Instrument private/protected methods

By default instrumentation will instrument public,
protected and private methods, because usually
heavy work is done on private method or at least
that’s what facts is showing

1 files changed, 54 insertions, 2 deletions

diff --git a/spec/lib/gitlab/metrics/instrumentation_spec.rb b/spec/lib/gitlab/metrics/instrumentation_spec.rb
index c6e979b69a4..cdf641341cb 100644
--- a/spec/lib/gitlab/metrics/instrumentation_spec.rb
+++ b/spec/lib/gitlab/metrics/instrumentation_spec.rb
@@ -9,9 +9,31 @@ describe Gitlab::Metrics::Instrumentation do
         text
       end
 
+      class << self
+        def buzz(text = 'buzz')
+          text
+        end
+        private :buzz
+
+        def flaky(text = 'flaky')
+          text
+        end
+        protected :flaky
+      end
+
       def bar(text = 'bar')
         text
       end
+
+      def wadus(text = 'wadus')
+        text
+      end
+      private :wadus
+
+      def chaf(text = 'chaf')
+        text
+      end
+      protected :chaf
     end
 
     allow(@dummy).to receive(:name).and_return('Dummy')
@@ -208,6 +230,21 @@ describe Gitlab::Metrics::Instrumentation do
       described_class.instrument_methods(@dummy)
 
       expect(described_class.instrumented?(@dummy.singleton_class)).to eq(true)
+      expect(@dummy.method(:foo).source_location.first).to match(/instrumentation\.rb/)
+    end
+
+    it 'instruments all protected class methods' do
+      described_class.instrument_methods(@dummy)
+
+      expect(described_class.instrumented?(@dummy.singleton_class)).to eq(true)
+      expect(@dummy.method(:flaky).source_location.first).to match(/instrumentation\.rb/)
+    end
+
+    it 'instruments all private instance methods' do
+      described_class.instrument_methods(@dummy)
+
+      expect(described_class.instrumented?(@dummy.singleton_class)).to eq(true)
+      expect(@dummy.method(:buzz).source_location.first).to match(/instrumentation\.rb/)
     end
 
     it 'only instruments methods directly defined in the module' do
@@ -241,6 +278,21 @@ describe Gitlab::Metrics::Instrumentation do
       described_class.instrument_instance_methods(@dummy)
 
       expect(described_class.instrumented?(@dummy)).to eq(true)
+      expect(@dummy.new.method(:bar).source_location.first).to match(/instrumentation\.rb/)
+    end
+
+    it 'instruments all protected instance methods' do
+      described_class.instrument_instance_methods(@dummy)
+
+      expect(described_class.instrumented?(@dummy)).to eq(true)
+      expect(@dummy.new.method(:chaf).source_location.first).to match(/instrumentation\.rb/)
+    end
+
+    it 'instruments all private instance methods' do
+      described_class.instrument_instance_methods(@dummy)
+
+      expect(described_class.instrumented?(@dummy)).to eq(true)
+      expect(@dummy.new.method(:wadus).source_location.first).to match(/instrumentation\.rb/)
     end
 
     it 'only instruments methods directly defined in the module' do
@@ -253,7 +305,7 @@ describe Gitlab::Metrics::Instrumentation do
 
       described_class.instrument_instance_methods(@dummy)
 
-      expect(@dummy.method_defined?(:_original_kittens)).to eq(false)
+      expect(@dummy.new.method(:kittens).source_location.first).not_to match(/instrumentation\.rb/)
     end
 
     it 'can take a block to determine if a method should be instrumented' do
@@ -261,7 +313,7 @@ describe Gitlab::Metrics::Instrumentation do
         false
       end
 
-      expect(@dummy.method_defined?(:_original_bar)).to eq(false)
+      expect(@dummy.new.method(:bar).source_location.first).not_to match(/instrumentation\.rb/)
     end
   end
 end