Add phase sense test

lvcnrpy/test/test_lvcnrcheck.py

@@ -1880,3 +1880,21 @@ class TestPeakNearZero(TestInterfield):
         (output, returncode) = helper.lvcnrcheck(['-f', '3', self.f.name], returncode=True)
         assert output.strip() == self.output
         assert returncode == 1
+
+
+class TestPhaseSense(TestInterfield):
+
+    name = 'phase-sense'
+
+    def test_invalid_phase_sense(self):
+        self.setOutput(
+            ('- [INVALID INTERFIELD] phase-sense '
+             '((2,2) phase is not decreasing on average)'))
+
+        nr = h5.File(self.f.name)
+        nr['phase_l2_m2']['Y'][:] *= -1.0
+        nr.close()
+
+        (output, returncode) = helper.lvcnrcheck(['-f', '3', self.f.name], returncode=True)
+        assert output.strip() == self.output
+        assert returncode == 1