1 files changed, 38 insertions, 1 deletions
diff --git a/test/ppmwheel.test b/test/ppmwheel.test
index f528e209..c6583f97 100755
--- a/test/ppmwheel.test
+++ b/test/ppmwheel.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: ppmwheel
 # Also requires:
 
@@ -6,6 +6,8 @@
 # For values 6 and above, x86(-32) and x86-64 produce different output.
 # SSE floating-point math is the probable cause.
 
+echo "Test 1."
+
 for i in 4 5
 do
 ppmwheel $i | cksum
@@ -108,3 +110,38 @@ done
 #  98:  4086203619 28825    1961862620 28825
 #  99:  3656777902 29416    2475351252 29416
 # 100:  2246720411 30015    4055518595 30015
+
+echo "Test Invalid."
+
+tmpdir=${tmpdir:-/tmp}
+test_out=${tmpdir}/test_out
+
+echo 1>&2
+echo "Invalid command-line argument combinations." 1>&2
+echo "Error messages should appear below the line." 1>&2
+echo "-----------------------------------------------------------" 1>&2
+
+ppmwheel 10 -huevalue -huesaturation > ${test_out} || \
+  printf "Expected failure 1"
+  test -s ${test_out}; echo " "$?
+  rm -f ${test_out}
+
+ppmwheel 0 > ${test_out} || \
+  printf "Expected failure 2"
+  test -s ${test_out}; echo " "$?
+  rm -f ${test_out}
+
+ppmwheel 3 > ${test_out} || \
+  printf "Expected failure 3"
+  test -s ${test_out}; echo " "$?
+  rm -f ${test_out}
+
+ppmwheel > ${test_out} || \
+  printf "Expected failure 4"
+  test -s ${test_out}; echo " "$?
+  rm -f ${test_out}
+
+ppmwheel 10 10 > ${test_out} || \
+  printf "Expected failure 5"
+  test -s ${test_out}; echo " "$?
+  rm -f ${test_out}