Make chgrp and chown tests work on Android.

There's no /etc/passwd and /etc/group, but there are enough users and
groups that we can test with. ("bin" and "daemon" were added for LTP;
"shell" is what you get with `adb shell`.)

2 files changed, 18 insertions, 9 deletions

diff --git a/tests/chgrp.test b/tests/chgrp.test
index 65820361..5c7e4258 100755
--- a/tests/chgrp.test
+++ b/tests/chgrp.test
@@ -9,9 +9,13 @@ then
   exit
 fi
 
-# We chgrp between "root" and the last group in /etc/group.
-
-GRP="$(sed -n '$s/:.*//p' /etc/group)"
+if [ -f /etc/group ]; then
+  # We chgrp between "root" and the last group in /etc/group.
+  GRP="$(sed -n '$s/:.*//p' /etc/group)"
+else
+  # Or assume we're on Android and pick a well-known group.
+  GRP=shell
+fi
 
 # Set up a little testing hierarchy
 
diff --git a/tests/chown.test b/tests/chown.test
index 56eed81e..20be541a 100755
--- a/tests/chown.test
+++ b/tests/chown.test
@@ -9,11 +9,16 @@ then
   exit
 fi
 
-# We chown between user "root" and the last user in /etc/passwd,
-# and group "root" and the last group in /etc/group.
-
-USR="$(sed -n '$s/:.*//p' /etc/passwd)"
-GRP="$(sed -n '$s/:.*//p' /etc/group)"
+if [ -f /etc/group ]; then
+  # We chown between user "root" and the last user in /etc/passwd,
+  # and group "root" and the last group in /etc/group.
+  USR="$(sed -n '$s/:.*//p' /etc/passwd)"
+  GRP="$(sed -n '$s/:.*//p' /etc/group)"
+else
+  # Or we assume we're on Android...
+  USR="shell"
+  GRP="daemon"
+fi
 
 # Set up a little testing hierarchy
 
@@ -24,7 +29,7 @@ F=testdir/file
 
 # Wrapper to reset groups and return results
 
-OUT="&& echo \$(ls -l testdir/file | awk '{print \$3,\$4}')"
+OUT="&& stat --format '%U %G' $F"
 
 #testing "name" "command" "result" "infile" "stdin"