feat: Add support for the list command

lib/vimpk.rb

@@ -15,6 +15,7 @@ class Error < StandardError; end
   autoload :Git, "vimpk/git"
   autoload :Install, "vimpk/install"
   autoload :Job, "vimpk/job"
+  autoload :List, "vimpk/list"
   autoload :Move, "vimpk/move"
   autoload :Options, "vimpk/options"
   autoload :Remove, "vimpk/remove"

lib/vimpk/list.rb

@@ -0,0 +1,24 @@
+require "fileutils"
+
+module VimPK
+  class List
+    PackageNotFoundError = Class.new(StandardError)
+
+    attr_reader :dest
+
+    def initialize(options)
+      @path = options.path
+      @pack = options.pack || "*"
+      @type = options.type || "{start,opt}"
+    end
+
+    def call
+      pattern = File.join(@path, @pack, @type, "*")
+      glob = Dir.glob(pattern)
+
+      raise PackageNotFoundError, "No packages were found in #{pattern}." if glob.empty?
+
+      glob
+    end
+  end
+end

lib/vimpk/options.rb

@@ -54,7 +54,8 @@ def initialize(argv)
         parser.separator ""
         parser.separator "Commands:"
         parser.separator "        i|install REPO/NAME [--opt|--start] [--pack=PATH] [--path=PATH] Install a package"
-        parser.separator "        mv|move                                                         Move a package"
+        parser.separator "        l|list [--opt|--start] [--pack=PATH] [--path=PATH]              List packages"
+        parser.separator "        mv|move NAME [--opt|--start] [--pack=PATH]                      Move a package"
         parser.separator "        u|update                                                        Update all packages"
         parser.separator "        rm|remove NAME                                                  Remove all occurrences of a package"
       end

test/test_cli.rb

@@ -6,6 +6,8 @@ class TestCLI < Minitest::Test
   def test_valid_command
     assert_equal :install_command, VimPK::CLI.new(["i"]).command
     assert_equal :install_command, VimPK::CLI.new(["install"]).command
+    assert_equal :list_command, VimPK::CLI.new(["l"]).command
+    assert_equal :list_command, VimPK::CLI.new(["list"]).command
     assert_equal :move_command, VimPK::CLI.new(["mv"]).command
     assert_equal :move_command, VimPK::CLI.new(["move"]).command
     assert_equal :update_command, VimPK::CLI.new(["u"]).command
@@ -43,4 +45,18 @@ def test_call_help
 
     assert_match(/Usage:/, out)
   end
+
+  def test_call_list
+    using_pack_path do |path|
+      out, _err = capture_io do
+        exception = assert_raises(SystemExit) { VimPK::CLI.new(["list", "--path", path]).call }
+        assert_equal(0, exception.status)
+      end
+
+      assert_equal(<<~LIST, out)
+        #{path}/colors/opt/pretty
+        #{path}/plugins/start/someplug
+      LIST
+    end
+  end
 end

test/test_helper.rb

@@ -2,7 +2,15 @@
 
 $LOAD_PATH.unshift File.expand_path("../lib", __dir__)
 require "vimpk"
+require "fileutils"
 
 require "minitest/autorun"
 
 ENV["NO_COLOR"] = "1"
+
+def using_pack_path
+  Dir.mktmpdir do |dir|
+    FileUtils.cp_r("test/fixtures/vim/pack/.", dir)
+    yield dir
+  end
+end