test: Add comments to test case

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

script/tests/test_encryption.sh

@@ -638,20 +638,26 @@ testJWE() {
 
 	MSG=$($CTR container rm testcontainer1 2>&1)
 	MSG=$($CTR snapshot rm testcontainer1 2>&1)
+
+	# Create testcontainer1 from encrypted bash image ${BASH_ENC}
+	# Creating the container without providing (right) key must fail
 	MSG=$(sudo $CTR container create ${BASH_ENC} testcontainer1 2>&1)
 	if [ $? -eq 0 ]; then
 		MSG=$($CTR container rm testcontainer1 2>&1)
 		MSG=$($CTR snapshot rm testcontainer1 2>&1)
 		failExit 1 "Should not have been able to create a container from encrypted image without passing keys"
 	fi
 	MSG=$($CTR snapshot rm testcontainer1 2>&1)
+
+	# creating the container when providing right key must work
 	MSG=$(sudo bash -c "$CTR container create \
 		--key ${PRIVKEYJWK} \
 		${BASH_ENC} testcontainer1 2>&1")
 	failExit $? "Should have been able to create a container from encrypted image when passing keys\n${MSG}"
 	MSG=$($CTR container rm testcontainer1 2>&1)
 	MSG=$($CTR snapshot rm testcontainer1 2>&1)
 
+	# running the container without providing (right) key must fail
 	MSG=$(sudo bash -c "$CTR run \
 		--rm \
 		${BASH_ENC} testcontainer1 echo 'Hello world'" 2>&1)
@@ -660,6 +666,8 @@ testJWE() {
 		failExit 1 "Should not have been able to run a container from encrypted image without passing keys"
 	fi
 	MSG=$($CTR snapshot rm testcontainer1 2>&1)
+
+	# Running the container when providing right key must work
 	MSG=$(sudo bash -c "$CTR run \
 		--key ${PRIVKEYJWK} \
 		--rm \