refactor: remove reliance on unittest_mixins.StdStreamCapturingMixin

This is another step toward removing unittest.TestCase as a base class.

1 files changed, 2 insertions, 6 deletions

diff --git a/tests/test_api.py b/tests/test_api.py
index 6c322795..ea625ff1 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -520,10 +520,8 @@ class ApiTest(CoverageTest):
         self.start_import_stop(cov, "hello")
         cov.get_data()
 
-        out = self.stdout()
+        out, err = self.stdouterr()
         assert "Hello\n" in out
-
-        err = self.stderr()
         assert textwrap.dedent("""\
             Coverage.py warning: Module sys has no Python source. (module-not-python)
             Coverage.py warning: Module xyzzy was never imported. (module-not-imported)
@@ -544,10 +542,8 @@ class ApiTest(CoverageTest):
         self.start_import_stop(cov, "hello")
         cov.get_data()
 
-        out = self.stdout()
+        out, err = self.stdouterr()
         assert "Hello\n" in out
-
-        err = self.stderr()
         assert "Coverage.py warning: Module sys has no Python source. (module-not-python)" in err
         assert "module-not-imported" not in err
         assert "no-data-collected" not in err