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import fs from "fs";
import { describe, test, expect, jest } from "bun:test";
import { tempDirWithFiles } from "harness";
const impls = [
// ["cpSync", fs.cpSync],
["cp", fs.promises.cp],
] as const;
for (const [name, copy] of impls) {
async function copyShouldThrow(...args: Parameters<typeof copy>) {
try {
await (copy as any)(...args);
} catch (e: any) {
if (e?.code?.toUpperCase() === "TODO") {
throw new Error("Expected " + name + "() to throw non TODO error");
}
return e;
}
throw new Error("Expected " + name + "() to throw");
}
function assertContent(path: string, content: string) {
expect(fs.readFileSync(path, "utf8")).toBe(content);
}
describe("fs." + name, () => {
test("single file", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
});
await copy(basename + "/from/a.txt", basename + "/to.txt");
expect(fs.readFileSync(basename + "/to.txt", "utf8")).toBe("a");
});
test("refuse to copy directory with 'recursive: false'", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
});
await copyShouldThrow(basename + "/from", basename + "/result");
});
test("recursive directory structure - no destination", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
"from/b/e.txt": "e",
"from/c.txt": "c",
"from/w/y/x/z.txt": "z",
});
await copy(basename + "/from", basename + "/result", { recursive: true });
assertContent(basename + "/result/a.txt", "a");
assertContent(basename + "/result/b/e.txt", "e");
assertContent(basename + "/result/c.txt", "c");
assertContent(basename + "/result/w/y/x/z.txt", "z");
});
test("recursive directory structure - overwrite existing files by default", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
"from/b/e.txt": "e",
"from/c.txt": "c",
"from/w/y/x/z.txt": "z",
"result/a.txt": "fail",
"result/w/y/x/z.txt": "lose",
"result/w/y/v.txt": "keep this",
});
await copy(basename + "/from", basename + "/result", { recursive: true });
assertContent(basename + "/result/a.txt", "a");
assertContent(basename + "/result/b/e.txt", "e");
assertContent(basename + "/result/c.txt", "c");
assertContent(basename + "/result/w/y/x/z.txt", "z");
assertContent(basename + "/result/w/y/v.txt", "keep this");
});
test("recursive directory structure - 'force: false' does not overwrite existing files", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "lose",
"from/b/e.txt": "e",
"from/c.txt": "c",
"from/w/y/x/z.txt": "lose",
"result/a.txt": "win",
"result/w/y/x/z.txt": "win",
"result/w/y/v.txt": "keep this",
});
await copy(basename + "/from", basename + "/result", { recursive: true, force: false });
assertContent(basename + "/result/a.txt", "win");
assertContent(basename + "/result/b/e.txt", "e");
assertContent(basename + "/result/c.txt", "c");
assertContent(basename + "/result/w/y/x/z.txt", "win");
assertContent(basename + "/result/w/y/v.txt", "keep this");
});
test("'force: false' on a single file doesn't override", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "lose",
"result/a.txt": "win",
});
await copy(basename + "/from/a.txt", basename + "/result/a.txt", { force: false });
assertContent(basename + "/result/a.txt", "win");
});
test("'force: true' on a single file does override", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "win",
"result/a.txt": "lose",
});
await copy(basename + "/from/a.txt", basename + "/result/a.txt", { force: true });
assertContent(basename + "/result/a.txt", "win");
});
test("'force: false' + 'errorOnExist: true' can throw", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "lose",
"result/a.txt": "win",
});
await copyShouldThrow(basename + "/from/a.txt", basename + "/result/a.txt", { force: false, errorOnExist: true });
assertContent(basename + "/result/a.txt", "win");
});
test("symlinks - single file", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
});
fs.symlinkSync(basename + "/from/a.txt", basename + "/from/a_symlink.txt");
await copy(basename + "/from/a_symlink.txt", basename + "/result.txt");
await copy(basename + "/from/a_symlink.txt", basename + "/result2.txt", { recursive: false });
const stats = fs.lstatSync(basename + "/result.txt");
expect(stats.isSymbolicLink()).toBe(true);
expect(fs.readFileSync(basename + "/result.txt", "utf8")).toBe("a");
const stats2 = fs.lstatSync(basename + "/result2.txt");
expect(stats2.isSymbolicLink()).toBe(true);
expect(fs.readFileSync(basename + "/result2.txt", "utf8")).toBe("a");
});
test("symlinks - single file recursive", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
});
fs.symlinkSync(basename + "/from/a.txt", basename + "/from/a_symlink.txt");
await copy(basename + "/from/a_symlink.txt", basename + "/result.txt", { recursive: true });
const stats = fs.lstatSync(basename + "/result.txt");
expect(stats.isSymbolicLink()).toBe(true);
expect(fs.readFileSync(basename + "/result.txt", "utf8")).toBe("a");
});
test("symlinks - directory recursive", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
"from/b.txt": "b",
"from/dir/c.txt": "c",
});
fs.symlinkSync(basename + "/from/a.txt", basename + "/from/a_symlink.txt");
fs.symlinkSync(basename + "/from/dir", basename + "/from/dir_symlink");
await copy(basename + "/from", basename + "/result", { recursive: true });
const statsFile = fs.lstatSync(basename + "/result/a_symlink.txt");
expect(statsFile.isSymbolicLink()).toBe(true);
expect(fs.readFileSync(basename + "/result/a_symlink.txt", "utf8")).toBe("a");
const statsDir = fs.lstatSync(basename + "/result/dir_symlink");
expect(statsDir.isSymbolicLink()).toBe(true);
expect(fs.readdirSync(basename + "/result/dir_symlink")).toEqual(["c.txt"]);
});
test("symlinks - directory recursive 2", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
"from/b.txt": "b",
"from/dir/c.txt": "c",
});
fs.symlinkSync(basename + "/from/a.txt", basename + "/from/a_symlink.txt");
fs.symlinkSync(basename + "/from/dir", basename + "/from/dir_symlink");
fs.mkdirSync(basename + "/result");
await copy(basename + "/from", basename + "/result", { recursive: true });
const statsFile = fs.lstatSync(basename + "/result/a_symlink.txt");
expect(statsFile.isSymbolicLink()).toBe(true);
expect(fs.readFileSync(basename + "/result/a_symlink.txt", "utf8")).toBe("a");
const statsDir = fs.lstatSync(basename + "/result/dir_symlink");
expect(statsDir.isSymbolicLink()).toBe(true);
expect(fs.readdirSync(basename + "/result/dir_symlink")).toEqual(["c.txt"]);
});
test("filter - works", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
"from/b.txt": "b",
});
await copy(basename + "/from", basename + "/result", {
filter: (src: string) => {
return src.endsWith("/from") || src.includes("a.txt");
},
recursive: true,
});
expect(fs.existsSync(basename + "/result/a.txt")).toBe(true);
expect(fs.existsSync(basename + "/result/b.txt")).toBe(false);
});
test("filter - paths given are correct and relative", async () => {
const basename = tempDirWithFiles("cp", {
"from/a.txt": "a",
"from/b.txt": "b",
});
const filter = jest.fn((src: string) => true);
let prev = process.cwd();
process.chdir(basename);
await copy(basename + "/from", basename + "/result", {
filter,
recursive: true,
});
process.chdir(prev);
expect(filter.mock.calls.sort((a, b) => a[0].localeCompare(b[0]))).toEqual([
[basename + "/from", basename + "/result"],
[basename + "/from/a.txt", basename + "/result/a.txt"],
[basename + "/from/b.txt", basename + "/result/b.txt"],
]);
});
});
}
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