Move webrick library into internal test toolchain

Merged: https://github.com/ruby/ruby/pull/3729

tool/test/webrick/test_server.rb

@@ -0,0 +1,191 @@
+# frozen_string_literal: false
+require "test/unit"
+require "tempfile"
+require "webrick"
+require_relative "utils"
+
+class TestWEBrickServer < Test::Unit::TestCase
+  class Echo < WEBrick::GenericServer
+    def run(sock)
+      while line = sock.gets
+        sock << line
+      end
+    end
+  end
+
+  def test_server
+    TestWEBrick.start_server(Echo){|server, addr, port, log|
+      TCPSocket.open(addr, port){|sock|
+        sock.puts("foo"); assert_equal("foo\n", sock.gets, log.call)
+        sock.puts("bar"); assert_equal("bar\n", sock.gets, log.call)
+        sock.puts("baz"); assert_equal("baz\n", sock.gets, log.call)
+        sock.puts("qux"); assert_equal("qux\n", sock.gets, log.call)
+      }
+    }
+  end
+
+  def test_start_exception
+    stopped = 0
+
+    log = []
+    logger = WEBrick::Log.new(log, WEBrick::BasicLog::WARN)
+
+    assert_raise(SignalException) do
+      listener = Object.new
+      def listener.to_io # IO.select invokes #to_io.
+        raise SignalException, 'SIGTERM' # simulate signal in main thread
+      end
+      def listener.shutdown
+      end
+      def listener.close
+      end
+
+      server = WEBrick::HTTPServer.new({
+        :BindAddress => "127.0.0.1", :Port => 0,
+        :StopCallback => Proc.new{ stopped += 1 },
+        :Logger => logger,
+      })
+      server.listeners[0].close
+      server.listeners[0] = listener
+
+      server.start
+    end
+
+    assert_equal(1, stopped)
+    assert_equal(1, log.length)
+    assert_match(/FATAL SignalException: SIGTERM/, log[0])
+  end
+
+  def test_callbacks
+    accepted = started = stopped = 0
+    config = {
+      :AcceptCallback => Proc.new{ accepted += 1 },
+      :StartCallback => Proc.new{ started += 1 },
+      :StopCallback => Proc.new{ stopped += 1 },
+    }
+    TestWEBrick.start_server(Echo, config){|server, addr, port, log|
+      true while server.status != :Running
+      sleep 1 if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled? # server.status behaves unexpectedly with --jit-wait
+      assert_equal(1, started, log.call)
+      assert_equal(0, stopped, log.call)
+      assert_equal(0, accepted, log.call)
+      TCPSocket.open(addr, port){|sock| (sock << "foo\n").gets }
+      TCPSocket.open(addr, port){|sock| (sock << "foo\n").gets }
+      TCPSocket.open(addr, port){|sock| (sock << "foo\n").gets }
+      assert_equal(3, accepted, log.call)
+    }
+    assert_equal(1, started)
+    assert_equal(1, stopped)
+  end
+
+  def test_daemon
+    begin
+      r, w = IO.pipe
+      pid1 = Process.fork{
+        r.close
+        WEBrick::Daemon.start
+        w.puts(Process.pid)
+        sleep 10
+      }
+      pid2 = r.gets.to_i
+      assert(Process.kill(:KILL, pid2))
+      assert_not_equal(pid1, pid2)
+    rescue NotImplementedError
+      # snip this test
+    ensure
+      Process.wait(pid1) if pid1
+      r.close
+      w.close
+    end
+  end
+
+  def test_restart_after_shutdown
+    address = '127.0.0.1'
+    port = 0
+    log = []
+    config = {
+      :BindAddress => address,
+      :Port => port,
+      :Logger => WEBrick::Log.new(log, WEBrick::BasicLog::WARN),
+    }
+    server = Echo.new(config)
+    client_proc = lambda {|str|
+      begin
+        ret = server.listeners.first.connect_address.connect {|s|
+          s.write(str)
+          s.close_write
+          s.read
+        }
+        assert_equal(str, ret)
+      ensure
+        server.shutdown
+      end
+    }
+    server_thread = Thread.new { server.start }
+    client_thread = Thread.new { client_proc.call("a") }
+    assert_join_threads([client_thread, server_thread])
+    server.listen(address, port)
+    server_thread = Thread.new { server.start }
+    client_thread = Thread.new { client_proc.call("b") }
+    assert_join_threads([client_thread, server_thread])
+    assert_equal([], log)
+  end
+
+  def test_restart_after_stop
+    log = Object.new
+    class << log
+      include Test::Unit::Assertions
+      def <<(msg)
+        flunk "unexpected log: #{msg.inspect}"
+      end
+    end
+    client_thread = nil
+    wakeup = -> {client_thread.wakeup}
+    warn_flunk = WEBrick::Log.new(log, WEBrick::BasicLog::WARN)
+    server = WEBrick::HTTPServer.new(
+      :StartCallback => wakeup,
+      :StopCallback => wakeup,
+      :BindAddress => '0.0.0.0',
+      :Port => 0,
+      :Logger => warn_flunk)
+    2.times {
+      server_thread = Thread.start {
+        server.start
+      }
+      client_thread = Thread.start {
+        sleep 0.1 until server.status == :Running || !server_thread.status
+        server.stop
+        sleep 0.1 until server.status == :Stop || !server_thread.status
+      }
+      assert_join_threads([client_thread, server_thread])
+    }
+  end
+
+  def test_port_numbers
+    config = {
+      :BindAddress => '0.0.0.0',
+      :Logger => WEBrick::Log.new([], WEBrick::BasicLog::WARN),
+    }
+
+    ports = [0, "0"]
+
+    ports.each do |port|
+      config[:Port]= port
+      server = WEBrick::GenericServer.new(config)
+      server_thread = Thread.start { server.start }
+      client_thread = Thread.start {
+        sleep 0.1 until server.status == :Running || !server_thread.status
+        server_port = server.listeners[0].addr[1]
+        server.stop
+        assert_equal server.config[:Port], server_port
+        sleep 0.1 until server.status == :Stop || !server_thread.status
+      }
+      assert_join_threads([client_thread, server_thread])
+    end
+
+    assert_raise(ArgumentError) do
+      config[:Port]= "FOO"
+      WEBrick::GenericServer.new(config)
+    end
+  end
+end