Fix single_reference=True

CHANGES.md

@@ -1,6 +1,8 @@
 0.7 (unreleased)
 ----------------
 
+- Fix broken ``single_reference=True`` usage. [#43]
+
 0.6 (2023-11-15)
 ----------------
 

pytest_arraydiff/plugin.py

@@ -310,8 +310,10 @@ def pytest_runtest_call(self, item):
         # Find test name to use as plot name
         filename = compare.kwargs.get('filename', None)
         if filename is None:
-            filename = item.name + '.' + extension
-            if not single_reference:
+            if single_reference:
+                filename = item.function + '.' + extension
+            else:
+                filename = item.name + '.' + extension
                 filename = filename.replace('[', '_').replace(']', '_')
                 filename = filename.replace('_.' + extension, '.' + extension)
 

tests/test_pytest_arraydiff.py

@@ -152,5 +152,27 @@ def test_absolute_tolerance():
     return np.ones((3, 4)) * 1.6 + 1.4
 
 
+@pytest.mark.array_compare(
+        reference_dir=reference_dir,
+        atol=1.5,
+        file_format='fits',
+        single_reference=True)
+@pytest.mark.parametrize('spam', ('egg', 'bacon'))
+def test_single_reference(spam):
+    return np.ones((3, 4)) * 1.6 + 1.4
+
+
+class TestSingleReferenceClass:
+
+    @pytest.mark.array_compare(
+        reference_dir=reference_dir,
+        atol=1.5,
+        file_format='fits',
+        single_reference=True)
+    @pytest.mark.parametrize('spam', ('egg', 'bacon'))
+    def test_single_reference(self, spam):
+        return np.ones((3, 4)) * 1.6 + 1.4
+
+
 def test_nofile():
     pass