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diff --git a/test/utahrle-roundtrip.test b/test/utahrle-roundtrip.test
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+++ b/test/utahrle-roundtrip.test
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+#! /bin/bash
+# This script tests: pnmtorle rletopnm
+# Also requires: pamchannel pamtopnm
+
+
+#Test 1.  Should produce 1571496937 33838, cksum of testimg.red
+pamchannel -infile=testimg.ppm -tupletype="GRAYSCALE" 0 | pamtopnm | \
+  pnmtorle | rletopnm | cksum
+
+#Test 2.  Should print 1926073387 101484, cksum of testimg.ppm
+pnmtorle testimg.ppm | \
+  rletopnm | cksum