diff --git a/spec/clim/dsl_spec/sub_command_1_1_spec.cr b/spec/clim/dsl_spec/sub_command_1_1_spec.cr
new file mode 100644
index 00000000..8c3dd034
--- /dev/null
+++ b/spec/clim/dsl_spec/sub_command_1_1_spec.cr
@@ -0,0 +1,172 @@
+require "../dsl_spec"
+
+{% begin %}
+{%
+  main_help_message = <<-HELP_MESSAGE
+
+                      Command Line Interface Tool.
+
+                      Usage:
+
+                        main_command_of_clim_library [options] [arguments]
+
+                      Options:
+
+                        --help                           Show this help.
+
+                      Sub Commands:
+
+                        sub_command   Sub command with desc.
+
+
+                    HELP_MESSAGE
+
+  sub_help_message = <<-HELP_MESSAGE
+
+                     Sub command with desc.
+
+                     Usage:
+
+                       sub_command with usage [options] [arguments]
+
+                     Options:
+
+                       -a ARG, --array=ARG              Option test. [type:Array(String)] [default:["default string"]]
+                       --help                           Show this help.
+                       -v, --version                    Show version.
+
+
+                   HELP_MESSAGE
+%}
+
+spec(
+  spec_class_name: SubCommandWithDescUsageVersionOption,
+  spec_sub_command_lines: [
+    <<-SUB_COMMAND,
+    sub_command "sub_command" do
+      desc "Sub command with desc."
+      usage "sub_command with usage [options] [arguments]"
+      version "version 1.0.0", short: "-v"
+      option "-a ARG", "--array=ARG", desc: "Option test.", type: Array(String), default: ["default string"]
+      run do |options, arguments|
+      end
+    end
+    SUB_COMMAND
+  ],
+  spec_desc: "option type spec,",
+  spec_cases: [
+    {
+      argv:        [] of String,
+      expect_help: {{main_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["arg1"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["arg1", "arg2"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["arg1", "arg2", "arg3"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:              ["-h"],
+      exception_message: "Undefined option. \"-h\"",
+    },
+    {
+      argv:              ["--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:        ["--help"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv:        ["--help", "ignore-arg"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv:        ["ignore-arg", "--help"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv:        ["sub_command"],
+      expect_help: {{sub_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["sub_command", "arg1"],
+      expect_help: {{sub_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["sub_command", "arg1", "arg2"],
+      expect_help: {{sub_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["sub_command", "arg1", "arg2", "arg3"],
+      expect_help: {{sub_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:           ["sub_command", "--version"],
+      expect_version: "version 1.0.0\n",
+    },
+    {
+      argv:           ["sub_command", "-v"],
+      expect_version: "version 1.0.0\n",
+    },
+    {
+      argv:              ["sub_command", "--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "--missing-option"],
+      exception_message: "Undefined option. \"--missing-option\"",
+    },
+    {
+      argv:              ["sub_command", "-m", "arg1"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "arg1", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "-m", "-d"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:        ["sub_command", "--help"],
+      expect_help: {{sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "--help", "ignore-arg"],
+      expect_help: {{sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "ignore-arg", "--help"],
+      expect_help: {{sub_help_message}},
+    },
+  ]
+)
+{% end %}
diff --git a/spec/clim/dsl_spec/sub_command_1_2_spec.cr b/spec/clim/dsl_spec/sub_command_1_2_spec.cr
new file mode 100644
index 00000000..997d917b
--- /dev/null
+++ b/spec/clim/dsl_spec/sub_command_1_2_spec.cr
@@ -0,0 +1,296 @@
+require "../dsl_spec"
+
+macro spec_for_sub_sub_commands(spec_class_name, spec_cases)
+  {% for spec_case, index in spec_cases %}
+    {% class_name = (spec_class_name.stringify + index.stringify).id %}
+
+    # define dsl
+    class {{class_name}} < Clim
+      main_command do
+        run do |opts, args|
+          assert_opts_and_args({{spec_case}})
+        end
+        sub_command "sub_command" do
+          run do |opts, args|
+            assert_opts_and_args({{spec_case}})
+          end
+          sub_command "sub_sub_command" do
+            run do |opts, args|
+              assert_opts_and_args({{spec_case}})
+            end
+          end
+        end
+      end
+    end
+
+    # spec
+    describe "sub sub command," do
+      describe "if argv is " + {{spec_case["argv"].stringify}} + "," do
+        it_blocks({{class_name}}, {{spec_case}})
+      end
+    end
+  {% end %}
+end
+
+{% begin %}
+{%
+  main_help_message = <<-HELP_MESSAGE
+
+                      Command Line Interface Tool.
+
+                      Usage:
+
+                        main_command_of_clim_library [options] [arguments]
+
+                      Options:
+
+                        --help                           Show this help.
+
+                      Sub Commands:
+
+                        sub_command   Command Line Interface Tool.
+
+
+                    HELP_MESSAGE
+
+  sub_help_message = <<-HELP_MESSAGE
+
+                     Command Line Interface Tool.
+
+                     Usage:
+
+                       sub_command [options] [arguments]
+
+                     Options:
+
+                       --help                           Show this help.
+
+                     Sub Commands:
+
+                       sub_sub_command   Command Line Interface Tool.
+
+
+                   HELP_MESSAGE
+
+  sub_sub_help_message = <<-HELP_MESSAGE
+
+                         Command Line Interface Tool.
+
+                         Usage:
+
+                           sub_sub_command [options] [arguments]
+
+                         Options:
+
+                           --help                           Show this help.
+
+
+                       HELP_MESSAGE
+%}
+
+spec_for_sub_sub_commands(
+  spec_class_name: SubSubCommandOnly,
+  spec_cases: [
+    {
+      argv:        [] of String,
+      expect_help: {{main_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["arg1"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["arg1", "arg2"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["arg1", "arg2", "arg3"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:              ["-h"],
+      exception_message: "Undefined option. \"-h\"",
+    },
+    {
+      argv:              ["--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv: ["--help"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv: ["--help", "ignore-arg"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv: ["ignore-arg", "--help"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv:        ["sub_command"],
+      expect_help: {{sub_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["sub_command", "arg1"],
+      expect_help: {{sub_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["sub_command", "arg1", "arg2"],
+      expect_help: {{sub_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["sub_command", "arg1", "arg2", "arg3"],
+      expect_help: {{sub_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:              ["sub_command", "--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "--missing-option"],
+      exception_message: "Undefined option. \"--missing-option\"",
+    },
+    {
+      argv:              ["sub_command", "-m", "arg1"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "arg1", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "-m", "-d"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:        ["sub_command", "--help"],
+      expect_help: {{sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "--help", "ignore-arg"],
+      expect_help: {{sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "ignore-arg", "--help"],
+      expect_help: {{sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "arg1"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2", "arg3"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "--missing-option"],
+      exception_message: "Undefined option. \"--missing-option\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-m", "arg1"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "arg1", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-m", "-d"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "--help"],
+      expect_help: {{sub_sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "--help", "ignore-arg"],
+      expect_help: {{sub_sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "ignore-arg", "--help"],
+      expect_help: {{sub_sub_help_message}},
+    },
+  ]
+)
+{% end %}
+
+macro spec_for_jump_over_sub_sub_command(spec_class_name, spec_cases)
+  {% for spec_case, index in spec_cases %}
+    {% class_name = (spec_class_name.stringify + index.stringify).id %}
+
+    # define dsl
+    class {{class_name}} < Clim
+      main_command do
+        run do |opts, args|
+          assert_opts_and_args({{spec_case}})
+        end
+        command "sub_command" do
+          run do |opts, args|
+          end
+          command "sub_sub_command" do
+            run do |opts, args|
+              assert_opts_and_args({{spec_case}})
+            end
+          end
+        end
+        command "jump_over_sub_sub_command" do
+          run do |opts, args|
+            assert_opts_and_args({{spec_case}})
+          end
+        end
+      end
+    end
+
+    # spec
+    describe "jump over sub_sub command," do
+      describe "if argv is " + {{spec_case["argv"].stringify}} + "," do
+        it_blocks({{class_name}}, {{spec_case}})
+      end
+    end
+  {% end %}
+end
diff --git a/spec/clim/dsl_spec/sub_command_1_3_spec.cr b/spec/clim/dsl_spec/sub_command_1_3_spec.cr
new file mode 100644
index 00000000..8306c379
--- /dev/null
+++ b/spec/clim/dsl_spec/sub_command_1_3_spec.cr
@@ -0,0 +1,261 @@
+require "../dsl_spec"
+
+macro spec_for_jump_over_sub_sub_command(spec_class_name, spec_cases)
+  {% for spec_case, index in spec_cases %}
+    {% class_name = (spec_class_name.stringify + index.stringify).id %}
+
+    # define dsl
+    class {{class_name}} < Clim
+      main_command do
+        run do |opts, args|
+          assert_opts_and_args({{spec_case}})
+        end
+        command "sub_command" do
+          run do |opts, args|
+          end
+          command "sub_sub_command" do
+            run do |opts, args|
+              assert_opts_and_args({{spec_case}})
+            end
+          end
+        end
+        command "jump_over_sub_sub_command" do
+          run do |opts, args|
+            assert_opts_and_args({{spec_case}})
+          end
+        end
+      end
+    end
+
+    # spec
+    describe "jump over sub_sub command," do
+      describe "if argv is " + {{spec_case["argv"].stringify}} + "," do
+        it_blocks({{class_name}}, {{spec_case}})
+      end
+    end
+  {% end %}
+end
+
+{% begin %}
+{%
+  main_help_message = <<-HELP_MESSAGE
+
+                        Command Line Interface Tool.
+
+                        Usage:
+
+                          main_command_of_clim_library [options] [arguments]
+
+                        Options:
+
+                          --help                           Show this help.
+
+                        Sub Commands:
+
+                          sub_command                 Command Line Interface Tool.
+                          jump_over_sub_sub_command   Command Line Interface Tool.
+
+
+                      HELP_MESSAGE
+
+  sub_sub_help_message = <<-HELP_MESSAGE
+
+                           Command Line Interface Tool.
+
+                           Usage:
+
+                             sub_sub_command [options] [arguments]
+
+                           Options:
+
+                             --help                           Show this help.
+
+
+                         HELP_MESSAGE
+
+  jump_over_sub_sub_help_message = <<-HELP_MESSAGE
+
+                                     Command Line Interface Tool.
+
+                                     Usage:
+
+                                       jump_over_sub_sub_command [options] [arguments]
+
+                                     Options:
+
+                                       --help                           Show this help.
+
+
+                                   HELP_MESSAGE
+%}
+
+spec_for_jump_over_sub_sub_command(
+  spec_class_name: JumpOverSubSubCommand,
+  spec_cases: [
+    {
+      argv:        [] of String,
+      expect_help: {{main_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["arg1"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["arg1", "arg2"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["arg1", "arg2", "arg3"],
+      expect_help: {{main_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:              ["-h"],
+      exception_message: "Undefined option. \"-h\"",
+    },
+    {
+      argv:              ["--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:        ["--help"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv:        ["--help", "ignore-arg"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv:        ["ignore-arg", "--help"],
+      expect_help: {{main_help_message}},
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "arg1"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2", "arg3"],
+      expect_help: {{sub_sub_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "--missing-option"],
+      exception_message: "Undefined option. \"--missing-option\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-m", "arg1"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "arg1", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["sub_command", "sub_sub_command", "-m", "-d"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "--help"],
+      expect_help: {{sub_sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "--help", "ignore-arg"],
+      expect_help: {{sub_sub_help_message}},
+    },
+    {
+      argv:        ["sub_command", "sub_sub_command", "ignore-arg", "--help"],
+      expect_help: {{sub_sub_help_message}},
+    },
+    {
+      argv:        ["jump_over_sub_sub_command"],
+      expect_help: {{jump_over_sub_sub_help_message}},
+      expect_args: [] of String,
+    },
+    {
+      argv:        ["jump_over_sub_sub_command", "arg1"],
+      expect_help: {{jump_over_sub_sub_help_message}},
+      expect_args: ["arg1"],
+    },
+    {
+      argv:        ["jump_over_sub_sub_command", "arg1", "arg2"],
+      expect_help: {{jump_over_sub_sub_help_message}},
+      expect_args: ["arg1", "arg2"],
+    },
+    {
+      argv:        ["jump_over_sub_sub_command", "arg1", "arg2", "arg3"],
+      expect_help: {{jump_over_sub_sub_help_message}},
+      expect_args: ["arg1", "arg2", "arg3"],
+    },
+    {
+      argv:              ["jump_over_sub_sub_command", "--help", "-ignore-option"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["jump_over_sub_sub_command", "-ignore-option", "--help"],
+      exception_message: "Undefined option. \"-ignore-option\"",
+    },
+    {
+      argv:              ["jump_over_sub_sub_command", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["jump_over_sub_sub_command", "--missing-option"],
+      exception_message: "Undefined option. \"--missing-option\"",
+    },
+    {
+      argv:              ["jump_over_sub_sub_command", "-m", "arg1"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["jump_over_sub_sub_command", "arg1", "-m"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:              ["jump_over_sub_sub_command", "-m", "-d"],
+      exception_message: "Undefined option. \"-m\"",
+    },
+    {
+      argv:        ["jump_over_sub_sub_command", "--help"],
+      expect_help: {{jump_over_sub_sub_help_message}},
+    },
+    {
+      argv:        ["jump_over_sub_sub_command", "--help", "ignore-arg"],
+      expect_help: {{jump_over_sub_sub_help_message}},
+    },
+    {
+      argv:        ["jump_over_sub_sub_command", "ignore-arg", "--help"],
+      expect_help: {{jump_over_sub_sub_help_message}},
+    },
+  ]
+)
+{% end %}
diff --git a/spec/clim/dsl_spec/sub_command_1_spec.cr b/spec/clim/dsl_spec/sub_command_1_spec.cr
deleted file mode 100644
index b20580a5..00000000
--- a/spec/clim/dsl_spec/sub_command_1_spec.cr
+++ /dev/null
@@ -1,691 +0,0 @@
-require "../dsl_spec"
-
-{% begin %}
-{%
-  main_help_message = <<-HELP_MESSAGE
-
-                      Command Line Interface Tool.
-
-                      Usage:
-
-                        main_command_of_clim_library [options] [arguments]
-
-                      Options:
-
-                        --help                           Show this help.
-
-                      Sub Commands:
-
-                        sub_command   Sub command with desc.
-
-
-                    HELP_MESSAGE
-
-  sub_help_message = <<-HELP_MESSAGE
-
-                     Sub command with desc.
-
-                     Usage:
-
-                       sub_command with usage [options] [arguments]
-
-                     Options:
-
-                       -a ARG, --array=ARG              Option test. [type:Array(String)] [default:["default string"]]
-                       --help                           Show this help.
-                       -v, --version                    Show version.
-
-
-                   HELP_MESSAGE
-%}
-
-spec(
-  spec_class_name: SubCommandWithDescUsageVersionOption,
-  spec_sub_command_lines: [
-    <<-SUB_COMMAND,
-    sub_command "sub_command" do
-      desc "Sub command with desc."
-      usage "sub_command with usage [options] [arguments]"
-      version "version 1.0.0", short: "-v"
-      option "-a ARG", "--array=ARG", desc: "Option test.", type: Array(String), default: ["default string"]
-      run do |options, arguments|
-      end
-    end
-    SUB_COMMAND
-  ],
-  spec_desc: "option type spec,",
-  spec_cases: [
-    {
-      argv:        [] of String,
-      expect_help: {{main_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["arg1"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["arg1", "arg2"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["arg1", "arg2", "arg3"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:              ["-h"],
-      exception_message: "Undefined option. \"-h\"",
-    },
-    {
-      argv:              ["--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:        ["--help"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv:        ["--help", "ignore-arg"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv:        ["ignore-arg", "--help"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv:        ["sub_command"],
-      expect_help: {{sub_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["sub_command", "arg1"],
-      expect_help: {{sub_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["sub_command", "arg1", "arg2"],
-      expect_help: {{sub_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["sub_command", "arg1", "arg2", "arg3"],
-      expect_help: {{sub_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:           ["sub_command", "--version"],
-      expect_version: "version 1.0.0\n",
-    },
-    {
-      argv:           ["sub_command", "-v"],
-      expect_version: "version 1.0.0\n",
-    },
-    {
-      argv:              ["sub_command", "--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "--missing-option"],
-      exception_message: "Undefined option. \"--missing-option\"",
-    },
-    {
-      argv:              ["sub_command", "-m", "arg1"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "arg1", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "-m", "-d"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:        ["sub_command", "--help"],
-      expect_help: {{sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "--help", "ignore-arg"],
-      expect_help: {{sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "ignore-arg", "--help"],
-      expect_help: {{sub_help_message}},
-    },
-  ]
-)
-{% end %}
-
-macro spec_for_sub_sub_commands(spec_class_name, spec_cases)
-  {% for spec_case, index in spec_cases %}
-    {% class_name = (spec_class_name.stringify + index.stringify).id %}
-
-    # define dsl
-    class {{class_name}} < Clim
-      main_command do
-        run do |opts, args|
-          assert_opts_and_args({{spec_case}})
-        end
-        sub_command "sub_command" do
-          run do |opts, args|
-            assert_opts_and_args({{spec_case}})
-          end
-          sub_command "sub_sub_command" do
-            run do |opts, args|
-              assert_opts_and_args({{spec_case}})
-            end
-          end
-        end
-      end
-    end
-
-    # spec
-    describe "sub sub command," do
-      describe "if argv is " + {{spec_case["argv"].stringify}} + "," do
-        it_blocks({{class_name}}, {{spec_case}})
-      end
-    end
-  {% end %}
-end
-
-{% begin %}
-{%
-  main_help_message = <<-HELP_MESSAGE
-
-                      Command Line Interface Tool.
-
-                      Usage:
-
-                        main_command_of_clim_library [options] [arguments]
-
-                      Options:
-
-                        --help                           Show this help.
-
-                      Sub Commands:
-
-                        sub_command   Command Line Interface Tool.
-
-
-                    HELP_MESSAGE
-
-  sub_help_message = <<-HELP_MESSAGE
-
-                     Command Line Interface Tool.
-
-                     Usage:
-
-                       sub_command [options] [arguments]
-
-                     Options:
-
-                       --help                           Show this help.
-
-                     Sub Commands:
-
-                       sub_sub_command   Command Line Interface Tool.
-
-
-                   HELP_MESSAGE
-
-  sub_sub_help_message = <<-HELP_MESSAGE
-
-                         Command Line Interface Tool.
-
-                         Usage:
-
-                           sub_sub_command [options] [arguments]
-
-                         Options:
-
-                           --help                           Show this help.
-
-
-                       HELP_MESSAGE
-%}
-
-spec_for_sub_sub_commands(
-  spec_class_name: SubSubCommandOnly,
-  spec_cases: [
-    {
-      argv:        [] of String,
-      expect_help: {{main_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["arg1"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["arg1", "arg2"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["arg1", "arg2", "arg3"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:              ["-h"],
-      exception_message: "Undefined option. \"-h\"",
-    },
-    {
-      argv:              ["--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv: ["--help"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv: ["--help", "ignore-arg"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv: ["ignore-arg", "--help"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv:        ["sub_command"],
-      expect_help: {{sub_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["sub_command", "arg1"],
-      expect_help: {{sub_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["sub_command", "arg1", "arg2"],
-      expect_help: {{sub_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["sub_command", "arg1", "arg2", "arg3"],
-      expect_help: {{sub_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:              ["sub_command", "--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "--missing-option"],
-      exception_message: "Undefined option. \"--missing-option\"",
-    },
-    {
-      argv:              ["sub_command", "-m", "arg1"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "arg1", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "-m", "-d"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:        ["sub_command", "--help"],
-      expect_help: {{sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "--help", "ignore-arg"],
-      expect_help: {{sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "ignore-arg", "--help"],
-      expect_help: {{sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "arg1"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2", "arg3"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "--missing-option"],
-      exception_message: "Undefined option. \"--missing-option\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-m", "arg1"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "arg1", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-m", "-d"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "--help"],
-      expect_help: {{sub_sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "--help", "ignore-arg"],
-      expect_help: {{sub_sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "ignore-arg", "--help"],
-      expect_help: {{sub_sub_help_message}},
-    },
-  ]
-)
-{% end %}
-
-macro spec_for_jump_over_sub_sub_command(spec_class_name, spec_cases)
-  {% for spec_case, index in spec_cases %}
-    {% class_name = (spec_class_name.stringify + index.stringify).id %}
-
-    # define dsl
-    class {{class_name}} < Clim
-      main_command do
-        run do |opts, args|
-          assert_opts_and_args({{spec_case}})
-        end
-        command "sub_command" do
-          run do |opts, args|
-          end
-          command "sub_sub_command" do
-            run do |opts, args|
-              assert_opts_and_args({{spec_case}})
-            end
-          end
-        end
-        command "jump_over_sub_sub_command" do
-          run do |opts, args|
-            assert_opts_and_args({{spec_case}})
-          end
-        end
-      end
-    end
-
-    # spec
-    describe "jump over sub_sub command," do
-      describe "if argv is " + {{spec_case["argv"].stringify}} + "," do
-        it_blocks({{class_name}}, {{spec_case}})
-      end
-    end
-  {% end %}
-end
-
-{% begin %}
-{%
-  main_help_message = <<-HELP_MESSAGE
-
-                        Command Line Interface Tool.
-
-                        Usage:
-
-                          main_command_of_clim_library [options] [arguments]
-
-                        Options:
-
-                          --help                           Show this help.
-
-                        Sub Commands:
-
-                          sub_command                 Command Line Interface Tool.
-                          jump_over_sub_sub_command   Command Line Interface Tool.
-
-
-                      HELP_MESSAGE
-
-  sub_sub_help_message = <<-HELP_MESSAGE
-
-                           Command Line Interface Tool.
-
-                           Usage:
-
-                             sub_sub_command [options] [arguments]
-
-                           Options:
-
-                             --help                           Show this help.
-
-
-                         HELP_MESSAGE
-
-  jump_over_sub_sub_help_message = <<-HELP_MESSAGE
-
-                                     Command Line Interface Tool.
-
-                                     Usage:
-
-                                       jump_over_sub_sub_command [options] [arguments]
-
-                                     Options:
-
-                                       --help                           Show this help.
-
-
-                                   HELP_MESSAGE
-%}
-
-spec_for_jump_over_sub_sub_command(
-  spec_class_name: JumpOverSubSubCommand,
-  spec_cases: [
-    {
-      argv:        [] of String,
-      expect_help: {{main_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["arg1"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["arg1", "arg2"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["arg1", "arg2", "arg3"],
-      expect_help: {{main_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:              ["-h"],
-      exception_message: "Undefined option. \"-h\"",
-    },
-    {
-      argv:              ["--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:        ["--help"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv:        ["--help", "ignore-arg"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv:        ["ignore-arg", "--help"],
-      expect_help: {{main_help_message}},
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "arg1"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "arg1", "arg2", "arg3"],
-      expect_help: {{sub_sub_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "--missing-option"],
-      exception_message: "Undefined option. \"--missing-option\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-m", "arg1"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "arg1", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["sub_command", "sub_sub_command", "-m", "-d"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "--help"],
-      expect_help: {{sub_sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "--help", "ignore-arg"],
-      expect_help: {{sub_sub_help_message}},
-    },
-    {
-      argv:        ["sub_command", "sub_sub_command", "ignore-arg", "--help"],
-      expect_help: {{sub_sub_help_message}},
-    },
-    {
-      argv:        ["jump_over_sub_sub_command"],
-      expect_help: {{jump_over_sub_sub_help_message}},
-      expect_args: [] of String,
-    },
-    {
-      argv:        ["jump_over_sub_sub_command", "arg1"],
-      expect_help: {{jump_over_sub_sub_help_message}},
-      expect_args: ["arg1"],
-    },
-    {
-      argv:        ["jump_over_sub_sub_command", "arg1", "arg2"],
-      expect_help: {{jump_over_sub_sub_help_message}},
-      expect_args: ["arg1", "arg2"],
-    },
-    {
-      argv:        ["jump_over_sub_sub_command", "arg1", "arg2", "arg3"],
-      expect_help: {{jump_over_sub_sub_help_message}},
-      expect_args: ["arg1", "arg2", "arg3"],
-    },
-    {
-      argv:              ["jump_over_sub_sub_command", "--help", "-ignore-option"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["jump_over_sub_sub_command", "-ignore-option", "--help"],
-      exception_message: "Undefined option. \"-ignore-option\"",
-    },
-    {
-      argv:              ["jump_over_sub_sub_command", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["jump_over_sub_sub_command", "--missing-option"],
-      exception_message: "Undefined option. \"--missing-option\"",
-    },
-    {
-      argv:              ["jump_over_sub_sub_command", "-m", "arg1"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["jump_over_sub_sub_command", "arg1", "-m"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:              ["jump_over_sub_sub_command", "-m", "-d"],
-      exception_message: "Undefined option. \"-m\"",
-    },
-    {
-      argv:        ["jump_over_sub_sub_command", "--help"],
-      expect_help: {{jump_over_sub_sub_help_message}},
-    },
-    {
-      argv:        ["jump_over_sub_sub_command", "--help", "ignore-arg"],
-      expect_help: {{jump_over_sub_sub_help_message}},
-    },
-    {
-      argv:        ["jump_over_sub_sub_command", "ignore-arg", "--help"],
-      expect_help: {{jump_over_sub_sub_help_message}},
-    },
-  ]
-)
-{% end %}