DOC: improve clarity of error messages

tacaswell · Antony Lee · tacaswell · commit c01a41dce5ae · 2021-05-26T20:16:06.000-04:00
Co-authored-by: Antony Lee &lt;antzer.lee@gmail.com&gt;
diff --git a/lib/matplotlib/backends/backend_agg.py b/lib/matplotlib/backends/backend_agg.py
@@ -170,11 +170,11 @@ def draw_path(self, gc, path, transform, rgbFace=None):
             except OverflowError as err:
                 cant_chunk = ''
                 if rgbFace is not None:
-                    cant_chunk += "- can not split path with rgbFace\n"
+                    cant_chunk += "- can not split filled path\n"
                 if gc.get_hatch() is not None:
-                    cant_chunk += "- can not split path with hatch\n"
+                    cant_chunk += "- can not split hatched path\n"
                 if not path.should_simplify:
-                    cant_chunk += "- this path says it can't be simplified\n"
+                    cant_chunk += "- path.should_simplify is False\n"
                 if len(cant_chunk):
                     msg = ("Exceeded cell block limit in Agg, however "
                            "for the following reasons:\n\n"
diff --git a/lib/matplotlib/tests/test_agg.py b/lib/matplotlib/tests/test_agg.py
@@ -282,21 +282,21 @@ def test_chunksize_hatch_fail(chunk_limit_setup):
 
     gc.set_hatch('/')
 
-    with pytest.raises(OverflowError, match='with hatch'):
+    with pytest.raises(OverflowError, match='hatched path'):
         ra.draw_path(gc, p, idt)
 
 
 def test_chunksize_rgbFace_fail(chunk_limit_setup):
     ra, gc, p, idt = chunk_limit_setup
 
-    with pytest.raises(OverflowError, match='with rgbFace'):
+    with pytest.raises(OverflowError, match='filled path'):
         ra.draw_path(gc, p, idt, (1, 0, 0))
 
 
 def test_chunksize_no_simplify_fail(chunk_limit_setup):
     ra, gc, p, idt = chunk_limit_setup
     p.should_simplify = False
-    with pytest.raises(OverflowError, match="can't be simplified"):
+    with pytest.raises(OverflowError, match="should_simplify is False"):
         ra.draw_path(gc, p, idt)
 
 
