1 files changed, 154 insertions, 0 deletions
diff --git a/spec/ruby/library/socket/socket/getnameinfo_spec.rb b/spec/ruby/library/socket/socket/getnameinfo_spec.rb
new file mode 100644
index 0000000000..394a90cb47
--- /dev/null
+++ b/spec/ruby/library/socket/socket/getnameinfo_spec.rb
@@ -0,0 +1,154 @@
+require_relative '../spec_helper'
+require_relative '../fixtures/classes'
+
+describe "Socket.getnameinfo" do
+  before :each do
+    @reverse_lookup = BasicSocket.do_not_reverse_lookup
+    BasicSocket.do_not_reverse_lookup = true
+  end
+
+  after :each do
+    BasicSocket.do_not_reverse_lookup = @reverse_lookup
+  end
+
+  it "gets the name information and don't resolve it" do
+    sockaddr = Socket.sockaddr_in 3333, '127.0.0.1'
+    name_info = Socket.getnameinfo(sockaddr, Socket::NI_NUMERICHOST | Socket::NI_NUMERICSERV)
+    name_info.should == ['127.0.0.1', "3333"]
+  end
+
+  def should_be_valid_dns_name(name)
+    # http://stackoverflow.com/questions/106179/regular-expression-to-match-hostname-or-ip-address
+    # ftp://ftp.rfc-editor.org/in-notes/rfc3696.txt
+    # http://domainkeys.sourceforge.net/underscore.html
+    valid_dns = /^(([a-zA-Z0-9_]|[a-zA-Z0-9_][a-zA-Z0-9\-_]*[a-zA-Z0-9_])\.)*([A-Za-z_]|[A-Za-z_][A-Za-z0-9\-_]*[A-Za-z0-9_])\.?$/
+    name.should =~ valid_dns
+  end
+
+  it "gets the name information and resolve the host" do
+    sockaddr = Socket.sockaddr_in 3333, '127.0.0.1'
+    name_info = Socket.getnameinfo(sockaddr, Socket::NI_NUMERICSERV)
+    should_be_valid_dns_name(name_info[0])
+    name_info[1].should == 3333.to_s
+  end
+
+  it "gets the name information and resolves the service" do
+    sockaddr = Socket.sockaddr_in 9, '127.0.0.1'
+    name_info = Socket.getnameinfo(sockaddr)
+    name_info.size.should == 2
+    should_be_valid_dns_name(name_info[0])
+    # see http://www.iana.org/assignments/port-numbers
+    name_info[1].should == 'discard'
+  end
+
+  it "gets a 3-element array and doesn't resolve hostname" do
+    name_info = Socket.getnameinfo(["AF_INET", 3333, '127.0.0.1'], Socket::NI_NUMERICHOST | Socket::NI_NUMERICSERV)
+    name_info.should == ['127.0.0.1', "3333"]
+  end
+
+  it "gets a 3-element array and resolves the service" do
+    name_info = Socket.getnameinfo ["AF_INET", 9, '127.0.0.1']
+    name_info[1].should == 'discard'
+  end
+
+  it "gets a 4-element array and doesn't resolve hostname" do
+    name_info = Socket.getnameinfo(["AF_INET", 3333, 'foo', '127.0.0.1'], Socket::NI_NUMERICHOST | Socket::NI_NUMERICSERV)
+    name_info.should == ['127.0.0.1', "3333"]
+  end
+
+  it "gets a 4-element array and resolves the service" do
+    name_info = Socket.getnameinfo ["AF_INET", 9, 'foo', '127.0.0.1']
+    name_info[1].should == 'discard'
+  end
+end
+
+describe 'Socket.getnameinfo' do
+  describe 'using a String as the first argument' do
+    before do
+      @addr = Socket.sockaddr_in(80, '127.0.0.1')
+    end
+
+    it 'raises SocketError when using an invalid String' do
+      lambda { Socket.getnameinfo('cats') }.should raise_error(SocketError)
+    end
+
+    describe 'without custom flags' do
+      it 'returns an Array containing the hostname and service name' do
+        Socket.getnameinfo(@addr).should == [SocketSpecs.hostname_reverse_lookup, 'http']
+      end
+    end
+
+    describe 'using NI_NUMERICHOST as the flag' do
+      it 'returns an Array containing the numeric hostname and service name' do
+        array = Socket.getnameinfo(@addr, Socket::NI_NUMERICHOST)
+
+        %w{127.0.0.1 ::1}.include?(array[0]).should == true
+
+        array[1].should == 'http'
+      end
+    end
+  end
+
+  SocketSpecs.each_ip_protocol do |family, ip_address, family_name|
+    before do
+      @hostname = SocketSpecs.hostname_reverse_lookup(ip_address)
+    end
+
+    describe 'using a 3 element Array as the first argument' do
+      before do
+        @addr = [family_name, 80, @hostname]
+      end
+
+      it 'raises ArgumentError when using an invalid Array' do
+        lambda { Socket.getnameinfo([family_name]) }.should raise_error(ArgumentError)
+      end
+
+      describe 'without custom flags' do
+        it 'returns an Array containing the hostname and service name' do
+          array = Socket.getnameinfo(@addr)
+          array.should be_an_instance_of(Array)
+          array[0].should include(@hostname)
+          array[1].should == 'http'
+        end
+      end
+
+      platform_is_not :windows do
+        describe 'using NI_NUMERICHOST as the flag' do
+          it 'returns an Array containing the numeric hostname and service name' do
+            Socket.getnameinfo(@addr, Socket::NI_NUMERICHOST).should == [ip_address, 'http']
+          end
+        end
+      end
+    end
+
+    describe 'using a 4 element Array as the first argument' do
+      before do
+        @addr = [family_name, 80, ip_address, ip_address]
+      end
+
+      describe 'without custom flags' do
+        it 'returns an Array containing the hostname and service name' do
+          array = Socket.getnameinfo(@addr)
+          array.should be_an_instance_of(Array)
+          array[0].should == @hostname
+          array[1].should == 'http'
+        end
+
+        it 'uses the 3rd value as the hostname if the 4th is not present' do
+          addr = [family_name, 80, ip_address, nil]
+
+          array = Socket.getnameinfo(addr)
+          array.should be_an_instance_of(Array)
+          array[0].should == @hostname
+          array[1].should == 'http'
+        end
+      end
+
+      describe 'using NI_NUMERICHOST as the flag' do
+        it 'returns an Array containing the numeric hostname and service name' do
+          Socket.getnameinfo(@addr, Socket::NI_NUMERICHOST).should == [ip_address, 'http']
+        end
+      end
+    end
+  end
+end