Merge pull request #255 from bobleesj/pytest-warning

Refactor `test_scale_to` function - continue to establish good practices

Author: sbillinge

news/pytest-warning.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* No news added
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>

src/diffpy/utils/transforms.py

@@ -14,7 +14,7 @@
     "The supplied input array and wavelength will result in an impossible two-theta. "
     "Please check these values and re-instantiate the DiffractionObject with correct values."
 )
-inf_output_wmsg = (
+inf_output_imsg = (
     "INFO: The largest output value in the array is infinite. This is allowed, but it will not be plotted."
 )
 
@@ -135,7 +135,7 @@ def q_to_d(q):
         The array of :math:`d` values np.array([ds]).
     """
     if 0 in q:
-        print(inf_output_wmsg)
+        print(inf_output_imsg)
     return 2.0 * np.pi / copy(q)
 
 
@@ -169,7 +169,7 @@ def tth_to_d(tth, wavelength):
             d[i] = i
         return d
     if 0 in q:
-        warnings.warn(inf_output_wmsg)
+        print(inf_output_imsg)
     return 2.0 * np.pi / copy(q)
 
 
@@ -189,7 +189,7 @@ def d_to_q(d):
         The units of q must be reciprocal of the units of wavelength.
     """
     if 0 in d:
-        warnings.warn(inf_output_wmsg)
+        print(inf_output_imsg)
     return 2.0 * np.pi / copy(d)