import { describe, expect, it } from "vitest";
import { buildCloneArgs, validateSparsePath } from "../clone";

describe("git-safe sparse clone planning", () => {
	it("keeps current shallow no-checkout clone without sparse", () => {
		expect(buildCloneArgs("https://x/repo.git", "/tmp/repo", {})).toEqual([
			"clone",
			"--no-checkout",
			"--depth",
			"1",
			"--single-branch",
			"-c",
			"core.symlinks=false",
			"https://x/repo.git",
			"/tmp/repo",
		]);
	});
	it("adds partial clone and sparse checkout flags when sparse paths exist", () => {
		expect(
			buildCloneArgs("https://x/repo.git", "/tmp/repo", {
				branch: "main",
				sparse: ["docs", "src/web"],
			}),
		).toEqual([
			"clone",
			"--no-checkout",
			"--depth",
			"1",
			"--single-branch",
			"--filter=blob:none",
			"--sparse",
			"-c",
			"core.symlinks=false",
			"--branch",
			"main",
			"https://x/repo.git",
			"/tmp/repo",
		]);
	});
	it("rejects sparse traversal and absolute paths", () => {
		expect(() => validateSparsePath("docs")).not.toThrow();
		expect(() => validateSparsePath("../secrets")).toThrow(
			/unsafe sparse path/,
		);
		expect(() => validateSparsePath("/etc")).toThrow(/unsafe sparse path/);
	});
});