Use a windows-friendly way to find files in line_data

1 files changed, 2 insertions, 3 deletions

diff --git a/tests/test_arcs.py b/tests/test_arcs.py
index 6f28d05e..81fa7e6a 100644
--- a/tests/test_arcs.py
+++ b/tests/test_arcs.py
@@ -1,11 +1,10 @@
 """Tests for Coverage.py's arc measurement."""
 
-import os.path
-
 from tests.coveragetest import CoverageTest
 
 import coverage
 from coverage import env
+from coverage.files import abs_file
 
 
 class SimpleArcTest(CoverageTest):
@@ -649,5 +648,5 @@ class LineDataTest(CoverageTest):
         self.start_import_stop(cov, "fun1")
 
         cov._harvest_data()
-        fun1_lines = cov.data.line_data()[os.path.abspath("fun1.py")]
+        fun1_lines = cov.data.line_data()[abs_file("fun1.py")]
         self.assertEqual(fun1_lines, [1, 2, 5])