namespace DSInternals.Common.Test
{
    using System;
    using Microsoft.VisualStudio.TestTools.UnitTesting;
    using DSInternals.Common.Data;

    [TestClass]
    public class DistinguishedNameTester
    {
        [TestMethod]
        public void DistinguishedName_DCNaming()
        {
            string dnStr = @"CN=John,OU=Employees,DC=adatum,DC=com";
            var dn = new DistinguishedName(dnStr);
            Assert.AreEqual(dn.ToString(), dnStr);
        }

        [TestMethod]
        public void DistinguishedName_EscapedComma()
        {
            string dnStr = @"CN=Doe\, John,OU=Employees,DC=adatum,DC=com";
            var dn = new DistinguishedName(dnStr);
            Assert.AreEqual( dnStr, dn.ToString());
        }

        [TestMethod]
        public void DistinguishedName_SpaceDot()
        {
            string dnStr = @"CN=John,OU=Employees,O=adatum Inc.,C=US";
            var dn = new DistinguishedName(dnStr);
            Assert.AreEqual(dn.ToString(), dnStr);
            Assert.AreEqual(4, dn.Components.Count);
        }

        [TestMethod]
        public void DistinguishedName_LongSpaces()
        {
            var dn = new DistinguishedName(@"    CN     =    John  , OU =  Employees,DC   =    adatum,DC = com");
            Assert.AreEqual(dn.ToString(), "CN=John,OU=Employees,DC=adatum,DC=com");
        }

        [TestMethod]
        public void DistinguishedName_Empty()
        {
            var dn = new DistinguishedName(String.Empty);
            Assert.AreEqual(dn.ToString(), String.Empty);
        }

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void DistinguishedName_AllSpaces()
        {
            var dn = new DistinguishedName("     ");
        }

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void DistinguishedName_BlankRDNValue()
        {
            var dn = new DistinguishedName("CN=,OU=Employees,DC=adatum,DC=com");
        }

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void DistinguishedName_MalformedRDN()
        {
            var dn = new DistinguishedName("CN=John,Employees,DC=adatum,DC=com");
        }

        [TestMethod]
        public void DistinguishedName_HexEncodedBinaryValueSingle()
        {
            var dn = new DistinguishedName("CN=#324312af34e4");
            Assert.AreEqual(dn.ToString(), "CN=#324312af34e4");
        }

        [TestMethod]
        public void DistinguishedName_HexEncodedBinaryValueBeginning()
        {
            var dn = new DistinguishedName("CN=#324312af34e4,OU=Employees,DC=adatum,DC=com");
            Assert.AreEqual(dn.ToString(), "CN=#324312af34e4,OU=Employees,DC=adatum,DC=com");
        }

        [TestMethod]
        public void DistinguishedName_HexEncodedBinaryValueMiddle()
        {
            var dn = new DistinguishedName("CN=John,OU=#324312af34e4,DC=adatum,DC=com");
            Assert.AreEqual(dn.ToString(), "CN=John,OU=#324312af34e4,DC=adatum,DC=com");
        }

        [TestMethod]
        public void DistinguishedName_HexEncodedBinaryValueEnd()
        {
            var dn = new DistinguishedName("CN=John,OU=Employees,DC=adatum,DC=#324312af34e4");
            Assert.AreEqual(dn.ToString(), "CN=John,OU=Employees,DC=adatum,DC=#324312af34e4");
        }

        [TestMethod]
        public void DistinguishedName_RDNComponentCount()
        {
            var dn = new DistinguishedName("CN=John,OU=Employees,DC=adatum,DC=com");
            Assert.AreEqual(dn.Components.Count, 4);
        }

        [TestMethod]
        public void DistinguishedName_SpacesAtBeginningAndEnd()
        {
            var dn = new DistinguishedName(@"CN=\     John    \ ");
            Assert.AreEqual(dn.ToString(), @"CN=\     John    \ ");
        }

        [TestMethod]
        public void DistinguishedName_HexEscapeNonSpecialCharacter()
        {
            var dn = new DistinguishedName(@"CN=John\20Doe,OU=Employees,DC=adatum,DC=com");
            Assert.AreEqual(dn.ToString(), @"CN=John Doe,OU=Employees,DC=adatum,DC=com");
        }

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void DistinguishedName_UnescapedSpecialCharacter()
        {
            var dn = new DistinguishedName(@"CN=Winkin, Blinkin, and Nod,OU=Employees,DC=adatum,DC=com");
        }

        [TestMethod]
        public void DistinguishedName_OIDs()
        {
            string dnStr1 = @"OID.3.43.128=John";
            string dnStr2 = @"3.43.128=John";
            var dn1 = new DistinguishedName(dnStr1);
            var dn2 = new DistinguishedName(dnStr2);
            Assert.AreEqual(dn1.ToString(), dnStr1);
            Assert.AreEqual(dn1.Components.Count, 1);
            Assert.AreEqual(dn2.ToString(), dnStr2);
            Assert.AreEqual(dn2.Components.Count, 1);
        }

        [TestMethod]
        public void DistinguishedName_QuotesSingle()
        {
            var dn = new DistinguishedName(@"OU=""John is cool""");
            Assert.AreEqual(dn.ToString(), "OU=John is cool");
        }

        [TestMethod]
        public void DistinguishedName_QuotesBeginning()
        {
            var dn = new DistinguishedName(@"OU=""John"",OU=is,OU=cool");
            Assert.AreEqual(dn.ToString(), "OU=John,OU=is,OU=cool");
        }

        [TestMethod]
        public void DistinguishedName_QuotesMiddle()
        {
            var dn = new DistinguishedName(@"OU=John,OU=""is"",OU=cool");
            Assert.AreEqual(dn.ToString(), "OU=John,OU=is,OU=cool");
        }

        [TestMethod]
        public void DistinguishedName_QuotesEnd()
        {
            var dn = new DistinguishedName(@"OU=John,OU=is,OU=""cool""");
            Assert.AreEqual(dn.ToString(), "OU=John,OU=is,OU=cool");
        }

        [TestMethod]
        public void DistinguishedName_UnescapedSpecialChars()
        {
            var dn = new DistinguishedName(@"OU="",=+<>#; """);
            Assert.AreEqual(dn.ToString(), @"OU=\,\=\+\<\>\#\;\ ");
        }

        [TestMethod]
        public void DistinguishedName_EscapedSpecialChars()
        {
            var dn = new DistinguishedName(@"OU=""\,\=\+\<\>\#\;\\\ """);
            Assert.AreEqual(dn.ToString(), @"OU=\,\=\+\<\>\#\;\\\ ");
        }

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void DistinguishedName_UnterminatedQuotes()
        {
            var dn = new DistinguishedName(@"OU=""John is cool");
        }

        [TestMethod]
        public void DistinguishedName_AddParent()
        {
            var dn = new DistinguishedName("CN=Users");
            dn.AddParent(new DistinguishedName("DC=adatum,DC=com"));
            Assert.AreEqual("CN=Users,DC=adatum,DC=com", dn.ToString());
        }

        [TestMethod]
        public void DistinguishedName_AddParent_Null()
        {
            var dn = new DistinguishedName("CN=Users");
            dn.AddParent((DistinguishedName)null);
            dn.AddParent((DistinguishedNameComponent)null);
            Assert.AreEqual("CN=Users", dn.ToString());
        }

        [TestMethod]
        public void DistinguishedName_AddChild()
        {
            var dn = new DistinguishedName("DC=adatum,DC=com");
            dn.AddChild("CN", "Users");
            Assert.AreEqual("CN=Users,DC=adatum,DC=com", dn.ToString());
        }

        [TestMethod]
        public void DistinguishedName_AddChild_Null()
        {
            var dn = new DistinguishedName("DC=adatum,DC=com");
            dn.AddChild((DistinguishedName)null);
            dn.AddChild((DistinguishedNameComponent)null);
            Assert.AreEqual("DC=adatum,DC=com", dn.ToString());
        }
    }
}