add test files

processor/baggage/lib/opentelemetry/processor/baggage/baggage_span_processor.rb

@@ -9,6 +9,12 @@
 module OpenTelemetry
   module Processor
     module Baggage
+      # Returns a text map propagator that propagates context in the XRay
+      # format.
+      def baggage_span_processor
+        BaggageSpanProcessor.new
+      end
+
       # The BaggageSpanProcessor reads key/values stored in Baggage in the
       # starting span's parent context and adds them as attributes to the span.
       #
@@ -41,6 +47,7 @@ module Baggage
       #     )
       #   end
       class BaggageSpanProcessor
+
         # Called when a {Span} is started, adds Baggage keys/values to the span as attributes.
         #
         # @param [Span] span the {Span} that just started, expected to conform

processor/baggage/test/opentelemtry/processor/baggage/baggage_test.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'test_helper'
+
+describe OpenTelemetry::Processor::Baggage do
+    describe '#baggage_processor' do
+        it 'returns an instance of BaggageProcessor' do
+            processor = OpenTelemetry::Processor::Baggage.baggage_span_processor
+            _(processor).must_be_instance_of(
+                OpenTelemetry::Processor::Baggage.BaggageSpanProcessor
+            )
+        end
+
+        # it 'adds baggage entries to the span' do
+        #     ctx = OpenTelemetry::Baggage.set_value('testing_baggage', 'it_worked')
+
+        #     processor = OpenTelemetry::Processor::Baggage.baggage_processor
+        #     span = OpenTelemetry::Trace::Span.new
+        #     processor.process(span, ctx)
+        # end
+    end
+end

processor/baggage/test/test_helper.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+# Copyright The OpenTelemetry Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require 'minitest/autorun'