diff --git a/test/index.js b/test/index.js
index 732308b..eab76c2 100644
--- a/test/index.js
+++ b/test/index.js
@@ -2,3 +2,4 @@ require("./simple")
 require("./classes")
 require("./typescript/ts.js")
 require("./babel/babel-compiled.js")
+require("./mobx")
diff --git a/test/mobx.js b/test/mobx.js
new file mode 100644
index 0000000..da4a562
--- /dev/null
+++ b/test/mobx.js
@@ -0,0 +1,128 @@
+const mobx = require("mobx")
+const test = require("tape")
+const {
+    object,
+    custom,
+    createModelSchema,
+    createSimpleSchema,
+    serialize,
+    deserialize,
+} = require("../")
+
+test("(de-)serialization for mobx observables", t => {
+    class TodoList {
+        // mobx.decorate requires pre-existing class properties
+        data = undefined
+        constructor() {
+            this.data = {
+                list: []
+            }
+        }
+    }
+
+    class Todo {
+        constructor(title) {
+            this.title = title
+        }
+    }
+
+    mobx.decorate(TodoList, {
+        data: mobx.observable,
+    })
+
+    const asyncTodoResolver = (v, ctx, old, cb) => {
+        setTimeout(() => cb(null, v.map(title => { return new Todo(title) })), 0)
+    }
+    const syncTodoResolver = (v, ctx, old, cb) => {
+        cb(null, v.map(title => { return new Todo(title) }))
+    }
+ 
+    const asyncModelSchema = createModelSchema(TodoList, {
+        data: object(createSimpleSchema({
+            list: custom(
+                v => v.map(t => t.title),
+                (v, ctx, old, cb) => asyncTodoResolver(v, ctx, old, cb)
+            )
+        }))
+    })
+
+    const syncModelSchema = createModelSchema(TodoList, {
+        data: object(createSimpleSchema({
+            list: custom(
+                v => v.map(t => t.title),
+                (v, ctx, old, cb) => syncTodoResolver(v, ctx, old, cb)
+            )
+        }))
+    })
+
+    test("serialize", t2 => {
+        const todoList = new TodoList()
+        todoList.data.list.push(
+            new Todo("todo 1"),
+            new Todo("todo 2"),
+        )
+        const json = serialize(syncModelSchema, todoList)
+
+        t.deepEqual(json, {
+            data: {
+                list: [
+                    "todo 1",
+                    "todo 2"
+                ]
+            }
+        })
+        t2.end()
+    })
+
+    test("sync deserialize", t2 => {
+        const json = {
+            data: {
+                list: [
+                    "todo 1",
+                    "todo 2"
+                ]
+            }
+        }
+
+        deserialize(syncModelSchema, json, (err, todoList) => {
+            t.ok(todoList instanceof TodoList, "deserialized object is an instance of TodoList")
+            t.notEqual(todoList.data, undefined, "TodoList.data is not undefined")
+            const data = todoList.data || undefined
+            t.ok(Array.isArray(todoList.data.list), "TodoList.data.list is an array")
+            const list = data.list || undefined
+            const listL = list ? list.length : undefined
+
+            t.equal(list ? list.length : undefined, 2, "TodoList.data.list has two elements")
+            t.equal(listL ? list[0].title : undefined, "todo 1", "TodoList's 1st todo has title todo 1")
+            t.equal(listL ? list[1].title : undefined, "todo 2", "TodoList's 2nd todo has title todo 2")
+            t2.end()
+        })
+    })
+
+    test("async deserialize", t2 => {
+        const json = {
+            data: {
+                list: [
+                    "todo 1",
+                    "todo 2"
+                ]
+            }
+        }
+
+        deserialize(asyncModelSchema, json, (err, todoList) => {
+            t.ok(todoList instanceof TodoList, "deserialized object is an instance of TodoList")
+            t.notEqual(todoList.data, undefined, "TodoList.data is not undefined")
+            const data = todoList.data || undefined
+            t.ok(Array.isArray(todoList.data.list), "TodoList.data.list is an array")
+            const list = data.list || undefined
+            const listL = list ? list.length : undefined
+
+            t.equal(list ? list.length : undefined, 2, "TodoList.data.list has two elements")
+            t.equal(listL ? list[0].title : undefined, "todo 1", "TodoList's 1st todo has title todo 1")
+            t.equal(listL ? list[1].title : undefined, "todo 2", "TodoList's 1st todo has title todo 2")
+            t2.end()
+        })
+    })
+
+    t.end()
+})