provide testdir.spawn_pytest for pexpect mediated interaction tests,

kill code, yay.

--HG--
branch : trunk

py/test/plugin/pytest_pytester.py

@@ -254,10 +254,14 @@ class TmpTestdir:
         return RunResult(ret, out, err)
 
     def runpybin(self, scriptname, *args):
+        fullargs = self._getpybinargs(scriptname) + args
+        return self.run(*fullargs)
+
+    def _getpybinargs(self, scriptname):
         bindir = py.path.local(py.__file__).dirpath("bin")
         script = bindir.join(scriptname)
         assert script.check()
-        return self.run(py.std.sys.executable, script, *args)
+        return py.std.sys.executable, script
 
     def runpytest(self, *args):
         p = py.path.local.make_numbered_dir(prefix="runpytest-", 
@@ -265,6 +269,15 @@ class TmpTestdir:
         args = ('--basetemp=%s' % p, ) + args 
         return self.runpybin("py.test", *args)
 
+    def spawn_pytest(self, string, expect_timeout=10.0):
+        pexpect = py.test.importorskip("pexpect", "2.3")
+        basetemp = self.tmpdir.mkdir("pexpect")
+        invoke = "%s %s" % self._getpybinargs("py.test")
+        cmd = "%s --basetemp=%s %s" % (invoke, basetemp, string)
+        child = pexpect.spawn(cmd, logfile=basetemp.join("spawn.out").open("w"))
+        child.timeout = expect_timeout
+        return child
+
 class Event:
     def __init__(self, name, args, kwargs):
         self.name = name

py/test/testing/acceptance_test.py

@@ -1,7 +1,5 @@
 import py
 
-pydir = py.path.local(py.__file__).dirpath()
-pytestpath = pydir.join("bin", "py.test")
 EXPECTTIMEOUT=10.0
 
 class TestGeneralUsage:
@@ -445,30 +443,13 @@ class TestDistribution:
 
 
 class TestInteractive:
-    def getspawn(self, tmpdir):
-        pexpect = py.test.importorskip("pexpect")
-        basetemp = tmpdir.mkdir("basetemp")
-        def spawn(cmd):
-            cmd = cmd + " --basetemp=" + str(basetemp)
-            return pexpect.spawn(cmd, logfile=tmpdir.join("spawn.out").open("w"))
-        return spawn
-
-    def requirespexpect(self, version_needed):
-        pexpect = py.test.importorskip("pexpect")
-        ver = tuple(map(int, pexpect.__version__.split(".")))
-        if ver < version_needed:
-            py.test.skip("pexpect version %s needed" %(".".join(map(str, version_needed))))
-       
     def test_pdb_interaction(self, testdir):
-        self.requirespexpect((2,3))
-        spawn = self.getspawn(testdir.tmpdir)
         p1 = testdir.makepyfile("""
             def test_1():
                 i = 0
                 assert i == 1
         """)
-        child = spawn("%s %s --pdb %s" % (py.std.sys.executable, pytestpath, p1))
-        child.timeout = EXPECTTIMEOUT
+        child = testdir.spawn_pytest("--pdb %s" % p1)
         #child.expect(".*def test_1.*")
         child.expect(".*i = 0.*")
         child.expect("(Pdb)")
@@ -478,14 +459,12 @@ class TestInteractive:
             child.wait()
 
     def test_simple_looponfail_interaction(self, testdir):
-        spawn = self.getspawn(testdir.tmpdir)
         p1 = testdir.makepyfile("""
             def test_1():
                 assert 1 == 0 
         """)
         p1.setmtime(p1.mtime() - 50.0)  
-        child = spawn("%s %s --looponfail %s" % (py.std.sys.executable, pytestpath, p1))
-        child.timeout = EXPECTTIMEOUT
+        child = testdir.spawn_pytest("--looponfail %s" % p1)
         child.expect("assert 1 == 0")
         child.expect("test_simple_looponfail_interaction.py:")
         child.expect("1 failed")