Fix(subproc.py): Test bogus subprocess at the beginning

[bookmarks_db.git] / subproc.py

diff --git a/subproc.py b/subproc.py
index 0280aad6c9fcc10fa0d87c562f44fb6b08eacf3a..d16ecc6064de3dbb28b610e51d6e14816c57767a 100644 (file)
--- a/subproc.py
+++ b/subproc.py
@@ -40,13 +40,18 @@ __version__ = "Revision: 1.15 "
 #
 # ken.manheimer@nist.gov
 
+# This is a modified version by Oleg Broytman <phd@phdru.name>.
+# The original version is still preserved at
+# https://www.python.org/ftp/python/contrib-09-Dec-1999/System/subproc.tar.gz
 
 import sys, os, string, time, types
 import select
 import signal
 
 
-SubprocessError = 'SubprocessError'
+class SubprocessError(Exception):
+    pass
+
 # You may need to increase execvp_grace_seconds, if you have a large or slow
 # path to search:
 execvp_grace_seconds = 0.5
@@ -643,15 +648,15 @@ class Ph:
 #############################################################################
 
 def test(p=0):
-    print("\tOpening subprocess:")
-    p = Subprocess('cat', 1)            # set to expire noisily...
-    print(p)
     print("\tOpening bogus subprocess, should fail:")
     try:
         b = Subprocess('/', 1)
         print("\tOops!  Null-named subprocess startup *succeeded*?!?")
     except SubprocessError:
         print("\t...yep, it failed.")
+    print("\tOpening cat subprocess:")
+    p = Subprocess('cat', 1)            # set to expire noisily...
+    print(p)
     print('\tWrite, then read, two newline-teriminated lines, using readline:')
     p.write('first full line written\n'); p.write('second.\n')
     print(repr(p.readline()))