TST #68 general fourc test setup

hkl/tests/class_fourc.py

@@ -0,0 +1,33 @@
+import pytest
+from ophyd import Component as Cpt
+from ophyd import (PseudoSingle, SoftPositioner)
+
+import gi
+gi.require_version('Hkl', '5.0')
+# NOTE: MUST call gi.require_version() BEFORE import hkl
+from hkl.diffract import E4CV
+
+
+class Fourc(E4CV):
+    h = Cpt(PseudoSingle, '')
+    k = Cpt(PseudoSingle, '')
+    l = Cpt(PseudoSingle, '')
+
+    omega = Cpt(SoftPositioner)
+    chi = Cpt(SoftPositioner)
+    phi = Cpt(SoftPositioner)
+    tth = Cpt(SoftPositioner)
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        for p in self.real_positioners:
+            p._set_position(0)  # give each a starting position
+
+
+@pytest.fixture(scope='function')
+def fourc():
+    fourc = Fourc('', name='fourc')
+    fourc.wait_for_connection()
+    # fourc._update_calc_energy()
+    return fourc