Add test script.

tests/bugfixes/github/test_issue_1504.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+
+import system_tests
+class issue_1504_metacopy(metaclass=system_tests.CaseMeta):
+    url = "https://github.com/Exiv2/exiv2/pull/1504"
+    commands = ["$metacopy"
+               ,"$metacopy -h"
+               ]
+    retval = [ 1,2] 
+    stderr = [ """metacopy: Read and write files must be specified
+""",""]
+    stdout = ["""
+Reads and writes raw metadata. Use -h option for help.
+Usage: metacopy [-iecaph] readfile writefile
+""","""
+Reads and writes raw metadata. Use -h option for help.
+Usage: metacopy [-iecaph] readfile writefile
+
+Options:
+   -i      Read Iptc data from readfile and write to writefile.
+   -e      Read Exif data from readfile and write to writefile.
+   -c      Read Jpeg comment from readfile and write to writefile.
+   -x      Read XMP data from readfile and write to writefile.
+   -a      Read all metadata from readfile and write to writefile.
+   -p      Preserve existing metadata in writefile if not replaced.
+   -h      Display this help and exit.
+
+"""]