1 files changed, 40 insertions, 0 deletions
diff --git a/lib/bundler/cli/check.rb b/lib/bundler/cli/check.rb
new file mode 100644
index 0000000000..493eb3ec6a
--- /dev/null
+++ b/lib/bundler/cli/check.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+module Bundler
+  class CLI::Check
+    attr_reader :options
+
+    def initialize(options)
+      @options = options
+    end
+
+    def run
+      Bundler.settings.set_command_option_if_given :path, options[:path]
+
+      definition = Bundler.definition
+      definition.validate_runtime!
+
+      begin
+        definition.check!
+        not_installed = definition.missing_specs
+      rescue GemNotFound, GitError, SolveFailure
+        Bundler.ui.error "Bundler can't satisfy your Gemfile's dependencies."
+        Bundler.ui.warn "Install missing gems with `bundle install`."
+        exit 1
+      end
+
+      if not_installed.any?
+        Bundler.ui.error "The following gems are missing"
+        not_installed.each {|s| Bundler.ui.error " * #{s.name} (#{s.version})" }
+        Bundler.ui.warn "Install missing gems with `bundle install`"
+        exit 1
+      elsif !Bundler.default_lockfile.file? && Bundler.frozen_bundle?
+        Bundler.ui.error "This bundle has been frozen, but there is no #{SharedHelpers.relative_lockfile_path} present"
+        exit 1
+      else
+        definition.lock(true) unless options[:"dry-run"]
+        Bundler.ui.info "The Gemfile's dependencies are satisfied"
+      end
+    end
+  end
+end