1 files changed, 25 insertions(+), 0 deletions(-)

M test/suite0007.janet

@@ 333,4 333,29 @@
 
 (assert (pos? (length (gensym))) "gensym not empty, regression #753")
 
+
+# os/clock
+
+(defmacro measure-time [clocks & body]
+  (def t1 (gensym))
+  (def t2 (gensym))
+  ~(do
+    (def ,t1 (map |(os/clock $) ,clocks))
+    ,;body
+    (def ,t2 (map |(os/clock $) ,clocks))
+    (zipcoll ,clocks [ (- (,t2 0) (,t1 0)) (- (,t2 1) (,t1 1)) (- (,t2 2) (,t1 2))]))
+)
+
+# Spin for 0.1 seconds
+(def dt (measure-time [:realtime :monotonic :cputime]
+  (def t1 (os/clock :monotonic))
+  (while (< (- (os/clock :monotonic) t1) 0.1) true)))
+(assert (> (dt :monotonic) 0.10))
+(assert (> (dt :cputime) 0.05))
+
+# Sleep for 0.1 seconds
+(def dt (measure-time [:realtime :monotonic :cputime] (os/sleep 0.1)))
+(assert (> (dt :monotonic) 0.10))
+(assert (< (dt :cputime) 0.05))
+
 (end-suite)