coder/site/src/utils/tar.test.ts

import {
	type ITarFileInfo,
	TarFileTypeCodes,
	TarReader,
	TarWriter,
} from "./tar";

const mtime = 1666666666666;

test("tar", async () => {
	// Write
	const writer = new TarWriter();
	writer.addFile("a.txt", "hello", { mtime });
	writer.addFile("b.txt", new Blob(["world"]), { mtime });
	writer.addFile("c.txt", "", { mtime });
	writer.addFolder("etc", { mtime });
	writer.addFile("etc/d.txt", "Some text content", {
		mtime,
		user: "coder",
		group: "codergroup",
		mode: 0o777,
	});
	const blob = (await writer.write()) as Blob;

	// Read
	const reader = new TarReader();
	const fileInfos = await reader.readFile(blob);
	verifyFile(fileInfos[0], reader.getTextFile(fileInfos[0].name) as string, {
		name: "a.txt",
		content: "hello",
	});
	verifyFile(fileInfos[1], reader.getTextFile(fileInfos[1].name) as string, {
		name: "b.txt",
		content: "world",
	});
	verifyFile(fileInfos[2], reader.getTextFile(fileInfos[2].name) as string, {
		name: "c.txt",
		content: "",
	});
	verifyFolder(fileInfos[3], {
		name: "etc",
	});
	verifyFile(fileInfos[4], reader.getTextFile(fileInfos[4].name) as string, {
		name: "etc/d.txt",
		content: "Some text content",
	});
	expect(fileInfos[4].group).toEqual("codergroup");
	expect(fileInfos[4].user).toEqual("coder");
	expect(fileInfos[4].mode).toEqual(0o777);
});

function verifyFile(
	info: ITarFileInfo,
	content: string,
	expected: { name: string; content: string },
) {
	expect(info.name).toEqual(expected.name);
	expect(info.size).toEqual(expected.content.length);
	expect(content).toEqual(expected.content);
}

function verifyFolder(info: ITarFileInfo, expected: { name: string }) {
	expect(info.name).toEqual(expected.name);
	expect(info.type).toEqual(TarFileTypeCodes.Dir);
}