fix issue 182: testdir.inprocess_run now considers passed plugins

CHANGELOG

@@ -54,6 +54,8 @@ Changes between 2.2.4 and 2.3.0.dev
 - factory discovery no longer fails with magic global callables
   that provide no sane __code__ object (mock.call for example)
 
+- fix issue 182: testdir.inprocess_run now considers passed plugins
+
 - reporting refinements:
 
   - pytest_report_header now receives a "startdir" so that

_pytest/pytester.py

@@ -355,7 +355,7 @@ class TmpTestdir:
         if not plugins:
             plugins = []
         plugins.append(Collect())
-        ret = self.pytestmain(list(args), plugins=[Collect()])
+        ret = self.pytestmain(list(args), plugins=plugins)
         reprec = rec[0]
         reprec.ret = ret
         assert len(rec) == 1

testing/test_pytester.py

@@ -123,3 +123,13 @@ def test_makepyfile_unicode(testdir):
     except NameError:
         unichr = chr
     testdir.makepyfile(unichr(0xfffd))
+
+def test_inprocess_plugins(testdir):
+    class Plugin(object):
+        configured = False
+        def pytest_configure(self, config):
+            self.configured = True
+    plugin = Plugin()
+    testdir.inprocess_run([], [plugin])
+
+    assert plugin.configured