Examples/test-suite/mzscheme/unions_runme.scm

;;; This is the union runtime testcase. It ensures that values within a
;;; union embedded within a struct can be set and read correctly.

(load-extension "unions.so")

;; Create new instances of SmallStruct and BigStruct for later use
(define small (new-SmallStruct))
(SmallStruct-jill-set small 200)

(define big (new-BigStruct))
(BigStruct-smallstruct-set big small)
(BigStruct-jack-set big 300)

;; Use SmallStruct then BigStruct to setup EmbeddedUnionTest.
;; Ensure values in EmbeddedUnionTest are set correctly for each.
(define eut (new-EmbeddedUnionTest))

;; First check the SmallStruct in EmbeddedUnionTest
(EmbeddedUnionTest-number-set eut 1)
(EmbeddedUnionTest-uni-small-set (EmbeddedUnionTest-uni-get eut)
				 small)
(let ((Jill1 (SmallStruct-jill-get
	      (EmbeddedUnionTest-uni-small-get
	       (EmbeddedUnionTest-uni-get eut)))))
  (if (not (= Jill1 200))
      (begin
	(display "Runtime test 1 failed.")
	(exit 1))))

(let ((Num1 (EmbeddedUnionTest-number-get eut)))
  (if (not (= Num1 1))
      (begin
	(display "Runtime test 2 failed.")
	(exit 1))))

;; that should do

(exit 0)