Move Prometheus presentation logic to PrometheusText

+ Use NullMetrics to mock metrics when unused
+ Use method_missing in NullMetrics mocking
+ Update prometheus gem to version that correctly uses transitive dependencies
+ Ensure correct folders are used in Multiprocess prometheus client tests.
+ rename Sessions controller's metric

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/controllers/metrics_controller_spec.rb b/spec/controllers/metrics_controller_spec.rb
index cd31f750ffd..7baf7d1bef9 100644
--- a/spec/controllers/metrics_controller_spec.rb
+++ b/spec/controllers/metrics_controller_spec.rb
@@ -6,10 +6,10 @@ describe MetricsController do
   let(:token) { current_application_settings.health_check_access_token }
   let(:json_response) { JSON.parse(response.body) }
 
-  around do |examples|
+  around do |example|
     Dir.mktmpdir do |tmp_dir|
       @metrics_multiproc_dir = tmp_dir
-      examples.run
+      example.run
     end
   end