test/test_basic_help.rb in cri-2.4.1 vs test/test_basic_help.rb in cri-2.5.0

@@ -19,6 +19,49 @@
     cmd.add_command(help_cmd)
 
     help_cmd.run([])
   end
 
+  def test_run_with_chain_of_commands
+    cmd = Cri::Command.define do
+      name 'root'
+      summary 'I am root!'
+
+      subcommand do
+        name 'foo'
+        summary 'I am foo!'
+
+        subcommand do
+          name 'subsubby'
+          summary 'I am subsubby!'
+        end
+      end
+    end
+
+    help_cmd = Cri::Command.new_basic_help
+    cmd.add_command(help_cmd)
+
+    # Simple call
+    stdout, stderr = capture_io_while do
+      help_cmd.run([ 'foo' ])
+    end
+    assert_match(/I am foo!/m, stdout)
+    assert_equal('', stderr)
+
+    # Subcommand
+    stdout, stderr = capture_io_while do
+      help_cmd.run([ 'foo', 'subsubby' ])
+    end
+    assert_match(/I am subsubby!/m, stdout)
+    assert_equal('', stderr)
+
+    # Non-existing subcommand
+    stdout, stderr = capture_io_while do
+      assert_raises SystemExit do
+        help_cmd.run([ 'foo', 'mysterycmd' ])
+      end
+    end
+    assert_equal '', stdout
+    assert_match(/foo: unknown command 'mysterycmd'/, stderr)
+  end
+
 end