Skip CLOCK_UPTIME_RAW_APPROX since it seems less precise than advertised on macOS

* See https://travis-ci.org/ruby/ruby/jobs/525595997

1 files changed, 7 insertions, 0 deletions

diff --git a/spec/ruby/core/process/fixtures/clocks.rb b/spec/ruby/core/process/fixtures/clocks.rb
index e3f531944d..c04ae7785f 100644
--- a/spec/ruby/core/process/fixtures/clocks.rb
+++ b/spec/ruby/core/process/fixtures/clocks.rb
@@ -26,6 +26,13 @@ module ProcessSpecs
       }
     end
 
+    # These clocks in practice on macOS seem to be less precise than advertised by clock_getres
+    platform_is :darwin do
+      clocks = clocks.reject { |clock, value|
+        [:CLOCK_UPTIME_RAW_APPROX].include?(clock)
+      }
+    end
+
     # These clocks in practice on ARM on Linux do not seem to match their reported resolution.
     platform_is :armv7l, :aarch64 do
       clocks = clocks.reject { |clock, value|