diff --git a/tests/bugs/issue775.js b/tests/bugs/issue775.js
index cb3b7e6..6ca5ead 100644
--- a/tests/bugs/issue775.js
+++ b/tests/bugs/issue775.js
@@ -1,18 +1,114 @@
 'use strict';
-const util = require('../lib/test-utils.js');
+var util = require('../lib/test-utils.js');
+var expect = require('chai').expect;
 
 describe('fs.readdir fails when passing options, issue775', function () {
   beforeEach(util.setup);
   afterEach(util.cleanup);
 
-  it.skip('should create a directory then call fs.readdir with options', function (done) {
-    const fs = util.fs();
-    fs.mkdir('/test_dir', undefined, (err) => {
+  function setup(fs, dir, cb) {
+    fs.mkdir(dir, undefined, (err) => {
+      if (err) {
+        cb(err);
+      }
+      else {
+        fs.writeFile(dir + '/file', '', (err) => {
+          if (err) {
+            cb(err);
+          }
+          else {
+            fs.mkdir(dir + '/folder', (err) => {
+              if (err) {
+                cb(err);
+              }
+              else {
+                fs.symlink(dir + '/file', dir + '/symlink', (err) => {
+                  if (err) {
+                    cb(err);
+                  }
+                  else {
+                    cb();
+                  }
+                });
+              }
+            });
+          }
+        });
+      }
+    });
+  }
+
+  it('should create a directory, add a file, folder and symbolic link then call fs.readdir with buffer encoding', function (done) {
+    var fs = util.fs();
+    setup(fs, '/test_dir', (err) => {
+      if (err) {
+        done(err);
+      }
+      fs.readdir('/test_dir', 'buffer', (err, data) => {
+        if (err) {
+          done(err);
+        }
+        else {
+          expect(data).to.have.length(3);
+
+          expect(data[0].toString()).to.equal('file');
+          expect(data[1].toString()).to.equal('folder');
+          expect(data[2].toString()).to.equal('symlink');
+
+          done();
+        }
+      });
+    });
+  });
+
+  it('should create a directory, add a file, folder and symbolic link then call fs.readdir with withFileTypes and encoding options', function (done) {
+    var fs = util.fs();
+    setup(fs, '/test_dir', (err) => {
+      if (err) {
+        done(err);
+      }
+      fs.readdir('/test_dir', { encoding: 'base64', withFileTypes: true }, (err, data) => {
+        if (err) {
+          done(err);
+        }
+        else {
+          expect(data).to.have.length(3);
+
+          expect(Buffer.from(data[0].name, 'base64').toString()).to.equal('file');
+          expect(Buffer.from(data[1].name, 'base64').toString()).to.equal('folder');
+          expect(Buffer.from(data[2].name, 'base64').toString()).to.equal('symlink');
+
+          expect(data[0].isFile()).to.be.true;
+          expect(data[1].isDirectory()).to.be.true;
+          expect(data[2].isSymbolicLink()).to.be.true;
+
+          done();
+        }
+      });
+    });
+  });
+
+  it('should create a directory then call fs.readdir without options', function (done) {
+    var fs = util.fs();
+    setup(fs, '/test_dir', (err) => {
       if (err) {
         done(err);
       }
       else {
-        fs.readdir('/test_dir', { withFileTypes: true }, done);
+        fs.readdir('/test_dir', (err, data) => {
+          if (err) {
+            done(err);
+          }
+          else {
+            expect(data).to.have.length(3);
+
+            expect(data[0]).to.equal('file');
+            expect(data[1]).to.equal('folder');
+            expect(data[2]).to.equal('symlink');
+
+            done();
+          }
+        });
       }
     });
   });