Fix capturing with --setup-only/--setup-plan

_pytest/python.py

@@ -2552,7 +2552,7 @@ class FixtureDef:
         config = self._fixturemanager.config
         capman = config.pluginmanager.getplugin('capturemanager')
         if capman:
-            capman.suspendcapture()
+            out, err = capman.suspendcapture()
 
         tw = config.get_terminal_writer()
         tw.line()
@@ -2572,6 +2572,8 @@ class FixtureDef:
 
         if capman:
             capman.resumecapture()
+            sys.stdout.write(out)
+            sys.stderr.write(err)
 
     def __repr__(self):
         return ("<FixtureDef name=%r scope=%r baseid=%r >" %

_pytest/runner.py

@@ -91,7 +91,7 @@ def show_test_item(item):
     tw = item.config.get_terminal_writer()
     tw.line()
     tw.write(' ' * 8)
-    tw.write('{0}'.format(item._nodeid))
+    tw.write(item._nodeid)
     used_fixtures = sorted(item._fixtureinfo.name2fixturedefs.keys())
     if used_fixtures:
         tw.write(' (fixtures used: {0})'.format(', '.join(used_fixtures)))

testing/python/setup_only.py

@@ -179,3 +179,24 @@ def test_dynamic_fixture_request(testdir):
         '*SETUP    F dynamically_requested_fixture',
         '*TEARDOWN F dynamically_requested_fixture'
     ])
+
+
+def test_capturing(testdir):
+    p = testdir.makepyfile('''
+        import pytest, sys
+        @pytest.fixture()
+        def one():
+            sys.stdout.write('this should be captured')
+            sys.stderr.write('this should also be captured')
+        @pytest.fixture()
+        def two(one):
+            assert 0
+        def test_capturing(two):
+            pass
+    ''')
+
+    result = testdir.runpytest('--setup-only', p)
+    result.stdout.fnmatch_lines([
+        'this should be captured',
+        'this should also be captured'
+    ])