Add a SetHeader response mutator

Author: azimux

CHANGELOG.md

@@ -1,3 +1,8 @@
+## [0.0.19] - 2025-03-31
+
+- Add SetHeader response mutator
+- Use / instead of :: for paths
+
 ## [0.0.18] - 2025-03-29
 
 - Implement SetInputsFromHeader request mutator and MoveAttributeToHeader response mutator

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    foobara-http-command-connector (0.0.18)
+    foobara-http-command-connector (0.0.19)
       foobara (~> 0.0.88)
 
 GEM

spec/foobara/command_connectors_http/set_header_spec.rb

@@ -0,0 +1,34 @@
+RSpec.describe Foobara::CommandConnectors::Http::SetHeader do
+  let(:command_class) do
+    stub_class(:SomeCommand, Foobara::Command) do
+      result foo: :string, bar: :string
+
+      def execute
+        { foo: "foo value", bar: "bar value" }
+      end
+    end
+  end
+
+  let(:response_mutator) do
+    described_class.for(:baz_header, "bazvalue")
+  end
+
+  let(:command_connector) { Foobara::CommandConnectors::Http.new }
+  let(:response) { command_connector.run(path: "/run/#{command_class.full_command_name}") }
+
+  before do
+    command_connector.connect(command_class, response_mutators: response_mutator)
+  end
+
+  it "moves the attribute to a header" do
+    expect(response.status).to eq(200)
+
+    expect(JSON.parse(response.body)).to eq("foo" => "foo value", "bar" => "bar value")
+    expect(response.headers["baz_header"]).to eq("bazvalue")
+  end
+
+  it "does not change the result type" do
+    result_type = command_class.result_type
+    expect(response_mutator.instance.result_type_from(result_type)).to be(result_type)
+  end
+end

src/http/response_mutators/set_header.rb

@@ -0,0 +1,38 @@
+module Foobara
+  module CommandConnectors
+    class Http < CommandConnector
+      class SetHeader < ResponseMutator
+        class << self
+          attr_accessor :header_name, :header_value
+
+          def for(header_name, header_value)
+            subclass = Class.new(self)
+
+            subclass.header_name = header_name
+            subclass.header_value = header_value
+
+            subclass
+          end
+        end
+
+        attr_writer :header_name, :header_value
+
+        def result_type_from(result_type)
+          result_type
+        end
+
+        def mutate(response)
+          response.add_header(header_name.to_s, header_value)
+        end
+
+        def header_name
+          @header_name ||= self.class.header_name
+        end
+
+        def header_value
+          @header_value ||= self.class.header_value
+        end
+      end
+    end
+  end
+end

version.rb

@@ -1,6 +1,6 @@
 module Foobara
   module HttpCommandConnector
-    VERSION = "0.0.18".freeze
+    VERSION = "0.0.19".freeze
 
     local_ruby_version = File.read("#{__dir__}/.ruby-version").chomp
     local_ruby_version_minor = local_ruby_version[/\A(\d+\.\d+)\.\d+\z/, 1]