test: split test-fs-cp.js

This test previously squeezed 70+ test cases into one single file
and has been constantly crashing on Windows with exit code
3221226505 and no stack trace. As it is already marked as flaky
there is no way to understand which test case is failing and
the Windows CI was constantly orange. This patch splits the
test cases into different files so it's easier to find out
which case is exactly failing and to be skipped.

PR-URL: #59408
Refs: #56794
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Zeyu "Alex" Yang <himself65@outlook.com>
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>

Author: joyeecheung

test/common/fs.js

@@ -0,0 +1,49 @@
+'use strict';
+
+const { mustNotMutateObjectDeep } = require('.');
+const { readdirSync } = require('node:fs');
+const { join } = require('node:path');
+const assert = require('node:assert');
+const tmpdir = require('./tmpdir.js');
+
+let dirc = 0;
+function nextdir(dirname) {
+  return tmpdir.resolve(dirname || `copy_%${++dirc}`);
+}
+
+function assertDirEquivalent(dir1, dir2) {
+  const dir1Entries = [];
+  collectEntries(dir1, dir1Entries);
+  const dir2Entries = [];
+  collectEntries(dir2, dir2Entries);
+  assert.strictEqual(dir1Entries.length, dir2Entries.length);
+  for (const entry1 of dir1Entries) {
+    const entry2 = dir2Entries.find((entry) => {
+      return entry.name === entry1.name;
+    });
+    assert(entry2, `entry ${entry2.name} not copied`);
+    if (entry1.isFile()) {
+      assert(entry2.isFile(), `${entry2.name} was not file`);
+    } else if (entry1.isDirectory()) {
+      assert(entry2.isDirectory(), `${entry2.name} was not directory`);
+    } else if (entry1.isSymbolicLink()) {
+      assert(entry2.isSymbolicLink(), `${entry2.name} was not symlink`);
+    }
+  }
+}
+
+function collectEntries(dir, dirEntries) {
+  const newEntries = readdirSync(dir, mustNotMutateObjectDeep({ withFileTypes: true }));
+  for (const entry of newEntries) {
+    if (entry.isDirectory()) {
+      collectEntries(join(dir, entry.name), dirEntries);
+    }
+  }
+  dirEntries.push(...newEntries);
+}
+
+module.exports = {
+  nextdir,
+  assertDirEquivalent,
+  collectEntries,
+};

test/parallel/parallel.status

@@ -24,8 +24,14 @@ test-snapshot-incompatible: SKIP
 test-async-context-frame: PASS, FLAKY
 # https://github.com/nodejs/node/issues/54534
 test-runner-run-watch: PASS, FLAKY
-# https://github.com/nodejs/node/issues/56794
-test-fs-cp: PASS, FLAKY
+# https://github.com/nodejs/node/pull/59408#issuecomment-3170650933
+test-fs-cp-sync-error-on-exist: PASS, FLAKY
+test-fs-cp-sync-copy-symlink-not-pointing-to-folder: PASS, FLAKY
+test-fs-cp-sync-symlink-points-to-dest-error: PASS, FLAKY
+test-fs-cp-sync-resolve-relative-symlinks-false: PASS, FLAKY
+test-fs-cp-async-symlink-points-to-dest: PASS, FLAKY
+test-fs-cp-sync-unicode-folder-names: PASS, FLAKY
+test-fs-cp-sync-resolve-relative-symlinks-default: PASS, FLAKY
 
 # https://github.com/nodejs/node/issues/56751
 test-without-async-context-frame: PASS, FLAKY

test/parallel/test-fs-cp-async-async-filter-function.mjs

@@ -0,0 +1,32 @@
+// This tests that cp() supports async filter function.
+
+import { mustCall } from '../common/index.mjs';
+import { nextdir, collectEntries } from '../common/fs.js';
+import assert from 'node:assert';
+import { cp, statSync } from 'node:fs';
+import { setTimeout } from 'node:timers/promises';
+import tmpdir from '../common/tmpdir.js';
+import fixtures from '../common/fixtures.js';
+tmpdir.refresh();
+
+const src = fixtures.path('copy/kitchen-sink');
+const dest = nextdir();
+cp(src, dest, {
+  filter: async (path) => {
+    await setTimeout(5, 'done');
+    const pathStat = statSync(path);
+    return pathStat.isDirectory() || path.endsWith('.js');
+  },
+  dereference: true,
+  recursive: true,
+}, mustCall((err) => {
+  assert.strictEqual(err, null);
+  const destEntries = [];
+  collectEntries(dest, destEntries);
+  for (const entry of destEntries) {
+    assert.strictEqual(
+      entry.isDirectory() || entry.name.endsWith('.js'),
+      true
+    );
+  }
+}));

test/parallel/test-fs-cp-async-copy-non-directory-symlink.mjs

@@ -0,0 +1,22 @@
+// This tests that cp() copies link if it does not point to folder in src.
+
+import { mustCall, mustNotMutateObjectDeep } from '../common/index.mjs';
+import { nextdir } from '../common/fs.js';
+import assert from 'node:assert';
+import { cp, mkdirSync, readlinkSync, symlinkSync } from 'node:fs';
+import { join } from 'node:path';
+import tmpdir from '../common/tmpdir.js';
+
+tmpdir.refresh();
+
+const src = nextdir();
+mkdirSync(join(src, 'a', 'b'), mustNotMutateObjectDeep({ recursive: true }));
+symlinkSync(src, join(src, 'a', 'c'));
+const dest = nextdir();
+mkdirSync(join(dest, 'a'), mustNotMutateObjectDeep({ recursive: true }));
+symlinkSync(dest, join(dest, 'a', 'c'));
+cp(src, dest, mustNotMutateObjectDeep({ recursive: true }), mustCall((err) => {
+  assert.strictEqual(err, null);
+  const link = readlinkSync(join(dest, 'a', 'c'));
+  assert.strictEqual(link, src);
+}));

test/parallel/test-fs-cp-async-dereference-force-false-silent-fail.mjs

@@ -0,0 +1,25 @@
+// This tests that it does not fail if the same directory is copied to dest
+// twice, when dereference is true, and force is false (fails silently).
+
+import { mustCall, mustNotMutateObjectDeep } from '../common/index.mjs';
+import assert from 'node:assert';
+import { cp, cpSync, lstatSync } from 'node:fs';
+import { join } from 'node:path';
+import { nextdir } from '../common/fs.js';
+import tmpdir from '../common/tmpdir.js';
+import fixtures from '../common/fixtures.js';
+
+tmpdir.refresh();
+
+const src = fixtures.path('copy/kitchen-sink');
+const dest = nextdir();
+const destFile = join(dest, 'a/b/README2.md');
+cpSync(src, dest, mustNotMutateObjectDeep({ dereference: true, recursive: true }));
+cp(src, dest, {
+  dereference: true,
+  recursive: true
+}, mustCall((err) => {
+  assert.strictEqual(err, null);
+  const stat = lstatSync(destFile);
+  assert(stat.isFile());
+}));

test/parallel/test-fs-cp-async-dereference-symlink.mjs

@@ -0,0 +1,27 @@
+// This tests that cp() copies file itself, rather than symlink, when dereference is true.
+
+import { mustCall, mustNotMutateObjectDeep } from '../common/index.mjs';
+import { nextdir } from '../common/fs.js';
+import assert from 'node:assert';
+import { cp, lstatSync, mkdirSync, symlinkSync, writeFileSync } from 'node:fs';
+import { join } from 'node:path';
+import tmpdir from '../common/tmpdir.js';
+
+tmpdir.refresh();
+
+const src = nextdir();
+mkdirSync(src, mustNotMutateObjectDeep({ recursive: true }));
+writeFileSync(join(src, 'foo.js'), 'foo', 'utf8');
+symlinkSync(join(src, 'foo.js'), join(src, 'bar.js'));
+
+const dest = nextdir();
+mkdirSync(dest, mustNotMutateObjectDeep({ recursive: true }));
+const destFile = join(dest, 'foo.js');
+
+cp(join(src, 'bar.js'), destFile, mustNotMutateObjectDeep({ dereference: true }),
+   mustCall((err) => {
+     assert.strictEqual(err, null);
+     const stat = lstatSync(destFile);
+     assert(stat.isFile());
+   })
+);

test/parallel/test-fs-cp-async-dest-symlink-points-to-src-error.mjs

@@ -0,0 +1,21 @@
+// This tests that cp() returns error if parent directory of symlink in dest points to src.
+
+import { mustCall, mustNotMutateObjectDeep } from '../common/index.mjs';
+import { nextdir } from '../common/fs.js';
+import assert from 'node:assert';
+import { cp, mkdirSync, symlinkSync } from 'node:fs';
+import { join } from 'node:path';
+import tmpdir from '../common/tmpdir.js';
+
+tmpdir.refresh();
+
+const src = nextdir();
+mkdirSync(join(src, 'a'), mustNotMutateObjectDeep({ recursive: true }));
+const dest = nextdir();
+// Create symlink in dest pointing to src.
+const destLink = join(dest, 'b');
+mkdirSync(dest, mustNotMutateObjectDeep({ recursive: true }));
+symlinkSync(src, destLink);
+cp(src, join(dest, 'b', 'c'), mustCall((err) => {
+  assert.strictEqual(err.code, 'ERR_FS_CP_EINVAL');
+}));

test/parallel/test-fs-cp-async-dir-to-file.mjs

@@ -0,0 +1,17 @@
+// This tests that cp() returns error if attempt is made to copy directory to file.
+
+import { mustCall, mustNotMutateObjectDeep } from '../common/index.mjs';
+import { nextdir } from '../common/fs.js';
+import assert from 'node:assert';
+import { cp, mkdirSync } from 'node:fs';
+import tmpdir from '../common/tmpdir.js';
+import fixtures from '../common/fixtures.js';
+
+tmpdir.refresh();
+
+const src = nextdir();
+mkdirSync(src, mustNotMutateObjectDeep({ recursive: true }));
+const dest = fixtures.path('copy/kitchen-sink/README.md');
+cp(src, dest, mustCall((err) => {
+  assert.strictEqual(err.code, 'ERR_FS_CP_DIR_TO_NON_DIR');
+}));

test/parallel/test-fs-cp-async-error-on-exist.mjs

@@ -0,0 +1,22 @@
+// This tests that cp() returns error if errorOnExist is true, force is false, and file or folder copied over.
+
+import { mustCall, mustNotMutateObjectDeep } from '../common/index.mjs';
+import { nextdir } from '../common/fs.js';
+import assert from 'node:assert';
+import { cp, cpSync } from 'node:fs';
+import tmpdir from '../common/tmpdir.js';
+import fixtures from '../common/fixtures.js';
+
+tmpdir.refresh();
+
+const src = fixtures.path('copy/kitchen-sink');
+const dest = nextdir();
+cpSync(src, dest, mustNotMutateObjectDeep({ recursive: true }));
+cp(src, dest, {
+  dereference: true,
+  errorOnExist: true,
+  force: false,
+  recursive: true,
+}, mustCall((err) => {
+  assert.strictEqual(err.code, 'ERR_FS_CP_EEXIST');
+}));

test/parallel/test-fs-cp-async-file-to-dir.mjs

@@ -0,0 +1,17 @@
+// This tests that cp() returns error if attempt is made to copy file to directory.
+
+import { mustCall, mustNotMutateObjectDeep } from '../common/index.mjs';
+import { nextdir } from '../common/fs.js';
+import assert from 'node:assert';
+import { cp, mkdirSync } from 'node:fs';
+import tmpdir from '../common/tmpdir.js';
+import fixtures from '../common/fixtures.js';
+
+tmpdir.refresh();
+
+const src = fixtures.path('copy/kitchen-sink/README.md');
+const dest = nextdir();
+mkdirSync(dest, mustNotMutateObjectDeep({ recursive: true }));
+cp(src, dest, mustCall((err) => {
+  assert.strictEqual(err.code, 'ERR_FS_CP_NON_DIR_TO_DIR');
+}));