test.generative

• Type: Defect
• Status: Closed
• Priority: Major
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: None
• Component/s: None
• Labels:

  None

This is what I'm observing:

user=> (binding [gen/*seed* 7] (gen/uniform))
-6880819372607069048
user=> (binding [gen/*seed* 7] (gen/uniform))
5065957067589062886

This is what I'm expecting:

user=> (binding [gen/*seed* 7] (gen/uniform))
-4967725919621401576
user=> (binding [gen/*seed* 7] (gen/uniform))
-4967725919621401576

The work-around is to bind *rnd* to a new java.util.Random constructed appropriately:

(binding [gen/*rnd* (java.util.Random. 7)] (gen/uniform))

I'm not sure: Is this is a bug in the doc string of *seed*? Is the bug the very existence of *seed*? (*seed* is never used.) Should the doc-string for *rnd* suggest something like the code above as a way to get a consistent basis? Should generators provide a with-seed macro to do this for us?

• Assignee:

  Stuart Halloway

  Reporter:

  Ben Smith-Mannschott

• Created:

  13/Oct/12 7:45 AM

  Updated:

  03/Feb/13 7:13 AM

  Resolved:

  03/Feb/13 7:13 AM