diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4be54ec..ea758fa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,6 +47,7 @@ endif()
 
 add_custom_command(
   OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/common-rust/src/testinterface.rs"
+         "${CMAKE_CURRENT_SOURCE_DIR}/common-rust/src/testimplementation.rs"
          "${CMAKE_CURRENT_SOURCE_DIR}/common-rust/src/types.rs"
   COMMAND ${CMAKE_BINARY_DIR}/rust_qt_binding_generator/rust_qt_binding_generator "${CMAKE_CURRENT_SOURCE_DIR}/bindings.json"
   DEPENDS rust_qt_binding_generator bindings.json
diff --git a/common-rust/src/testinterface.rs b/common-rust/src/testinterface.rs
new file mode 100644
index 0000000..826d5ea
--- /dev/null
+++ b/common-rust/src/testinterface.rs
@@ -0,0 +1,295 @@
+/* generated by rust_qt_binding_generator */
+#![allow(unknown_lints)]
+#![allow(mutex_atomic, needless_pass_by_value)]
+use libc::{c_int, c_void};
+use types::*;
+use std::sync::{Arc, Mutex};
+use std::ptr::null;
+
+use testimplementation::*;
+
+pub struct PersonQObject {}
+
+#[derive (Clone)]
+pub struct PersonEmitter {
+    qobject: Arc<Mutex<*const PersonQObject>>,
+    user_name_changed: fn(*const PersonQObject),
+    age_changed: fn(*const PersonQObject),
+    active_changed: fn(*const PersonQObject),
+    misc_changed: fn(*const PersonQObject),
+    icon_changed: fn(*const PersonQObject),
+}
+
+unsafe impl Send for PersonEmitter {}
+
+impl PersonEmitter {
+    fn clear(&self) {
+        *self.qobject.lock().unwrap() = null();
+    }
+    pub fn user_name_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.user_name_changed)(ptr);
+        }
+    }
+    pub fn age_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.age_changed)(ptr);
+        }
+    }
+    pub fn active_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.active_changed)(ptr);
+        }
+    }
+    pub fn misc_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.misc_changed)(ptr);
+        }
+    }
+    pub fn icon_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.icon_changed)(ptr);
+        }
+    }
+}
+
+pub trait PersonTrait {
+    fn create(emit: PersonEmitter) -> Self;
+    fn emit(&self) -> &PersonEmitter;
+    fn get_user_name(&self) -> String;
+    fn set_user_name(&mut self, value: String);
+    fn get_age(&self) -> c_int;
+    fn get_active(&self) -> bool;
+    fn set_active(&mut self, value: bool);
+    fn get_misc(&self) -> Variant;
+    fn set_misc(&mut self, value: Variant);
+    fn get_icon(&self) -> Vec<u8>;
+    fn set_icon(&mut self, value: Vec<u8>);
+}
+
+#[no_mangle]
+pub extern "C" fn person_new(qobject: *const PersonQObject,
+        user_name_changed: fn(*const PersonQObject),
+        age_changed: fn(*const PersonQObject),
+        active_changed: fn(*const PersonQObject),
+        misc_changed: fn(*const PersonQObject),
+        icon_changed: fn(*const PersonQObject))
+        -> *mut Person {
+    let emit = PersonEmitter {
+        qobject: Arc::new(Mutex::new(qobject)),
+        user_name_changed: user_name_changed,
+        age_changed: age_changed,
+        active_changed: active_changed,
+        misc_changed: misc_changed,
+        icon_changed: icon_changed,
+    };
+    let d = Person::create(emit);
+    Box::into_raw(Box::new(d))
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_free(ptr: *mut Person) {
+    Box::from_raw(ptr).emit().clear();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_user_name_get(ptr: *const Person,
+        p: *mut c_void,
+        set: fn(*mut c_void, QString)) {
+    let data = (&*ptr).get_user_name();
+    set(p, QString::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_user_name_set(ptr: *mut Person, v: QStringIn) {
+    (&mut *ptr).set_user_name(v.convert());
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_age_get(ptr: *const Person) -> c_int {
+    (&*ptr).get_age()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_active_get(ptr: *const Person) -> bool {
+    (&*ptr).get_active()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_active_set(ptr: *mut Person, v: bool) {
+    (&mut *ptr).set_active(v);
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_misc_get(ptr: *const Person,
+        p: *mut c_void,
+        set: fn(*mut c_void, QVariant)) {
+    let data = (&*ptr).get_misc();
+    set(p, QVariant::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_misc_set(ptr: *mut Person, v: QVariant) {
+    (&mut *ptr).set_misc(v.convert());
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_icon_get(ptr: *const Person,
+        p: *mut c_void,
+        set: fn(*mut c_void, QByteArray)) {
+    let data = (&*ptr).get_icon();
+    set(p, QByteArray::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_icon_set(ptr: *mut Person, v: QByteArray) {
+    (&mut *ptr).set_icon(v.convert());
+}
+
+pub struct DirectoryQObject {}
+
+#[derive (Clone)]
+pub struct DirectoryEmitter {
+    qobject: Arc<Mutex<*const DirectoryQObject>>,
+    path_changed: fn(*const DirectoryQObject),
+}
+
+unsafe impl Send for DirectoryEmitter {}
+
+impl DirectoryEmitter {
+    fn clear(&self) {
+        *self.qobject.lock().unwrap() = null();
+    }
+    pub fn path_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.path_changed)(ptr);
+        }
+    }
+}
+
+pub struct DirectoryList {
+    qobject: *const DirectoryQObject,
+    directory_begin_insert_rows: fn(*const DirectoryQObject, c_int, c_int),
+    directory_end_insert_rows: fn(*const DirectoryQObject),
+    directory_begin_remove_rows: fn(*const DirectoryQObject, c_int, c_int),
+    directory_end_remove_rows: fn(*const DirectoryQObject),
+}
+
+impl DirectoryList {
+    pub fn directory_begin_insert_rows(&self, first: c_int, last: c_int) {
+        (self.directory_begin_insert_rows)(self.qobject, first, last);
+    }
+    pub fn directory_end_insert_rows(&self) {
+        (self.directory_end_insert_rows)(self.qobject);
+    }
+    pub fn directory_begin_remove_rows(&self, first: c_int, last: c_int) {
+        (self.directory_begin_remove_rows)(self.qobject, first, last);
+    }
+    pub fn directory_end_remove_rows(&self) {
+        (self.directory_end_remove_rows)(self.qobject);
+    }
+}
+
+pub trait DirectoryTrait {
+    fn create(emit: DirectoryEmitter, model: DirectoryList) -> Self;
+    fn emit(&self) -> &DirectoryEmitter;
+    fn get_path(&self) -> String;
+    fn set_path(&mut self, value: String);
+    fn row_count(&self) -> c_int;
+    fn file_icon(&self, row: c_int) -> Variant;
+    fn file_path(&self, row: c_int) -> Variant;
+    fn file_name(&self, row: c_int) -> Variant;
+    fn file_permissions(&self, row: c_int) -> Variant;
+}
+
+#[no_mangle]
+pub extern "C" fn directory_new(qobject: *const DirectoryQObject,
+        path_changed: fn(*const DirectoryQObject),
+        directory_begin_insert_rows: fn(*const DirectoryQObject,
+            c_int,
+            c_int),
+        directory_end_insert_rows: fn(*const DirectoryQObject),
+        directory_begin_remove_rows: fn(*const DirectoryQObject,
+            c_int,
+            c_int),
+        directory_end_remove_rows: fn(*const DirectoryQObject))
+        -> *mut Directory {
+    let emit = DirectoryEmitter {
+        qobject: Arc::new(Mutex::new(qobject)),
+        path_changed: path_changed,
+    };
+    let model = DirectoryList {
+        qobject: qobject,
+        directory_begin_insert_rows: directory_begin_insert_rows,
+        directory_end_insert_rows: directory_end_insert_rows,
+        directory_begin_remove_rows: directory_begin_remove_rows,
+        directory_end_remove_rows: directory_end_remove_rows,
+    };
+    let d = Directory::create(emit, model);
+    Box::into_raw(Box::new(d))
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_free(ptr: *mut Directory) {
+    Box::from_raw(ptr).emit().clear();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_path_get(ptr: *const Directory,
+        p: *mut c_void,
+        set: fn(*mut c_void, QString)) {
+    let data = (&*ptr).get_path();
+    set(p, QString::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_path_set(ptr: *mut Directory, v: QStringIn) {
+    (&mut *ptr).set_path(v.convert());
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_row_count(ptr: *const Directory) -> c_int {
+    (&*ptr).row_count()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_data_file_icon(ptr: *const Directory,
+                                         row: c_int,
+                                         d: *mut c_void,
+                                         set: fn(*mut c_void, &QVariant)) {
+    let data = (& *ptr).file_icon(row);
+    set(d, &QVariant::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_data_file_path(ptr: *const Directory,
+                                         row: c_int,
+                                         d: *mut c_void,
+                                         set: fn(*mut c_void, &QVariant)) {
+    let data = (& *ptr).file_path(row);
+    set(d, &QVariant::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_data_file_name(ptr: *const Directory,
+                                         row: c_int,
+                                         d: *mut c_void,
+                                         set: fn(*mut c_void, &QVariant)) {
+    let data = (& *ptr).file_name(row);
+    set(d, &QVariant::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn directory_data_file_permissions(ptr: *const Directory,
+                                         row: c_int,
+                                         d: *mut c_void,
+                                         set: fn(*mut c_void, &QVariant)) {
+    let data = (& *ptr).file_permissions(row);
+    set(d, &QVariant::from(&data));
+}
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index a8ab941..08b357f 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -2,6 +2,8 @@ enable_testing()
 
 SET(GENERATOR "${CMAKE_BINARY_DIR}/rust_qt_binding_generator/rust_qt_binding_generator")
 
+add_custom_target("clean-rust")
+
 function(rust_test NAME DIRECTORY)
     set(SRC "${CMAKE_CURRENT_SOURCE_DIR}")
     set(DIR "${SRC}/${DIRECTORY}")
@@ -46,6 +48,15 @@ function(rust_test NAME DIRECTORY)
     add_test("${NAME}" "${NAME}")
     set_tests_properties("${NAME}" PROPERTIES DEPENDS "build_${NAME}")
 
+    add_custom_command(
+        OUTPUT "clean_${NAME}"
+        COMMAND cargo clean
+        WORKING_DIRECTORY "${DIR}"
+    )
+    add_custom_target("clean-${NAME}" DEPENDS "clean_${NAME}")
+    add_dependencies("clean-rust" "clean-${NAME}")
+
+
 endfunction(rust_test)
 
 rust_test(test_object rust_object)
diff --git a/tests/rust_object/src/interface.rs b/tests/rust_object/src/interface.rs
new file mode 100644
index 0000000..60e45bb
--- /dev/null
+++ b/tests/rust_object/src/interface.rs
@@ -0,0 +1,68 @@
+/* generated by rust_qt_binding_generator */
+#![allow(unknown_lints)]
+#![allow(mutex_atomic, needless_pass_by_value)]
+use libc::{c_int, c_void};
+use types::*;
+use std::sync::{Arc, Mutex};
+use std::ptr::null;
+
+use implementation::*;
+
+pub struct PersonQObject {}
+
+#[derive (Clone)]
+pub struct PersonEmitter {
+    qobject: Arc<Mutex<*const PersonQObject>>,
+    user_name_changed: fn(*const PersonQObject),
+}
+
+unsafe impl Send for PersonEmitter {}
+
+impl PersonEmitter {
+    fn clear(&self) {
+        *self.qobject.lock().unwrap() = null();
+    }
+    pub fn user_name_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.user_name_changed)(ptr);
+        }
+    }
+}
+
+pub trait PersonTrait {
+    fn create(emit: PersonEmitter) -> Self;
+    fn emit(&self) -> &PersonEmitter;
+    fn get_user_name(&self) -> String;
+    fn set_user_name(&mut self, value: String);
+}
+
+#[no_mangle]
+pub extern "C" fn person_new(qobject: *const PersonQObject,
+        user_name_changed: fn(*const PersonQObject))
+        -> *mut Person {
+    let emit = PersonEmitter {
+        qobject: Arc::new(Mutex::new(qobject)),
+        user_name_changed: user_name_changed,
+    };
+    let d = Person::create(emit);
+    Box::into_raw(Box::new(d))
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_free(ptr: *mut Person) {
+    Box::from_raw(ptr).emit().clear();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_user_name_get(ptr: *const Person,
+        p: *mut c_void,
+        set: fn(*mut c_void, QString)) {
+    let data = (&*ptr).get_user_name();
+    set(p, QString::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn person_user_name_set(ptr: *mut Person, v: QStringIn) {
+    (&mut *ptr).set_user_name(v.convert());
+}
diff --git a/tests/rust_object_types/src/implementation.rs b/tests/rust_object_types/src/implementation.rs
new file mode 100644
index 0000000..71a6b25
--- /dev/null
+++ b/tests/rust_object_types/src/implementation.rs
@@ -0,0 +1,27 @@
+use libc::c_int;
+use types::*;
+use interface::*;
+
+pub struct Object {
+    emit: ObjectEmitter,
+    value: Variant,
+}
+
+impl ObjectTrait for Object {
+    fn create(emit: ObjectEmitter) -> Object {
+        Object {
+            emit: emit,
+            value: Variant::None,
+        }
+    }
+    fn emit(&self) -> &ObjectEmitter {
+        &self.emit
+    }
+    fn get_value(&self) -> Variant {
+        self.value.clone()
+    }
+    fn set_value(&mut self, value: Variant) {
+        self.value = value;
+        self.emit.value_changed();
+    }
+}
diff --git a/tests/rust_object_types/src/interface.rs b/tests/rust_object_types/src/interface.rs
new file mode 100644
index 0000000..41e38e3
--- /dev/null
+++ b/tests/rust_object_types/src/interface.rs
@@ -0,0 +1,68 @@
+/* generated by rust_qt_binding_generator */
+#![allow(unknown_lints)]
+#![allow(mutex_atomic, needless_pass_by_value)]
+use libc::{c_int, c_void};
+use types::*;
+use std::sync::{Arc, Mutex};
+use std::ptr::null;
+
+use implementation::*;
+
+pub struct ObjectQObject {}
+
+#[derive (Clone)]
+pub struct ObjectEmitter {
+    qobject: Arc<Mutex<*const ObjectQObject>>,
+    value_changed: fn(*const ObjectQObject),
+}
+
+unsafe impl Send for ObjectEmitter {}
+
+impl ObjectEmitter {
+    fn clear(&self) {
+        *self.qobject.lock().unwrap() = null();
+    }
+    pub fn value_changed(&self) {
+        let ptr = *self.qobject.lock().unwrap();
+        if !ptr.is_null() {
+            (self.value_changed)(ptr);
+        }
+    }
+}
+
+pub trait ObjectTrait {
+    fn create(emit: ObjectEmitter) -> Self;
+    fn emit(&self) -> &ObjectEmitter;
+    fn get_value(&self) -> Variant;
+    fn set_value(&mut self, value: Variant);
+}
+
+#[no_mangle]
+pub extern "C" fn object_new(qobject: *const ObjectQObject,
+        value_changed: fn(*const ObjectQObject))
+        -> *mut Object {
+    let emit = ObjectEmitter {
+        qobject: Arc::new(Mutex::new(qobject)),
+        value_changed: value_changed,
+    };
+    let d = Object::create(emit);
+    Box::into_raw(Box::new(d))
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn object_free(ptr: *mut Object) {
+    Box::from_raw(ptr).emit().clear();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn object_value_get(ptr: *const Object,
+        p: *mut c_void,
+        set: fn(*mut c_void, QVariant)) {
+    let data = (&*ptr).get_value();
+    set(p, QVariant::from(&data));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn object_value_set(ptr: *mut Object, v: QVariant) {
+    (&mut *ptr).set_value(v.convert());
+}