diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
new file mode 100644
index 0000000..b36d29a
--- /dev/null
+++ b/.github/workflows/integration-tests.yml
@@ -0,0 +1,41 @@
+name: Integration Tests
+on: [push, pull_request]
+
+jobs:
+
+  testing:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        python-version: [3.6, 3.7, 3.8]
+    env:
+      DISPLAY: ':99.0'
+
+    steps:
+    - name: Get repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: setup ${{ matrix.os }}
+      run: |
+        sudo apt install libxkbcommon-x11-0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-xinerama0 libxcb-xfixes0
+        /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -screen 0 1920x1200x24 -ac +extension GLX
+
+    - name: Install freeglut
+      run: |
+        sudo apt-get install freeglut3 freeglut3-dev
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8 pytest
+        pip install -r requirements.txt
+
+    - name: Test with pytest
+      run: |
+        python -m pytest tests/integration/
\ No newline at end of file
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 322f941..e59e511 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -1,17 +1,9 @@
-# This workflow will install Python dependencies, run tests and lint with a single version of Python
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
-
-name: Tests
-
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
+name: Unit Tests
+on: [push, pull_request]
 
 jobs:
-  build:
-    
+
+  testing:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -19,22 +11,27 @@ jobs:
         python-version: [3.6, 3.7, 3.8]
 
     steps:
-    - uses: actions/checkout@v2
+    - name: Get repository
+      uses: actions/checkout@v2
+
     - name: Set up Python 3.8
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install flake8 pytest
         pip install -r requirements.txt
+
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
     - name: Test with pytest
       run: |
-        python -m pytest tests/
+        python -m pytest tests/unit/
diff --git a/labelCloud/control/bbox_controller.py b/labelCloud/control/bbox_controller.py
index 14561cf..3e6affe 100644
--- a/labelCloud/control/bbox_controller.py
+++ b/labelCloud/control/bbox_controller.py
@@ -261,7 +261,7 @@ def update_all(self):
     @has_active_bbox_decorator
     def update_z_dial(self):
         self.view.dial_zrotation.blockSignals(True)  # To brake signal loop
-        self.view.dial_zrotation.setValue(self.get_active_bbox().get_z_rotation())
+        self.view.dial_zrotation.setValue(int(self.get_active_bbox().get_z_rotation()))
         self.view.dial_zrotation.blockSignals(False)
 
     def update_curr_class(self):
diff --git a/requirements.txt b/requirements.txt
index 94870a0..49ee2f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ numpy~=1.19.4
 PyQt5~=5.15.2
 PyOpenGL~=3.1.5
 open3d~=0.11.2
-pytest~=6.2.2
\ No newline at end of file
+pytest~=6.2.2
+pytest-qt~=4.0.1
\ No newline at end of file
diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
new file mode 100644
index 0000000..25a3049
--- /dev/null
+++ b/tests/integration/conftest.py
@@ -0,0 +1,39 @@
+import os
+import sys
+
+import pytest
+
+
+def pytest_configure(config):
+    os.chdir("../labelCloud")
+    print(f"Set working directory to {os.getcwd()}.")
+
+    sys.path.insert(0, "labelCloud")
+    print(f"Added labelCloud to Python path.")
+
+    import app  # preventing circular import
+
+
+@pytest.fixture
+def startup_pyqt(qtbot, qapp):
+    from control.controller import Controller
+    from view.gui import GUI
+
+    # Setup Model-View-Control structure
+    control = Controller()
+    view = GUI(control)
+    qtbot.addWidget(view)
+    qtbot.addWidget(view.glWidget)
+
+    # Install event filter to catch user interventions
+    qapp.installEventFilter(view)
+
+    # Start GUI
+    view.show()
+    return view, control
+
+
+@pytest.fixture
+def bbox():
+    from model.bbox import BBox
+    return BBox(cx=0, cy=0, cz=0, length=3, width=2, height=1)
diff --git a/tests/integration/test_gui.py b/tests/integration/test_gui.py
new file mode 100644
index 0000000..c95f3c9
--- /dev/null
+++ b/tests/integration/test_gui.py
@@ -0,0 +1,114 @@
+import os
+from PyQt5 import QtCore
+from PyQt5.QtWidgets import QAbstractSlider
+
+from control.config_manager import config
+
+
+def test_gui(qtbot, startup_pyqt):
+    view, controller = startup_pyqt
+
+    assert len(controller.pcd_manager.pcds) > 0
+    os.remove("labels/exemplary.json")
+    assert len(os.listdir("labels")) == 0
+    qtbot.mouseClick(view.button_next_pcd, QtCore.Qt.LeftButton, delay=0)
+    assert len(os.listdir("labels")) == 1
+
+    bbox = controller.bbox_controller.bboxes[0]
+    bbox.center = (0, 0, 0)
+    controller.bbox_controller.set_active_bbox(0)
+    qtbot.mouseClick(view.button_right, QtCore.Qt.LeftButton, delay=0)
+    qtbot.mouseClick(view.button_up, QtCore.Qt.LeftButton, delay=0)
+    qtbot.mouseClick(view.button_backward, QtCore.Qt.LeftButton, delay=0)
+    assert bbox.center == (0.03, 0.03, 0.03)
+
+    view.close()
+
+
+def test_bbox_control_with_buttons(qtbot, startup_pyqt, bbox):
+    view, controller = startup_pyqt
+
+    # Prepare test bounding box
+    controller.bbox_controller.bboxes = [bbox]
+    old_length, old_width, old_height = bbox.get_dimensions()
+    controller.bbox_controller.set_active_bbox(0)
+
+    # Translation
+    translation_step = config.getfloat("LABEL", "std_translation")
+    qtbot.mouseClick(view.button_right, QtCore.Qt.LeftButton, delay=0)
+    qtbot.mouseClick(view.button_up, QtCore.Qt.LeftButton, delay=0)
+    qtbot.mouseClick(view.button_backward, QtCore.Qt.LeftButton, delay=0)
+    assert bbox.center == (translation_step, translation_step, translation_step)
+    qtbot.mouseClick(view.button_left, QtCore.Qt.LeftButton, delay=0)
+    qtbot.mouseClick(view.button_down, QtCore.Qt.LeftButton, delay=0)
+    qtbot.mouseClick(view.button_forward, QtCore.Qt.LeftButton)
+    print("BBOX: %s" % [str(c) for c in bbox.get_center()])
+    assert bbox.center == (0.00, 0.00, 0.00)
+
+    # Scaling
+    scaling_step = config.getfloat("LABEL", "std_scaling")
+    qtbot.mouseClick(view.button_incr_dim, QtCore.Qt.LeftButton)
+    assert bbox.length == old_length + scaling_step
+    assert bbox.width == old_width / old_length * bbox.length
+    assert bbox.height == old_height / old_length * bbox.length
+
+    # Rotation
+    # TODO: Make dial configureable?
+    view.dial_zrotation.triggerAction(QAbstractSlider.SliderSingleStepAdd)
+    assert bbox.z_rotation == 1
+    view.dial_zrotation.triggerAction(QAbstractSlider.SliderPageStepAdd)
+    assert bbox.z_rotation == 11
+
+    view.close()
+
+
+def test_bbox_control_with_keyboard(qtbot, startup_pyqt, qapp, bbox):
+    view, controller = startup_pyqt
+
+    # Prepare test bounding box
+    controller.bbox_controller.bboxes = [bbox]
+    controller.bbox_controller.set_active_bbox(0)
+
+    # Translation
+    translation_step = config.getfloat("LABEL", "std_translation")
+    for letter in "dqw":
+        qtbot.keyClick(view, letter)
+    assert bbox.center == (translation_step, translation_step, translation_step)
+    translation_step = config.getfloat("LABEL", "std_translation")
+    for letter in "aes":
+        qtbot.keyClick(view, letter)
+    assert bbox.center == (0, 0, 0)
+
+    for key in [QtCore.Qt.Key_Right, QtCore.Qt.Key_Up, QtCore.Qt.Key_PageUp]:
+        qtbot.keyClick(view, key)
+    assert bbox.center == (translation_step, translation_step, translation_step)
+    for key in [QtCore.Qt.Key_Left, QtCore.Qt.Key_Down, QtCore.Qt.Key_PageDown]:
+        qtbot.keyClick(view, key)
+    assert bbox.center == (0, 0, 0)
+
+    # Rotation
+    rotation_step = config.getfloat("LABEL", "std_rotation")
+    config.set("USER_INTERFACE", "z_rotation_only", "False")
+    qtbot.keyClick(view, "y")
+    assert bbox.z_rotation == rotation_step
+    qtbot.keyClick(view, "x")
+    assert bbox.z_rotation == 0
+    qtbot.keyClick(view, QtCore.Qt.Key_Comma)
+    assert bbox.z_rotation == rotation_step
+    qtbot.keyClick(view, QtCore.Qt.Key_Period)
+    assert bbox.z_rotation == 0
+    qtbot.keyClick(view, "c")
+    assert bbox.y_rotation == rotation_step
+    qtbot.keyClick(view, "v")
+    assert bbox.y_rotation == 0
+    qtbot.keyClick(view, "b")
+    assert bbox.x_rotation == rotation_step
+    qtbot.keyClick(view, "n")
+    assert bbox.x_rotation == 0
+
+    # Shortcuts
+    qtbot.keyClick(view, QtCore.Qt.Key_Delete)
+    assert len(controller.bbox_controller.bboxes) == 0
+    assert controller.bbox_controller.get_active_bbox() is None
+
+    view.close()
diff --git a/tests/integration/test_labeling.py b/tests/integration/test_labeling.py
new file mode 100644
index 0000000..02b8f3c
--- /dev/null
+++ b/tests/integration/test_labeling.py
@@ -0,0 +1,41 @@
+import pytest
+from PyQt5 import QtCore
+from PyQt5.QtCore import QPoint
+
+from control.config_manager import config
+from model.bbox import BBox
+
+
+def test_picking_mode(qtbot, startup_pyqt):
+    view, control = startup_pyqt
+    control.bbox_controller.bboxes = []
+
+    qtbot.mouseClick(view.button_activate_picking, QtCore.Qt.LeftButton, delay=1000)
+    qtbot.mouseClick(view.glWidget, QtCore.Qt.LeftButton, pos=QPoint(500, 500), delay=1000)
+
+    assert len(control.bbox_controller.bboxes) == 1
+    new_bbox = control.bbox_controller.bboxes[0]
+    assert new_bbox.center == tuple(pytest.approx(x, 0.01) for x in [-0.2479, -0.2245, 0.0447])
+
+    assert new_bbox.length == config.getfloat("LABEL", "std_boundingbox_length")
+    assert new_bbox.width == config.getfloat("LABEL", "std_boundingbox_width")
+    assert new_bbox.height == config.getfloat("LABEL", "std_boundingbox_height")
+    assert new_bbox.z_rotation == new_bbox.y_rotation == new_bbox.x_rotation == 0
+
+
+def test_spanning_mode(qtbot, startup_pyqt):
+    view, control = startup_pyqt
+    control.bbox_controller.bboxes = []
+    config.set("USER_INTERFACE", "z_rotation_only", "True")
+
+    qtbot.mouseClick(view.button_activate_spanning, QtCore.Qt.LeftButton, delay=10)
+    qtbot.mouseClick(view.glWidget, QtCore.Qt.LeftButton, pos=QPoint(431, 475), delay=20)
+    qtbot.mouseClick(view.glWidget, QtCore.Qt.LeftButton, pos=QPoint(506, 367), delay=20)
+    qtbot.mouseClick(view.glWidget, QtCore.Qt.LeftButton, pos=QPoint(572, 439), delay=20)
+    qtbot.mouseClick(view.glWidget, QtCore.Qt.LeftButton, pos=QPoint(607, 556), delay=20)
+
+    assert len(control.bbox_controller.bboxes) == 1
+    new_bbox: BBox = control.bbox_controller.bboxes[0]
+    assert new_bbox.center == tuple(pytest.approx(x, 0.01) for x in [-0.2100, -0.2348, 0.0568])
+    assert new_bbox.get_dimensions() == tuple(pytest.approx(x, 0.01) for x in [0.7344, 0.5305, 0.1212])
+    assert new_bbox.get_rotations() == tuple(pytest.approx(x % 360, 0.5) for x in [0, 0, 55.2205])
diff --git a/tests/preparation.py b/tests/preparation.py
deleted file mode 100644
index 7278074..0000000
--- a/tests/preparation.py
+++ /dev/null
@@ -1,4 +0,0 @@
-import sys
-sys.path.insert(0, "labelCloud")
-
-from labelCloud import app  # preventing circular import
\ No newline at end of file
diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py
new file mode 100644
index 0000000..4652b74
--- /dev/null
+++ b/tests/unit/conftest.py
@@ -0,0 +1,12 @@
+import os
+import sys
+
+
+def pytest_configure(config):
+    os.chdir("../labelCloud")
+    print(f"Set working directory to {os.getcwd()}.")
+
+    sys.path.insert(0, "labelCloud")
+    print(f"Added labelCloud to Python path.")
+
+    import app  # preventing circular import
\ No newline at end of file
diff --git a/tests/test_label_export.py b/tests/unit/test_label_export.py
similarity index 99%
rename from tests/test_label_export.py
rename to tests/unit/test_label_export.py
index fca3349..e80aa73 100644
--- a/tests/test_label_export.py
+++ b/tests/unit/test_label_export.py
@@ -2,7 +2,6 @@
 import json
 import os
 import pytest
-import preparation
 
 from model.bbox import BBox
 from control.label_manager import LabelManager
diff --git a/tests/test_label_import.py b/tests/unit/test_label_import.py
similarity index 99%
rename from tests/test_label_import.py
rename to tests/unit/test_label_import.py
index 597dd8d..ceaa8be 100644
--- a/tests/test_label_import.py
+++ b/tests/unit/test_label_import.py
@@ -1,7 +1,6 @@
 import os
 
 import pytest
-import preparation
 from control.label_manager import LabelManager