(define-module (tests utils)
#:use-module (srfi srfi-64)
- #:export (test-exit))
+ #:export (test-exit
+
+ speak get-spoken with-fresh-speaker))
(define (test-exit)
(exit (= (test-runner-fail-count (test-runner-current)) 0)))
+
+
+\f
+
+;;; display-like helpers
+;;; ====================
+
+(define (speak-it)
+ (let ((messages '()))
+ (lambda* (#:optional message)
+ (if message (set! messages (append messages (list message))))
+ messages)))
+
+(define %speaker (make-parameter (speak-it)))
+
+(define (speak message)
+ "Speak a message into the %speaker parameter"
+ ((%speaker) message))
+
+(define (get-spoken)
+ "Get what's been spoken in the %speaker parameter"
+ ((%speaker)))
+
+(define-syntax-rule (with-fresh-speaker body ...)
+ "Run body with a fresh %speaker"
+ (parameterize ((%speaker (speak-it)))
+ body ...))