diff --git a/pubspec.lock b/pubspec.lock
index d3b1732..f91a456 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -7,6 +7,12 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.1.3+1"
+  analyzer:
+    description:
+      name: analyzer
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.27.2"
   args:
     description:
       name: args
@@ -19,6 +25,18 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.11.0"
+  barback:
+    description:
+      name: barback
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.15.2+8"
+  boolean_selector:
+    description:
+      name: boolean_selector
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
   charcode:
     description:
       name: charcode
@@ -43,6 +61,12 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.1"
+  csslib:
+    description:
+      name: csslib
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.13.2"
   discoveryapis_generator:
     description:
       name: discoveryapis_generator
@@ -55,6 +79,12 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.2.0+13"
+  glob:
+    description:
+      name: glob
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.3"
   googleapis:
     description:
       name: googleapis
@@ -67,12 +97,24 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.27.1"
+  html:
+    description:
+      name: html
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.12.2+2"
   http:
     description:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.11.3+7"
+  http_multi_server:
+    description:
+      name: http_multi_server
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.2"
   http_parser:
     description:
       name: http_parser
@@ -97,12 +139,36 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.9.3"
+  package_config:
+    description:
+      name: package_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.5"
   path:
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.9"
+  plugin:
+    description:
+      name: plugin
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.0"
+  pool:
+    description:
+      name: pool
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.4"
+  pub_semver:
+    description:
+      name: pub_semver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
   quiver:
     description:
       name: quiver
@@ -115,6 +181,36 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.5.6+1"
+  shelf:
+    description:
+      name: shelf
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.6.5+2"
+  shelf_static:
+    description:
+      name: shelf_static
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.4"
+  shelf_web_socket:
+    description:
+      name: shelf_web_socket
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.1"
+  source_map_stack_trace:
+    description:
+      name: source_map_stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.4"
+  source_maps:
+    description:
+      name: source_maps
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.10.1+1"
   source_span:
     description:
       name: source_span
@@ -139,6 +235,12 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.1.5"
+  test:
+    description:
+      name: test
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.12.15+1"
   typed_data:
     description:
       name: typed_data
@@ -157,10 +259,22 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.9.0+3"
+  watcher:
+    description:
+      name: watcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.9.7+2"
+  web_socket_channel:
+    description:
+      name: web_socket_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.4"
   yaml:
     description:
       name: yaml
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.9"
-sdk: ">=1.16.0 <2.0.0"
+sdk: ">=1.16.0 <1.20.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index d2db44f..3d63fe0 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -7,3 +7,4 @@ environment:
 dependencies:
   rpc: "^0.5.6+1"
   logging: "^0.11.3"
+  test: "^0.12.15+1"
diff --git a/test/TitamaIo_test.dart b/test/TitamaIo_test.dart
new file mode 100644
index 0000000..310197a
--- /dev/null
+++ b/test/TitamaIo_test.dart
@@ -0,0 +1,101 @@
+import 'dart:io';
+
+import 'package:test/test.dart';
+
+import '../lib/common/messages.dart';
+import '../lib/server/titamaio.dart';
+
+String jsonContent = '[{"title":"UlmApi","time":"18:00","day":"Monday","kind":"Lab","place":"Weinhof9","prof":"","turnin":"","id":0},{"title":"CCC Ulm","time":"20:00","day":"Monday","kind":"Meeting","place":"Cafe Einstein","prof":"","turnin":"","id":1}]';
+
+void main() {
+
+  group("JSON Serialization", () {
+
+    test("writeJson() writes a course list as a JSON object to a file.", () async {
+
+      List<Course> _courses = new List<Course>();
+
+      Course course = new Course();
+
+      course
+        ..title = "UlmApi"
+        ..time = "18:00"
+        ..day = "Monday"
+        ..id = 0
+        ..kind = "Lab"
+        ..place = "Weinhof9"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+
+      course = new Course();
+    
+      course
+        ..title = "CCC Ulm"
+        ..time = "20:00"
+        ..day = "Monday"
+        ..id = 1
+        ..kind = "Meeting"
+        ..place = "Cafe Einstein"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+
+      TitamaIo io = new TitamaIo();
+
+      await io.writeJson(_courses);
+
+      String content = await new File('data.json').readAsString();
+
+      expect(content, equals(jsonContent));
+
+    });
+
+    test("readJson() reads the JSON storage file and parses it", () async {
+
+      final filename = "data.json";
+
+      List<Course> _courses = new List<Course>();
+
+      Course course = new Course();
+
+      course
+        ..title = "UlmApi"
+        ..time = "18:00"
+        ..day = "Monday"
+        ..id = 0
+        ..kind = "Lab"
+        ..place = "Weinhof9"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+
+      course = new Course();
+    
+      course
+        ..title = "CCC Ulm"
+        ..time = "20:00"
+        ..day = "Monday"
+        ..id = 1
+        ..kind = "Meeting"
+        ..place = "Cafe Einstein"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+      
+      await new File(filename).writeAsString(jsonContent);
+
+      TitamaIo io = new TitamaIo();
+
+      List<Course> courses = await io.readJson();
+
+      expect(courses, equals(_courses));
+    });
+        
+  });
+
+}
diff --git a/test/TitamaIo_test.dart~ b/test/TitamaIo_test.dart~
new file mode 100644
index 0000000..310197a
--- /dev/null
+++ b/test/TitamaIo_test.dart~
@@ -0,0 +1,101 @@
+import 'dart:io';
+
+import 'package:test/test.dart';
+
+import '../lib/common/messages.dart';
+import '../lib/server/titamaio.dart';
+
+String jsonContent = '[{"title":"UlmApi","time":"18:00","day":"Monday","kind":"Lab","place":"Weinhof9","prof":"","turnin":"","id":0},{"title":"CCC Ulm","time":"20:00","day":"Monday","kind":"Meeting","place":"Cafe Einstein","prof":"","turnin":"","id":1}]';
+
+void main() {
+
+  group("JSON Serialization", () {
+
+    test("writeJson() writes a course list as a JSON object to a file.", () async {
+
+      List<Course> _courses = new List<Course>();
+
+      Course course = new Course();
+
+      course
+        ..title = "UlmApi"
+        ..time = "18:00"
+        ..day = "Monday"
+        ..id = 0
+        ..kind = "Lab"
+        ..place = "Weinhof9"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+
+      course = new Course();
+    
+      course
+        ..title = "CCC Ulm"
+        ..time = "20:00"
+        ..day = "Monday"
+        ..id = 1
+        ..kind = "Meeting"
+        ..place = "Cafe Einstein"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+
+      TitamaIo io = new TitamaIo();
+
+      await io.writeJson(_courses);
+
+      String content = await new File('data.json').readAsString();
+
+      expect(content, equals(jsonContent));
+
+    });
+
+    test("readJson() reads the JSON storage file and parses it", () async {
+
+      final filename = "data.json";
+
+      List<Course> _courses = new List<Course>();
+
+      Course course = new Course();
+
+      course
+        ..title = "UlmApi"
+        ..time = "18:00"
+        ..day = "Monday"
+        ..id = 0
+        ..kind = "Lab"
+        ..place = "Weinhof9"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+
+      course = new Course();
+    
+      course
+        ..title = "CCC Ulm"
+        ..time = "20:00"
+        ..day = "Monday"
+        ..id = 1
+        ..kind = "Meeting"
+        ..place = "Cafe Einstein"
+        ..prof = ""
+        ..turnin = "";
+
+      _courses.add(course);
+      
+      await new File(filename).writeAsString(jsonContent);
+
+      TitamaIo io = new TitamaIo();
+
+      List<Course> courses = await io.readJson();
+
+      expect(courses, equals(_courses));
+    });
+        
+  });
+
+}
diff --git a/test/packages b/test/packages
new file mode 120000
index 0000000..a16c405
--- /dev/null
+++ b/test/packages
@@ -0,0 +1 @@
+../packages
\ No newline at end of file