Fix old hash syntax

lib/coach/rspec.rb

@@ -17,7 +17,9 @@ def call
       config[:callback].call if config.include?(:callback)
       log_metadata(**{ name.to_sym => true })
 
-      response = [name + config.except(:callback).inspect.to_s]
+      # Emulate newer hash syntax for older Ruby versions
+      hash_response = config.except(:callback).map { |k, v| "#{k}: #{v}" }.join(", ")
+      response = [name + "{#{hash_response}}"]
 
       # Build up a list of middleware called, in the order they were called
       if next_middleware

spec/lib/coach/handler_spec.rb

@@ -32,7 +32,7 @@
         expect(a_double).to receive(:call)
         expect(b_double).to receive(:call)
         result = handler.call({})
-        expect(result).to eq(%w[A{} B{} Terminal{:handler=>true}])
+        expect(result).to eq(["A{}", "B{}", "Terminal{handler: true}"])
       end
 
       context "with an invalid chain" do
@@ -66,7 +66,7 @@
 
           result = handler.call({})
 
-          expect(result).to eq(%w[A{} B{} Terminal{:handler=>true}])
+          expect(result).to eq(["A{}", "B{}", "Terminal{handler: true}"])
         end
 
         context "with an invalid chain" do
@@ -215,7 +215,7 @@
 
     it "sets up the chain correctly, calling each item in the correct order" do
       expect(handler.build_request_chain(sequence, {}).call).
-        to eq(%w[A{} B{:b=>true} Terminal{}])
+        to eq(["A{}", "B{b: true}", "Terminal{}"])
     end
 
     context "with inheriting config" do
@@ -226,7 +226,7 @@
 
       it "calls lambda with parent middlewares config" do
         expect(handler.build_request_chain(sequence, {}).call).
-          to eq(%w[A{} C{:b=>true} D{} B{:b=>true} Terminal{}])
+          to eq(["A{}", "C{b: true}", "D{}", "B{b: true}", "Terminal{}"])
       end
     end
   end