test/test_stackprof.rb in stackprof-0.2.18 vs test/test_stackprof.rb in stackprof-0.2.19

@@ -129,10 +129,11 @@
     before_monotonic = Process.clock_gettime(Process::CLOCK_MONOTONIC, :microsecond)
 
     profile = StackProf.run(mode: :custom, raw: true) do
       10.times do
         StackProf.sample
+        sleep 0.0001
       end
     end
 
     after_monotonic = Process.clock_gettime(Process::CLOCK_MONOTONIC, :microsecond)
 
@@ -151,9 +152,13 @@
     end
 
     assert_equal 10, profile[:raw_timestamp_deltas].size
     total_duration = after_monotonic - before_monotonic
     assert_operator profile[:raw_timestamp_deltas].inject(&:+), :<, total_duration
+
+    profile[:raw_timestamp_deltas].each do |delta|
+      assert_operator delta, :>, 0
+    end
   end
 
   def test_metadata
     metadata = {
       path: '/foo/bar',