add test__subprocess.py

greentest/test__subprocess.py

+import sys
+import os
+import greentest
+import time
+from gevent import subprocess, sleep
+
+
+class Test(greentest.TestCase):
+
+    def test_exit(self):
+        popen = subprocess.Popen([sys.executable, '-c', 'import sys; sys.exit(10)'])
+        self.assertEqual(popen.wait(), 10)
+
+    def test_child_exception(self):
+        try:
+            subprocess.Popen(['*']).wait()
+        except OSError, ex:
+            assert ex.errno == 2, ex
+        else:
+            raise AssertionError('Expected OSError: [Errno 2] No such file or directory')
+
+    if os.path.exists('/proc'):
+        def test_leak(self):
+            fd_directory = '/proc/%d/fd' % os.getpid()
+            num_before = len(os.listdir(fd_directory))
+            p = subprocess.Popen([sys.executable, "-c", "print()"],
+                                 stdout=subprocess.PIPE)
+            p.wait()
+            del p
+            num_after = len(os.listdir(fd_directory))
+            self.assertEqual(num_before, num_after)
+
+    def test_communicate(self):
+        p = subprocess.Popen([sys.executable, "-c",
+                          'import sys,os;'
+                          'sys.stderr.write("pineapple");'
+                          'sys.stdout.write(sys.stdin.read())'],
+                         stdin=subprocess.PIPE,
+                         stdout=subprocess.PIPE,
+                         stderr=subprocess.PIPE)
+        (stdout, stderr) = p.communicate("banana")
+        self.assertEqual(stdout, "banana")
+        self.assertEqual(stderr, "pineapple")
+
+
+if __name__ == '__main__':
+    greentest.main()