Add guard gem

ruby/Gemfile

@@ -1,5 +1,7 @@
 source "https://rubygems.org"
 
+gem "guard", "~> 2.19"
+gem "guard-rake", "~> 1.0"
 gem "minitest", "~> 6.0"
 gem "parser", "~> 3.3.10"
 gem "rake", "~> 13.0"

ruby/Gemfile.lock

@@ -2,20 +2,57 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.3)
+    coderay (1.1.3)
+    ffi (1.17.3-arm64-darwin)
+    ffi (1.17.3-x86_64-linux-gnu)
+    formatador (1.2.3)
+      reline
+    guard (2.19.1)
+      formatador (>= 0.2.4)
+      listen (>= 2.7, < 4.0)
+      logger (~> 1.6)
+      lumberjack (>= 1.0.12, < 2.0)
+      nenv (~> 0.1)
+      notiffany (~> 0.0)
+      ostruct (~> 0.6)
+      pry (>= 0.13.0)
+      shellany (~> 0.0)
+      thor (>= 0.18.1)
+    guard-rake (1.0.0)
+      guard
+      rake
     io-console (0.8.2)
     json (2.18.0)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
+    listen (3.9.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    logger (1.7.0)
+    lumberjack (1.4.2)
+    method_source (1.1.0)
     minitest (6.0.1)
       prism (~> 1.5)
+    nenv (0.3.0)
+    notiffany (0.1.3)
+      nenv (~> 0.1)
+      shellany (~> 0.0)
+    ostruct (0.6.3)
     parallel (1.27.0)
     parser (3.3.10.0)
       ast (~> 2.4.1)
       racc
     prism (1.7.0)
+    pry (0.16.0)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+      reline (>= 0.6.0)
     racc (1.8.1)
     rainbow (3.1.1)
     rake (13.3.1)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.11.1)
+      ffi (~> 1.0)
     regexp_parser (2.11.3)
     reline (0.6.3)
       io-console (~> 0.5)
@@ -38,6 +75,7 @@ GEM
       rubocop (>= 1.75.0, < 2.0)
       rubocop-ast (>= 1.47.1, < 2.0)
     ruby-progressbar (1.13.0)
+    shellany (0.0.1)
     standard (1.52.0)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.0)
@@ -50,6 +88,7 @@ GEM
     standard-performance (1.9.0)
       lint_roller (~> 1.1)
       rubocop-performance (~> 1.26.0)
+    thor (1.4.0)
     unicode-display_width (3.2.0)
       unicode-emoji (~> 4.1)
     unicode-emoji (4.2.0)
@@ -63,6 +102,8 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  guard (~> 2.19)
+  guard-rake
   minitest (~> 6.0)
   parser (~> 3.3.10)
   rake (~> 13.0)

ruby/Guardfile

@@ -0,0 +1,5 @@
+guard :rake, task: "test" do
+  watch(%r{^test/.*_test\.rb$})
+  watch(%r{^shell/.*\.rb$}) { "test" }
+  watch("shell.rb") { "test" }
+end