fix tests

Author: nschloe

test/test_basic_sin.py

@@ -25,4 +25,4 @@ def plot():
 
 def test():
     phash = Phash(plot())
-    assert phash.phash == '1f86e1f521c6e5c1', phash.get_details()
+    assert phash.phash == '1f36e5ce21c1e5c1', phash.get_details()

test/test_image_plot.py

@@ -51,12 +51,12 @@ def plot2():
 
 
 @pytest.mark.parametrize(
-    'plot, phash', [
+    'plot, reference_phash', [
         (plot1, '455361ec211d72fb'),
         (plot2, '7558d3b30f634b06'),
     ]
     )
-def test(plot, phash):
+def test(plot, reference_phash):
     phash = helpers.Phash(plot())
-    assert phash.phash == phash, phash.get_details()
+    assert phash.phash == reference_phash, phash.get_details()
     return

test/test_noise.py

@@ -45,14 +45,14 @@ def plot2():
 
 
 @pytest.mark.parametrize(
-    'plot, phash', [
+    'plot, reference_phash', [
         (plot1, 'f55a0bb503fd0354'),
         (plot2, '5f5ca33da3816983'),
     ]
     )
-def test(plot, phash):
+def test(plot, reference_phash):
     phash = helpers.Phash(plot())
-    assert phash.phash == phash, phash.get_details()
+    assert phash.phash == reference_phash, phash.get_details()
     return