Test: Add fileformats and I/O.

Add the fileformats and I/O suites. Move some more common code to
subprocesstest.py and add a diffOutput method.

Change-Id: I2ec34e46539022bdce78520645fdca6dfc1a8c1a
Reviewed-on: https://code.wireshark.org/review/27183
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot
Reviewed-by: Gerald Combs <gerald@wireshark.org>

1 files changed, 44 insertions, 0 deletions

diff --git a/test/util_dump_dhcp_pcap.py b/test/util_dump_dhcp_pcap.py
new file mode 100755
index 0000000000..2fbd7fa138
--- /dev/null
+++ b/test/util_dump_dhcp_pcap.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+#
+# Wireshark tests
+# By Gerald Combs <gerald@wireshark.org>
+#
+# Ported from a set of Bash scripts which were copyright 2005 Ulf Lamping
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+'''Write captures/dhcp.pcap to stdout, optionally writing only packet records or writing them slowly.'''
+
+import argparse
+import os
+import os.path
+import time
+import sys
+
+def main():
+    parser = argparse.ArgumentParser(description='Dump dhcp.pcap')
+    parser.add_argument('dump_type', choices=['cat', 'slow', 'raw'],
+        help='cat: Just dump the file. slow: Dump the file, pause, and dump its packet records. raw: Dump only the packet records.')
+    args = parser.parse_args()
+
+    if sys.version_info[0] < 3 and sys.platform == "win32":
+        import msvcrt
+        msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
+
+    dhcp_pcap = os.path.join(os.path.dirname(__file__), 'captures', 'dhcp.pcap')
+
+    dhcp_fd = open(dhcp_pcap, 'rb')
+    contents = dhcp_fd.read()
+    if args.dump_type != 'raw':
+        os.write(1, contents)
+    if args.dump_type == 'cat':
+        sys.exit(0)
+    if args.dump_type == 'slow':
+        time.sleep(1.5)
+    # slow, raw
+    os.write(1, contents[24:])
+    sys.exit(0)
+
+if __name__ == '__main__':
+    main()
+