Add additional tasks

Author: sue445

_gem/README.md

@@ -69,6 +69,26 @@ Following tasks are generated
 * `rake go5:testrace`
 * `rake go5:fmt`
 
+#### Example (Add additional tasks)
+```ruby
+# Rakefile
+require "go_gem/rake_task"
+
+go_task = GoGem::RakeTask.new("gem_name")
+
+namespace :go do
+  desc "Run golangci-lint"
+  task :lint do
+    go_task.within_target_dir do
+      sh "which golangci-lint" do |ok, _|
+        raise "golangci-lint isn't installed. See. https://golangci-lint.run/welcome/install/" unless ok
+      end
+      sh GoGem::RakeTask.build_env_vars, "golangci-lint run"
+    end
+  end
+end
+```
+
 #### Available configurations
 * `task_namespace` : task namespace (default: `:go`)
 * `go_bin_path` : path to go binary (default: `"go"`)

_gem/lib/go_gem/rake_task.rb

@@ -22,6 +22,24 @@ module GoGem
   #     t.go_test_args = "-mod=readonly"
   #     t.target_dir = "/dir/to/go-mod/"
   #   end
+  #
+  # @example additional tasks
+  #   # Rakefile
+  #   require "go_gem/rake_task"
+  #
+  #   t = GoGem::RakeTask.new("gem_name")
+  #
+  #   namespace :go do
+  #     desc "Run golangci-lint"
+  #     task :lint do
+  #       t.within_target_dir do
+  #         sh "which golangci-lint" do |ok, _|
+  #           raise "golangci-lint isn't installed. See. https://golangci-lint.run/welcome/install/" unless ok
+  #         end
+  #         sh GoGem::RakeTask.build_env_vars, "golangci-lint run"
+  #       end
+  #     end
+  #   end
   class RakeTask < ::Rake::TaskLib
     DEFAULT_TASK_NAMESPACE = :go
 
@@ -110,6 +128,18 @@ def self.build_env_vars
       }
     end
 
+    # @yield
+    def within_target_dir
+      Dir.chdir(target_dir) do # rubocop:disable Style/ExplicitBlockArgument
+        yield
+      end
+    end
+
+    # @return [String]
+    def ext_dir
+      File.join("ext", gem_name)
+    end
+
     private
 
     def define_go_test_task
@@ -138,17 +168,5 @@ def define_go_fmt_task
         end
       end
     end
-
-    # @yield
-    def within_target_dir
-      Dir.chdir(target_dir) do # rubocop:disable Style/ExplicitBlockArgument
-        yield
-      end
-    end
-
-    # @return [String]
-    def ext_dir
-      File.join("ext", gem_name)
-    end
   end
 end

_gem/spec/go_gem/rake_task_spec.rb

@@ -17,6 +17,26 @@
       it { should be_task_defined("go:test") }
       it { should be_task_defined("go:testrace") }
       it { should be_task_defined("go:fmt") }
+
+      describe "Add additional tasks" do
+        include Rake::DSL
+
+        subject do
+          t = GoGem::RakeTask.new(gem_name)
+
+          namespace :go do
+            task :test2 do
+              t.within_target_dir do
+                sh "go test"
+              end
+            end
+          end
+
+          Rake::Task
+        end
+
+        it { should be_task_defined("go:test2") }
+      end
     end
 
     context "with params" do

_tasks/go.rake

@@ -1,17 +1,19 @@
 # frozen_string_literal: true
 
-GoGem::RakeTask.new("") do |t|
+go_task = GoGem::RakeTask.new("") do |t|
   t.target_dir = repo_root
   t.go_test_args = "#{GoGem::RakeTask::DEFAULT_GO_TEST_ARGS} #{ENV["GO_TEST_ARGS"]}"
 end
 
 namespace :go do
   desc "Run golangci-lint"
   task :lint do
-    sh "which golangci-lint" do |ok, _|
-      raise "golangci-lint isn't installed. See. https://golangci-lint.run/welcome/install/" unless ok
+    go_task.within_target_dir do
+      sh "which golangci-lint" do |ok, _|
+        raise "golangci-lint isn't installed. See. https://golangci-lint.run/welcome/install/" unless ok
+      end
+      sh GoGem::RakeTask.build_env_vars, "golangci-lint run"
     end
-    sh GoGem::RakeTask.build_env_vars, "golangci-lint run"
   end
 
   desc "Run all build tasks in go"