test: writting better docstrings and comments

Author: Luiskitsu

Diff for: src/diffpy/morph/morphs/morphsqueeze.py

@@ -21,12 +21,12 @@ class MorphSqueeze(Morph):
     >>> from numpy.polynomial import Polynomial
     >>> from diffpy.morph.morphs.morphsqueeze import MorphSqueeze
 
-    >>> x_morph = np.linspace(0, 10, 101)
     >>> x_target = np.linspace(0, 10, 101)
+    >>> y_target = np.sin(x_target)
+    >>> x_morph = np.linspace(0, 10, 101)
     >>> squeeze_coeff = [0.1, -0.01, 0.005]
     >>> poly = Polynomial(squeeze_coeff)
     >>> y_morph = np.sin(x_morph + poly(x_morph))
-    >>> y_target = np.sin(x_target)
 
     >>> morph = MorphSqueeze()
     >>> morph.squeeze = squeeze_coeff

Diff for: tests/test_morphsqueeze.py

@@ -29,9 +29,9 @@
     (np.linspace(0, 10, 101), np.linspace(0, 10, 101)),
     # UC4: Target range wider than morph, same grid density
     (np.linspace(0, 10, 101), np.linspace(-2, 20, 221)),
-    # UC6: Target range wider than morph, finer target grid density
+    # UC6: Target range wider than morph, target grid density finer than morph
     (np.linspace(0, 10, 101), np.linspace(-2, 20, 421)),
-    # UC8: Target range wider than morph, finer morph grid density
+    # UC8: Target range wider than morph, morph grid density finer than target
     (np.linspace(0, 10, 401), np.linspace(-2, 20, 200)),
     # UC10: Morph range starts and ends earlier than target, same grid density
     (np.linspace(-2, 10, 121), np.linspace(0, 20, 201)),