Tests I

In Wall, tests can be colocated with code or in their own files. They exist in blocks that start with @begin-test and end with @end-test. The named values in these blocks are unavailable to the rest of the file.

// american-emotional-lexicon.wall

@begin-test "Americans are only ever happy"
american-happiness = amerian-emotional-lexicon 'happy
american-sadness = american-emotional-lexicon 'sad
expectEquals american-happiness american-sadness
@end-test

american-emotional-lexicon = map _ 'happy

In Wall, all tests execute at compile time using functional domain verification.

$ wall american-emotional-lexicon.wall
pass "Americans are only ever happy"