diff --git a/aircox/tests/conftest.py b/aircox/tests/conftest.py
index bb93cca..f352e75 100644
--- a/aircox/tests/conftest.py
+++ b/aircox/tests/conftest.py
@@ -12,6 +12,31 @@ def stations():
     return baker.make(models.Station, _quantity=2)
 
 
+@pytest.fixture
+def station_default():
+    return baker.make(models.Station, default=True)
+
+
+@pytest.fixture
+def station_active():
+    return baker.make(models.Station, active=True)
+
+
+@pytest.fixture
+def ports():
+    compatible_param = (
+        [models.Port.TYPE_ICECAST, models.Port.DIRECTION_OUTPUT],
+        [models.Port.TYPE_FILE, models.Port.DIRECTION_OUTPUT],
+        [models.Port.TYPE_HTTP, models.Port.DIRECTION_INPUT],
+        [models.Port.TYPE_HTTPS, models.Port.DIRECTION_INPUT],
+    )
+    items = [
+        baker.make(models.Port, type=param[0], direction=param[1])
+        for param in compatible_param
+    ]
+    return items
+
+
 @pytest.fixture
 def programs(stations):
     items = list(
diff --git a/aircox/tests/models/test_station.py b/aircox/tests/models/test_station.py
new file mode 100644
index 0000000..ef7ee4d
--- /dev/null
+++ b/aircox/tests/models/test_station.py
@@ -0,0 +1,141 @@
+import pytest
+import random
+from model_bakery import baker
+from aircox.models import Station, Port
+from aircox.conf import settings
+
+
+@pytest.mark.django_db
+class TestStationQuerySet:
+    # default method : not possible to have several stations by default.
+    # default method : return a selected instance of station but do not save it.
+    def test_default_without_default_station(self, stations):
+        for station in stations:
+            station.default = False
+            station.save()
+        assert Station.objects.default() is not None
+
+    def test_default_by_pk(self, stations):
+        for station in stations:
+            station.default = False
+            station.save()
+        assert Station.objects.default(station=stations[0].pk) == stations[0]
+
+    def test_default_with_default_station(self, stations, station_default):
+        for station in stations:
+            station.default = False
+            station.save()
+        assert Station.objects.default() == station_default
+
+    def test_active(self, stations, station_active):
+        for station in stations:
+            station.active = False
+            station.save()
+            assert station not in Station.objects.active()
+        assert station_active in Station.objects.active()
+
+
+@pytest.mark.django_db
+class TestStation:
+    def test_stream_field_filled(self, stations):
+        streams_urls = "http://radiocampus.be/stream1.mp3\nhttp://radiocampus.be/stream2.mp3"
+        stations[0].audio_streams = streams_urls
+        assert stations[0].streams == [
+            "http://radiocampus.be/stream1.mp3",
+            "http://radiocampus.be/stream2.mp3",
+        ]
+
+    def test_stream_field_empty(self, stations):
+        stations[0].audio_streams = None
+        assert stations[0].streams == []
+
+    def test__str__(self, stations):
+        for station in stations:
+            assert station.name == station.__str__()
+
+    def test_save_without_path(self, stations):
+        stations[0].path = None
+        stations[0].slug = "a-slug-with-dash"
+        stations[0].save()
+        assert (
+            stations[0].path
+            == settings.CONTROLLERS_WORKING_DIR + "\\a_slug_with_dash"
+        )
+
+    def test_save_default_station_while_anotherone_is_default(
+        self, stations, station_default
+    ):
+        for station in stations:
+            station.default = False
+            station.save()
+        stations[0].default = True
+        stations[0].save()
+        assert Station.objects.filter(default=True).count() == 1
+        assert stations[0] in Station.objects.filter(default=True)
+
+
+@pytest.mark.django_db
+class TestPortQuerySet:
+    def test_active_value_true(self, ports):
+        for port in ports:
+            random_value = random.choice([True, False])
+            port.active = random_value
+            port.save()
+        active_ports = Port.objects.active(value=True)
+        for port in active_ports:
+            assert port.active == True
+
+    def test_active_value_false(self, ports):
+        for port in ports:
+            random_value = random.choice([True, False])
+            port.active = random_value
+            port.save()
+        for port in Port.objects.active(value=False):
+            assert port.active == False
+
+    def test_output(self, ports):
+        for port in Port.objects.output():
+            assert port.direction == Port.DIRECTION_OUTPUT
+
+    def test_input(self, ports):
+        for port in Port.objects.input():
+            assert port.direction == Port.DIRECTION_INPUT
+
+
+@pytest.mark.django_db
+class TestPort:
+    def test__str__(self, ports):
+        for port in ports:
+            if (
+                port.type == Port.TYPE_ICECAST
+                and port.direction == Port.DIRECTION_OUTPUT
+            ):
+                assert port.__str__() == "output: icecast #1"
+
+    def test_is_valid_type_and_type_is_input(self, ports):
+        for port in ports:
+            if port.direction == Port.DIRECTION_INPUT:
+                assert port.is_valid_type() == True
+
+    def test_is_valid_type_and_type_is_not_input(self, ports):
+        for port in ports:
+            if port.direction == Port.DIRECTION_OUTPUT:
+                assert port.is_valid_type() == True
+
+    def test_save_with_valid_type_icecast_output(self, ports):
+        assert Port.objects.get(id=ports[0].id) is not None
+
+    def test_save_with_valid_type_file_output(self, ports):
+        assert Port.objects.get(id=ports[1].id) is not None
+
+    def test_save_with_valid_type_http_input(self, ports):
+        assert Port.objects.get(id=ports[2].id) is not None
+
+    def test_save_with_valid_type_https_input(self, ports):
+        assert Port.objects.get(id=ports[3].id) is not None
+
+    def test_save_without_valid_type(self):
+        with pytest.raises(ValueError):
+            baker.make(
+                Port, type=Port.TYPE_HTTP, direction=Port.DIRECTION_OUTPUT
+            )