- refine lsof checking

- make runpytest() create an inline testing process instead of
  a subprocess one

--HG--
branch : testrefactor

testing/python/collect.py

@@ -626,10 +626,8 @@ def test_setup_only_available_in_subdir(testdir):
     """))
     sub1.join("test_in_sub1.py").write("def test_1(): pass")
     sub2.join("test_in_sub2.py").write("def test_2(): pass")
-    result = testdir.inline_runpytest("-v", "-s")
-    result.stdout.fnmatch_lines([
-        "*2 passed*"
-    ])
+    result = testdir.runpytest("-v", "-s")
+    result.assert_outcomes(passed=2)
 
 def test_modulecol_roundtrip(testdir):
     modcol = testdir.getmodulecol("pass", withinit=True)

testing/python/fixture.py

@@ -99,10 +99,8 @@ class TestFillFixtures:
 
         sub1.join("test_in_sub1.py").write("def test_1(arg1): pass")
         sub2.join("test_in_sub2.py").write("def test_2(arg2): pass")
-        result = testdir.inline_runpytest("-v")
-        result.stdout.fnmatch_lines([
-            "*2 passed*"
-        ])
+        result = testdir.runpytest("-v")
+        result.assert_outcomes(passed=2)
 
     def test_extend_fixture_module_class(self, testdir):
         testfile = testdir.makepyfile("""

testing/python/metafunc.py

@@ -663,7 +663,7 @@ class TestMetafuncFunctional:
         """))
         sub1.join("test_in_sub1.py").write("def test_1(): pass")
         sub2.join("test_in_sub2.py").write("def test_2(): pass")
-        result = testdir.inline_runpytest("-v", "-s", sub1, sub2, sub1)
+        result = testdir.runpytest("-v", "-s", sub1, sub2, sub1)
         result.assert_outcomes(passed=3)
 
     def test_generate_same_function_names_issue403(self, testdir):