+(test (data-tors '(A . ((foo Int Bool)
+ (bar Bool))))
+ '((foo (A foo constructor)
+ abs Int (abs Bool A))
+ (foo~0 (A foo 0 Int) abs A Int)
+ (foo~1 (A foo 1 Bool) abs A Bool)
+ (bar (A bar constructor) abs Bool A)
+ (bar~0 (A bar 0 Bool) abs A Bool)))
+
+(test (data-tors-type-env
+ '(A . ((foo Int Bool)
+ (bar Bool))))
+ '((foo . (abs Int (abs Bool A)))
+ (foo~0 . (abs A Int))
+ (foo~1 . (abs A Bool))
+ (bar . (abs Bool A))
+ (bar~0 . (abs A Bool))))
+
+(test (expand-pattern-matches
+ '((data A (foo Int Int))
+ (let ([(foo x y) (foo 123 234)] [z (f 123)]) x)))
+ '((data A (foo Int Int))
+ (let ([x (foo~0 (foo 123 234))]
+ [y (foo~1 (foo 123 234))]
+ [z (f 123)])
+ x)))
+
+(test (singletons '((A [foo] [bar Int]) (B [baz Int] [qux])))
+ '(foo qux))
+
+(test (map (lambda (x) (data-sum-tag '((A [foo] [bar Int]) (B [baz Int] [qux])) x))
+ '(foo bar baz qux))
+ '(0 1 0 1))
+
+(test-exception
+ (expand-pattern-matches '((data A (foo Int Int))
+ (let ([(foo x) (foo 123 234)])
+ x))))
+
+(test-types (typecheck '((lambda (x) (+ ((lambda (y) (x y 3)) 5) 2))))
+ '(abs (abs Int (abs Int Int)) Int))