Merge pull request #91 from gerritholl/get-observer-look-scalar

Add get_observer_look test for scalar case and update stickler config

.stickler.yml

@@ -1,6 +1,4 @@
 linters:
   flake8:
-    max-line-length: 120
-    fixer: true
-fixers:
-  enable: true
+    python: 3
+    config: setup.cfg

pyorbital/tests/test_orbital.py

@@ -298,6 +298,12 @@ def _xarr_conv(input):
         np.testing.assert_allclose(azi.data.compute(), self.exp_azi)
         np.testing.assert_allclose(elev.data.compute(), self.exp_elev)
 
+    def test_scalar(self):
+        """Test with scalar inputs."""
+        from pyorbital.orbital import get_observer_look
+        (azi, elev) = get_observer_look(0, 0, 30_000_000, self.t, 0, 0, 0)
+        np.testing.assert_allclose(elev, 90)
+
 
 class TestGetObserverLookNadir(unittest.TestCase):
     """Test the get_observer_look function when satellite is at nadir."""