fix: improve an error message. #803

Fixes #803.

1 files changed, 4 insertions, 2 deletions

diff --git a/tests/test_data.py b/tests/test_data.py
index fe37bd9e..eac9c36f 100644
--- a/tests/test_data.py
+++ b/tests/test_data.py
@@ -159,13 +159,15 @@ class CoverageDataTest(DataTestHelpers, CoverageTest):
     def test_cant_add_arcs_with_lines(self):
         covdata = CoverageData()
         covdata.add_lines(LINES_1)
-        with pytest.raises(CoverageException, match="Can't add arcs to existing line data"):
+        msg = "Can't add branch measurements to existing line data"
+        with pytest.raises(CoverageException, match=msg):
             covdata.add_arcs(ARCS_3)
 
     def test_cant_add_lines_with_arcs(self):
         covdata = CoverageData()
         covdata.add_arcs(ARCS_3)
-        with pytest.raises(CoverageException, match="Can't add lines to existing arc data"):
+        msg = "Can't add line measurements to existing branch data"
+        with pytest.raises(CoverageException, match=msg):
             covdata.add_lines(LINES_1)
 
     def test_touch_file_with_lines(self):