A simple test follows:

${message}

Now perform scalar boolean tests:

boolean1 succeeded: ${boolean1}
boolean1 failed: ${boolean1}

boolean2 succeeded: ${boolean2}
boolean2 failed: ${boolean2}

boolean3 succeeded: ${boolean3}
boolean3 failed: ${boolean3}

boolean4 succeeded: ${boolean4}
boolean4 failed: ${boolean4}

boolean5 succeeded: ${boolean5}
boolean5 failed: ${boolean5}

Now test list models:

list1 succeeded: ${list1[3]}
list1 failed: ${list1[3]}

list2 succeeded.
list2 failed.

Test hash models:

hash1 succeeded: ${hash1.temp}
hash1 failed: ${hash1.temp}

hash2 succeeded.
hash2 failed.

Test not operator:

Not boolean1 succeeded Not boolean1 failed

Not boolean1 succeeded Not boolean1 failed

Not boolean2 succeeded Not boolean2 failed

Not boolean2 succeeded Not boolean2 failed

Message is "Hello, world!" Message is something else (${message})

Message is not "Hello, world!" -- it's ${message} Message is "Hello, world!"