[tests/selinux] pr775-checkpolicy-revdeps: fix hidden failure in check_contexts

[Jan Zarsky <jzarsky@redhat.com>]

            A new commit has been pushed.

            Repo   : tests/selinux
            Branch : pr775-checkpolicy-revdeps
            Commit : 4d8e2de3cda97685e0188b6ee9c93a8c2f139748
            Author : Jan Zarsky <jzarsky@redhat.com>
            Date   : 2018-10-15T10:46:49+02:00
            Stats  : +7/-4 in 1 file(s)
            URL    : https://src.fedoraproject.org/tests/selinux/c/4d8e2de3cda97685e0188b6ee9c93a8c2f139748?branch=pr775-checkpolicy-revdeps

            Log:
            fix hidden failure in check_contexts

check_contexts was checking contexts in a loop and there was no warning
when there were no files to check (because of invalid parameter). Fix
this by counting the files to be checked.

Fix also one invalid call to check_contexts.

---
diff --git a/policycoreutils/restorecon/runtest.sh b/policycoreutils/restorecon/runtest.sh
index b16d4c0..aa7570c 100755
--- a/policycoreutils/restorecon/runtest.sh
+++ b/policycoreutils/restorecon/runtest.sh
@@ -111,10 +111,13 @@ rlJournalStart
 
         # Check that files matching with $2 in dir $1 have context $3
         function check_contexts {
-            COMMAND="find $1 -name '$2'"
-            for ITEM in `eval $COMMAND`; do
-                rlRun "ls -ladZ $ITEM | grep :$3";
+            rlRun "find $1 -name '$2' >files"
+            rlRun "[ $(cat files | wc -l) -gt 0 ]"
+
+            for f in $files; do
+                rlRun "ls -ladZ $f | grep :$3"
             done
+            rlRun "rm files"
         }
 
         # Create the testing dirs and files
@@ -184,7 +187,7 @@ EOF"
         check_initial_contexts 'incorrect1.dir'
         check_initial_contexts 'correct.dir'
         check_initial_contexts 'customizable.dir'
-        check_contexts 'incorrect2' '*' 'correct_t'
+        check_contexts 'incorrect2.dir' '*' 'correct_t'
         rlRun "ls -ladZ customizable.file | grep customizable_t"
         rlRun "ls -ladZ incorrect.file | grep :correct_t"