" ] && exit 0');
	});

	it("logs to .tff/hook.log", () => {
		expect(postCheckoutHookScript).toContain(".tff/hook.log");
	});

	it("chains pre-existing hook without exec", () => {
		expect(postCheckoutHookScript).toContain("post-checkout.pre-tff");
		expect(postCheckoutHookScript).not.toMatch(/exec "\$\(dirname/);
	});

	it("always ends with exit 0", () => {
		expect(postCheckoutHookScript.trimEnd()).toMatch(/exit 0$/);
	});

	it("resolves tff-tools via git rev-parse", () => {
		expect(postCheckoutHookScript).toContain("git rev-parse --show-toplevel");
	});
});