1 files changed, 103 insertions, 0 deletions
diff --git a/spec/ruby/library/socket/basicsocket/do_not_reverse_lookup_spec.rb b/spec/ruby/library/socket/basicsocket/do_not_reverse_lookup_spec.rb
new file mode 100644
index 0000000000..36338bfd59
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+++ b/spec/ruby/library/socket/basicsocket/do_not_reverse_lookup_spec.rb
@@ -0,0 +1,103 @@
+require_relative '../spec_helper'
+require_relative '../fixtures/classes'
+
+describe "BasicSocket.do_not_reverse_lookup" do
+  before :each do
+    @do_not_reverse_lookup = BasicSocket.do_not_reverse_lookup
+    @server = TCPServer.new('127.0.0.1', 0)
+    @port = @server.addr[1]
+    @socket = TCPSocket.new('127.0.0.1', @port)
+  end
+
+  after :each do
+    @server.close unless @server.closed?
+    @socket.close unless @socket.closed?
+    BasicSocket.do_not_reverse_lookup = @do_not_reverse_lookup
+  end
+
+  it "defaults to true" do
+    BasicSocket.do_not_reverse_lookup.should == true
+  end
+
+  it "causes 'peeraddr' to avoid name lookups" do
+    @socket.do_not_reverse_lookup = true
+    BasicSocket.do_not_reverse_lookup = true
+    @socket.peeraddr.should == ["AF_INET", @port, "127.0.0.1", "127.0.0.1"]
+  end
+
+  it "looks for hostnames when set to false" do
+    @socket.do_not_reverse_lookup = false
+    BasicSocket.do_not_reverse_lookup = false
+    @socket.peeraddr[2].should == SocketSpecs.hostname
+  end
+
+  it "looks for numeric addresses when set to true" do
+    @socket.do_not_reverse_lookup = true
+    BasicSocket.do_not_reverse_lookup = true
+    @socket.peeraddr[2].should == "127.0.0.1"
+  end
+end
+
+describe :socket_do_not_reverse_lookup, shared: true do
+  it "inherits from BasicSocket.do_not_reverse_lookup when the socket is created" do
+    @socket = @method.call
+    reverse = BasicSocket.do_not_reverse_lookup
+    @socket.do_not_reverse_lookup.should == reverse
+
+    BasicSocket.do_not_reverse_lookup = !reverse
+    @socket.do_not_reverse_lookup.should == reverse
+  end
+
+  it "is true when BasicSocket.do_not_reverse_lookup is true" do
+    BasicSocket.do_not_reverse_lookup = true
+    @socket = @method.call
+    @socket.do_not_reverse_lookup.should == true
+  end
+
+  it "is false when BasicSocket.do_not_reverse_lookup is false" do
+    BasicSocket.do_not_reverse_lookup = false
+    @socket = @method.call
+    @socket.do_not_reverse_lookup.should == false
+  end
+
+  it "can be changed with #do_not_reverse_lookup=" do
+    @socket = @method.call
+    reverse = @socket.do_not_reverse_lookup
+    @socket.do_not_reverse_lookup = !reverse
+    @socket.do_not_reverse_lookup.should == !reverse
+  end
+end
+
+describe "BasicSocket#do_not_reverse_lookup" do
+  before :each do
+    @do_not_reverse_lookup = BasicSocket.do_not_reverse_lookup
+    @server = TCPServer.new('127.0.0.1', 0)
+    @port = @server.addr[1]
+  end
+
+  after :each do
+    @server.close unless @server.closed?
+    @socket.close if @socket && !@socket.closed?
+    BasicSocket.do_not_reverse_lookup = @do_not_reverse_lookup
+  end
+
+  describe "for an TCPSocket.new socket" do
+    it_behaves_like :socket_do_not_reverse_lookup, -> {
+      TCPSocket.new('127.0.0.1', @port)
+    }
+  end
+
+  describe "for an TCPServer#accept socket" do
+    before :each do
+      @client = TCPSocket.new('127.0.0.1', @port)
+    end
+
+    after :each do
+      @client.close if @client && !@client.closed?
+    end
+
+    it_behaves_like :socket_do_not_reverse_lookup, -> {
+      @server.accept
+    }
+  end
+end