diff --git a/tests/copydirsync_unix.js b/tests/copydirsync_unix.js
new file mode 100644
index 0000000..d8e85db
--- /dev/null
+++ b/tests/copydirsync_unix.js
@@ -0,0 +1,72 @@
+var testCase = require('nodeunit').testCase;
+var fs = require('fs');
+var wrench = require('../lib/wrench');
+var path = require('path');
+
+function checkResultHidden(test, files) {
+    var check = [
+        '.hidden',
+        '.hidden.txt',
+        'bar.txt',
+        'foo',
+        path.join('.hidden', 'dolor.md'),
+        path.join('foo', 'bar'),
+        path.join('foo', 'dolor.md'),
+        path.join('foo', 'lorem.txt'),
+        path.join('foo', 'bar', 'ipsum.js')
+    ];
+
+    test.deepEqual(files, check);
+}
+
+function checkResultShown(test, files) {
+    var check = [
+        'bar.txt',
+        'foo',
+        path.join('foo', 'bar'),
+        path.join('foo', 'dolor.md'),
+        path.join('foo', 'lorem.txt'),
+        path.join('foo', 'bar', 'ipsum.js')
+    ];
+
+    test.deepEqual(files, check);
+}
+
+module.exports = testCase({
+    test_copyDirSyncRecursiveHidden: function(test) {
+        var dir = path.join(__dirname, 'shown');
+        var testdir = path.join(__dirname, 'testdir');
+
+        test.ok(path.existsSync(dir), 'Folders should exist');
+
+        wrench.mkdirSyncRecursive(testdir, 0777);
+        wrench.copyDirSyncRecursive(dir, testdir, { excludeHidden: false });
+
+        var files = wrench.readdirSyncRecursive(testdir);
+
+        checkResultHidden(test, files);
+
+        wrench.rmdirSyncRecursive(testdir);
+
+        test.done();
+    },
+    test_copyDirSyncRecursiveShown: function(test) {
+        var dir = path.join(__dirname, 'shown');
+        var testdir = path.join(__dirname, 'testdir');
+
+        test.ok(path.existsSync(dir), 'Folders should exist');
+
+        wrench.mkdirSyncRecursive(testdir, 0777);
+        wrench.copyDirSyncRecursive(dir, testdir, { excludeHidden: true });
+
+        var files = wrench.readdirSyncRecursive(testdir);
+
+        checkResultShown(test, files);
+
+        wrench.rmdirSyncRecursive(testdir);
+
+        test.done();
+    }
+});
+
+// vim: et ts=4 sw=4
diff --git a/tests/runner.js b/tests/runner.js
index a5cc8f7..8f90dae 100644
--- a/tests/runner.js
+++ b/tests/runner.js
@@ -3,5 +3,6 @@
 
 module.exports = {
     group_mkdir: require('./mkdir'),
-    group_readdir: require('./readdir')
+    group_readdir: require('./readdir'),
+    group_copydir: require('./copydirsync_unix')
 };
diff --git a/tests/shown/.hidden.txt b/tests/shown/.hidden.txt
new file mode 100644
index 0000000..e69de29
diff --git a/tests/shown/.hidden/dolor.md b/tests/shown/.hidden/dolor.md
new file mode 100644
index 0000000..e69de29
diff --git a/tests/shown/bar.txt b/tests/shown/bar.txt
new file mode 100644
index 0000000..e69de29
diff --git a/tests/shown/foo/bar/ipsum.js b/tests/shown/foo/bar/ipsum.js
new file mode 100644
index 0000000..e69de29
diff --git a/tests/shown/foo/dolor.md b/tests/shown/foo/dolor.md
new file mode 100644
index 0000000..e69de29
diff --git a/tests/shown/foo/lorem.txt b/tests/shown/foo/lorem.txt
new file mode 100644
index 0000000..e69de29