Fix mutex specs race condition on mt (#8643)

crystal-lang · Jan 3, 2020 · 15bfc23 · 15bfc23
1 parent 090e697
commit 15bfc23
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/spec/std/mutex_spec.cr b/spec/std/mutex_spec.cr
@@ -46,13 +46,15 @@ describe Mutex do
 
     it "can't be unlocked by another fiber" do
       mutex = nil
+      done = false
 
       spawn do
         mutex = Mutex.new
         mutex.not_nil!.lock
+        done = true
       end
 
-      until mutex
+      until done
         Fiber.yield
       end
 
@@ -80,13 +82,15 @@ describe Mutex do
 
     it "can't be unlocked by another fiber" do
       mutex = nil
+      done = false
 
       spawn do
         mutex = Mutex.new(:reentrant)
         mutex.not_nil!.lock
+        done = true
       end
 
-      until mutex
+      until done
         Fiber.yield
       end