Consider --color option in more places which deal with TerminalWriters

CHANGELOG

@@ -1,6 +1,9 @@
 2.7.3 (compared to 2.7.2)
 -----------------------------
 
+- fix issue856: consider --color parameter in all outputs (for example
+  --fixtures). Thanks Barney Gale for the report and Bruno Oliveira for the PR.
+
 - fix issue744: fix for ast.Call changes in Python 3.5+.  Thanks
   Guido van Rossum, Matthias Bussonnier, Stefan Zimmermann and
   Thomas Kluyver.

_pytest/config.py

@@ -933,3 +933,16 @@ def setns(obj, dic):
             #if obj != pytest:
             #    pytest.__all__.append(name)
             setattr(pytest, name, value)
+
+
+def create_terminal_writer(config, *args, **kwargs):
+    """Create a TerminalWriter instance configured according to the options
+    in the config object. Every code which requires a TerminalWriter object
+    and has access to a config object should use this function.
+    """
+    tw = py.io.TerminalWriter(*args, **kwargs)
+    if config.option.color == 'yes':
+        tw.hasmarkup = True
+    if config.option.color == 'no':
+        tw.hasmarkup = False
+    return tw

_pytest/genscript.py

@@ -66,9 +66,10 @@ def pytest_addoption(parser):
         help="create standalone pytest script at given target path.")
 
 def pytest_cmdline_main(config):
+    import _pytest.config
     genscript = config.getvalue("genscript")
     if genscript:
-        tw = py.io.TerminalWriter()
+        tw = _pytest.config.create_terminal_writer(config)
         deps =  ['py', '_pytest', 'pytest']
         if sys.version_info < (2,7):
             deps.append("argparse")

_pytest/helpconfig.py

@@ -64,7 +64,8 @@ def pytest_cmdline_main(config):
         return 0
 
 def showhelp(config):
-    tw = py.io.TerminalWriter()
+    import _pytest.config
+    tw = _pytest.config.create_terminal_writer(config)
     tw.write(config._parser.optparser.format_help())
     tw.line()
     tw.line()

_pytest/mark.py

@@ -44,9 +44,10 @@ def pytest_addoption(parser):
 
 
 def pytest_cmdline_main(config):
+    import _pytest.config
     if config.option.markers:
         config.do_configure()
-        tw = py.io.TerminalWriter()
+        tw = _pytest.config.create_terminal_writer(config)
         for line in config.getini("markers"):
             name, rest = line.split(":", 1)
             tw.write("@pytest.mark.%s:" % name, bold=True)

_pytest/pdb.py

@@ -23,23 +23,27 @@ def pytest_configure(config):
     old = (pdb.set_trace, pytestPDB._pluginmanager)
     def fin():
         pdb.set_trace, pytestPDB._pluginmanager = old
+        pytestPDB._config = None
     pdb.set_trace = pytest.set_trace
     pytestPDB._pluginmanager = config.pluginmanager
+    pytestPDB._config = config
     config._cleanup.append(fin)
 
 class pytestPDB:
     """ Pseudo PDB that defers to the real pdb. """
     _pluginmanager = None
+    _config = None
 
     def set_trace(self):
         """ invoke PDB set_trace debugging, dropping any IO capturing. """
+        import _pytest.config
         frame = sys._getframe().f_back
         capman = None
         if self._pluginmanager is not None:
             capman = self._pluginmanager.getplugin("capturemanager")
             if capman:
                 capman.suspendcapture(in_=True)
-            tw = py.io.TerminalWriter()
+            tw = _pytest.config.create_terminal_writer(self._config)
             tw.line()
             tw.sep(">", "PDB set_trace (IO-capturing turned off)")
             self._pluginmanager.hook.pytest_enter_pdb()

_pytest/python.py

@@ -947,9 +947,10 @@ def showfixtures(config):
     return wrap_session(config, _showfixtures_main)
 
 def _showfixtures_main(config, session):
+    import _pytest.config
     session.perform_collect()
     curdir = py.path.local()
-    tw = py.io.TerminalWriter()
+    tw = _pytest.config.create_terminal_writer(config)
     verbose = config.getvalue("verbose")
 
     fm = session._fixturemanager

_pytest/terminal.py

@@ -87,6 +87,7 @@ class WarningReport:
 
 class TerminalReporter:
     def __init__(self, config, file=None):
+        import _pytest.config
         self.config = config
         self.verbosity = self.config.option.verbose
         self.showheader = self.verbosity >= 0
@@ -98,11 +99,8 @@ class TerminalReporter:
         self.startdir = py.path.local()
         if file is None:
             file = sys.stdout
-        self._tw = self.writer = py.io.TerminalWriter(file)
-        if self.config.option.color == 'yes':
-            self._tw.hasmarkup = True
-        if self.config.option.color == 'no':
-            self._tw.hasmarkup = False
+        self._tw = self.writer = _pytest.config.create_terminal_writer(config,
+                                                                       file)
         self.currentfspath = None
         self.reportchars = getreportopt(config)
         self.hasmarkup = self._tw.hasmarkup

testing/python/fixture.py

@@ -623,6 +623,11 @@ class TestRequestBasic:
             *arg1*
         """)
 
+    def test_show_fixtures_color_yes(self, testdir):
+        testdir.makepyfile("def test_this(): assert 1")
+        result = testdir.runpytest('--color=yes', '--fixtures')
+        assert '\x1b[32mtmpdir' in result.stdout.str()
+
     def test_newstyle_with_request(self, testdir):
         testdir.makepyfile("""
             import pytest