[ruby/irb] Add accidentally dropped disable_irb command back

(https://github.com/ruby/irb/pull/964)

* Add accidentally dropped disable_irb command back

* Sort command files require by name

https://github.com/ruby/irb/commit/1d627cebca

1 files changed, 28 insertions, 0 deletions

diff --git a/test/irb/command/test_disable_irb.rb b/test/irb/command/test_disable_irb.rb
new file mode 100644
index 0000000000..14a20043d5
--- /dev/null
+++ b/test/irb/command/test_disable_irb.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: false
+require 'irb'
+
+require_relative "../helper"
+
+module TestIRB
+  class DisableIRBTest < IntegrationTestCase
+    def test_disable_irb_disable_further_irb_breakpoints
+      write_ruby <<~'ruby'
+        puts "First line"
+        puts "Second line"
+        binding.irb
+        puts "Third line"
+        binding.irb
+        puts "Fourth line"
+      ruby
+
+      output = run_ruby_file do
+        type "disable_irb"
+      end
+
+      assert_match(/First line\r\n/, output)
+      assert_match(/Second line\r\n/, output)
+      assert_match(/Third line\r\n/, output)
+      assert_match(/Fourth line\r\n/, output)
+    end
+  end
+end