Allow to use configurable logger to render wtf message

lib/trailblazer/developer.rb

@@ -1,8 +1,18 @@
 require "trailblazer/developer/version"
+require "logger"
 
 module Trailblazer
   module Developer
     # Your code goes here...
+    class << self
+      attr_writer :logger
+
+      def logger
+        @logger ||= Logger.new($stdout, formatter: proc { |*, msg| "#{msg}\n" }).tap do |log|
+          log.progname = self.name
+        end
+      end
+    end
   end
 end
 

lib/trailblazer/developer/wtf.rb

@@ -60,7 +60,7 @@ def invoke(activity, (ctx, flow_options), present_options: {}, **circuit_options
         &local_present_options_block
       )
 
-      puts output
+      Trailblazer::Developer.logger.debug(output)
 
       raise raise_exception if raise_exception
       return signal, [ctx, flow_options], circuit_options, output, returned_args

test/docs/developer_test.rb

@@ -71,7 +71,7 @@ class Create < Trailblazer::Operation
 
 
   it "#wtf?" do
-    output, _ = capture_io do
+    output, _ = capture_subprocess_io do
       result = Memo::Operation::Create.wtf?(seq: [], params: {})
     end
 
@@ -95,7 +95,7 @@ class Create < Trailblazer::Operation
 =end
 
   #@ exception
-    output, _ = capture_io do
+    output, _ = capture_subprocess_io do
       assert_raises ArgumentError do
         result = Memo::Operation::Create.wtf?(seq: [], raise_exception: true)
       end
@@ -138,7 +138,7 @@ class Create < Trailblazer::Activity::Railway # Note that this is not an {Operat
   end
 
   it "{#wtf?} with {Activity}" do
-    output, _ = capture_io do
+    output, _ = capture_subprocess_io do
       result = Trailblazer::Developer.wtf?(B::Memo::Operation::Create, [{seq: [], params: {}}, {}])
     end
 

test/trace/wtf_test.rb

@@ -42,7 +42,7 @@ def <<(value)
     exception = nil
     returned_args = nil
 
-    output, _ = capture_io do
+    output, _ = capture_subprocess_io do
       exception = assert_raises RuntimeError do
         returned_args = Trailblazer::Developer.wtf?(alpha, [{ seq: Raiser.new(raise_in: :c) }])
       end
@@ -66,7 +66,7 @@ def <<(value)
   it "traces until charlie, 3-level and step takes left track" do
     returned_args = nil
 
-    output, _ = capture_io do
+    output, _ = capture_subprocess_io do
       returned_args = Trailblazer::Developer.wtf?(alpha, [{ seq: [], c: false }])
     end
 
@@ -96,7 +96,7 @@ def <<(value)
   end
 
   it "traces alpha and it's subprocesses, for successful execution" do
-    output, _ = capture_io do
+    output, _ = capture_subprocess_io do
       Trailblazer::Developer.wtf?(alpha, [{ seq: [] }])
     end
 
@@ -125,7 +125,7 @@ def <<(value)
 
     signal, ctx, flow_options, circuit_options, output, returned_present_args = nil
 
-    captured_output, _ = capture_io do
+    captured_output, _ = capture_subprocess_io do
       signal, (ctx, flow_options), circuit_options, output, returned_present_args = Trailblazer::Developer.wtf?(alpha, [{seq: []}],
         present_options: {render_method: my_renderer})
     end
@@ -153,7 +153,7 @@ class PresentCreate < Trailblazer::Activity::Railway
   end
 
   it "overrides default color map of entities" do
-    output, _ = capture_io do
+    output, _ = capture_subprocess_io do
       Trailblazer::Developer.wtf?(
         alpha,
         [