extfs: uarc: add tests.

tests/src/vfs/extfs/helpers-list/Makefile.am

@@ -47,6 +47,9 @@ data_files_to_distribute = \
 	data/uace.README \
 	data/uace.input \
 	data/uace.output \
+	data/uarc.README \
+	data/uarc.input \
+	data/uarc.output \
 	data/urar.README \
 	data/urar.v4,v3.env_vars \
 	data/urar.v4,v3.input \

tests/src/vfs/extfs/helpers-list/data/uarc.README

@@ -0,0 +1,19 @@
+
+The input file was created by doing "arc v test.arc" on archive created
+with "arc a test.arc ...". We then made sure to have:
+
+- One date prior to year 2000 (to test the 1900/2000 boundary).
+- Both AM and PM times.
+
+Our 'uarc' doesn't support spaces in filenames but that's no biggie:
+
+    Man page: "Full compatibility with PC ARC files is maintained, the
+    price for which is that arc doesn't like long filenames, and can only
+    archive files with names of up to 12 characters. [...] I suggest you
+    put long-winded filenames in a 'shar' before arcing them."
+
+    Wikipedia: "ARC is incapable of compressing entire directory trees"
+
+Known issues with our uarc:
+
+- It reports '0' gid.

tests/src/vfs/extfs/helpers-list/data/uarc.input

@@ -0,0 +1,7 @@
+Name          Length    Stowage    SF   Size now  Date       Time    CRC
+============  ========  ========  ====  ========  =========  ======  ====
+README.html       9799  Crunched   50%      4922  23 Nov 16  11:48a  40ba
+extfs.c          49679  Crunched   67%     16874  18 Apr 94   3:05p  38ff
+run.log           1051  Crunched   50%       536  23 Nov 16  10:36a  6184
+        ====  ========            ====  ========
+Total      3     60529             64%     22332

tests/src/vfs/extfs/helpers-list/data/uarc.output

@@ -0,0 +1,3 @@
+-rw-r--r--   1  <<uid>>        0       9799 2016-11-23 11:48:00 README.html
+-rw-r--r--   1  <<uid>>        0      49679 1994-04-18 15:05:00 extfs.c
+-rw-r--r--   1  <<uid>>        0       1051 2016-11-23 10:36:00 run.log