diff --git a/mock-fs/mock-fs-tests.ts b/mock-fs/mock-fs-tests.ts
new file mode 100644
index 0000000000..3dd9f01210
--- /dev/null
+++ b/mock-fs/mock-fs-tests.ts
@@ -0,0 +1,79 @@
+/// <reference path="mock-fs.d.ts" />
+
+var mock = require('mock-fs');
+
+function a() {
+	mock({
+		'path/to/fake/dir': {
+			'some-file.txt': 'file content here',
+			'empty-dir': {/** empty directory */}
+		},
+		'path/to/some.png': new Buffer([8, 6, 7, 5, 3, 0, 9]),
+		'some/other/path': {/** another empty directory */}
+	});
+
+	// after a test runs
+	mock.restore();
+}
+
+function b() {
+	mock({
+		'path/to/file.txt': 'file content here'
+	});
+}
+
+function c() {
+	mock({
+		foo: mock.file({
+			content: 'file content here',
+			ctime: new Date(1),
+			mtime: new Date(1)
+		 })
+	});
+}
+
+function d() {
+	// note that this could also be written as
+	// mock({'path/to/dir': { /** config */ }})
+	mock({
+		path: {
+			to: {
+				dir: {
+					file1: 'text content',
+					file2: new Buffer([1, 2, 3, 4])
+				}
+			}
+		}
+	});
+}
+
+function e() {
+	mock({
+		'some/dir': mock.directory({
+			mode: 0755,
+			items: {
+				file1: 'file one content',
+				file2: new Buffer([8, 6, 7, 5, 3, 0, 9])
+			}
+		})
+	});
+}
+
+function f() {
+	mock({
+		'some/dir': {
+			'regular-file': 'file contents',
+			'a-symlink': mock.symlink({
+				path: 'regular-file'
+			})
+		}
+	});
+}
+
+var mockedFS = mock.fs({
+	'/file': 'blah'
+});
+
+if (mockedFS.readFileSync('/file', { encoding: 'utf8' }) === 'blah') {
+	console.log('woo');
+}
diff --git a/mock-fs/mock-fs.d.ts b/mock-fs/mock-fs.d.ts
new file mode 100644
index 0000000000..539e74e869
--- /dev/null
+++ b/mock-fs/mock-fs.d.ts
@@ -0,0 +1,51 @@
+// Type definitions for mock-fs 2.5.0
+// Project: https://github.com/tschaub/mock-fs
+// Definitions by: Wim Looman <https://github.com/Nemo157>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module "mock-fs" {
+	import fs = require("fs");
+
+	function mock(config?: mock.Config): void;
+
+	module mock {
+		function file(config: FileConfig): File;
+		function directory(config: DirectoryConfig): Directory;
+		function symlink(config: SymlinkConfig): Symlink;
+
+		function restore(): void;
+
+		function fs(config?: Config): typeof fs;
+
+		interface Config {
+			[path: string]: string | Buffer | File | Directory | Symlink | Config;
+		}
+
+		interface CommonConfig {
+			mode?: number;
+			uid?: number;
+			git?: number;
+			atime?: Date;
+			ctime?: Date;
+			mtime?: Date;
+		}
+
+		interface FileConfig extends CommonConfig {
+			content: string | Buffer;
+		}
+		interface DirectoryConfig extends CommonConfig {
+			items: Config;
+		}
+		interface SymlinkConfig extends CommonConfig {
+			path: string;
+		}
+
+		class File { private _file: any; }
+		class Directory { private _directory: any; }
+		class Symlink { private _symlink: any; }
+	}
+
+	export = mock;
+}