Added test setup for vsi, added VS to fix db fixture

conftest.py

@@ -250,4 +250,19 @@ def create_numbers(key, value, old=False, bad=False, fail=False, annunciate=Fals
     fix.db.get_item("ROT").bad = False
     fix.db.get_item("ROT").fail = False
 
+    fix.db.define_item(
+        "VS",
+        "Vertical Speed",
+        "float",
+        -30000,
+        30000,
+        "ft/min",
+        50000,
+        "Min,Max" 
+    )
+    fix.db.set_value("ROT", 0)
+    fix.db.get_item("ROT").bad = False
+    fix.db.get_item("ROT").fail = False
+
+
     return fix

tests/instruments/vsi/test_vsi.py

@@ -0,0 +1,55 @@
+import pytest
+from unittest import mock
+from PyQt5.QtWidgets import QApplication
+from PyQt5.QtCore import Qt
+from PyQt5.QtGui import QColor, QBrush, QPen, QPaintEvent, QFontMetrics
+from pyefis.instruments import vsi
+import pyefis.hmi as hmi
+from tests.utils import track_calls
+
+@pytest.fixture
+def app(qtbot):
+    test_app = QApplication.instance()
+    if test_app is None:
+        test_app = QApplication([])
+    return test_app
+
+def test_vsi(fix,qtbot):
+    widget = vsi.VSI_Dial()
+    qtbot.addWidget(widget)
+    widget.resize(300, 200)
+    widget.show()
+    qtbot.waitExposed(widget)
+    qtbot.wait(1000)
+
+
+def test_vsi_pfd(fix,qtbot):
+    widget = vsi.VSI_PFD()
+    qtbot.addWidget(widget)
+    widget.resize(300, 200)
+    widget.show()
+    qtbot.waitExposed(widget)
+    qtbot.wait(1000)
+
+def test_vsi_as_trend_tape(fix,qtbot):
+    widget = vsi.AS_Trend_Tape()
+    qtbot.addWidget(widget)
+    widget.resize(300, 200)
+    widget.show()
+    qtbot.waitExposed(widget)
+    qtbot.wait(1000)
+
+def test_vsi_alt_trend_tape(fix,qtbot):
+    def data_values(arg):
+        if   arg == 'update_period': return None
+        elif arg == 'update_period2': return None
+        return None
+    widget = vsi.Alt_Trend_Tape()
+    widget.myparent = mock.MagicMock()
+    widget.myparent.get_config_item = data_values
+    qtbot.addWidget(widget)
+    widget.resize(300, 200)
+    widget.show()
+    qtbot.waitExposed(widget)
+    qtbot.wait(1000)
+