Merge pull request #612 from github/fixes/611-hostaddress-equality

Implemented operator== for HostAddress.

Author: shana

src/GitHub.Exports/Primitives/HostAddress.cs

@@ -78,6 +78,16 @@ public static bool IsGitHubDotComUri(Uri hostUri)
                    || hostUri.IsSameHost(gistUri);
         }
 
+        public static bool operator ==(HostAddress a, HostAddress b)
+        {
+            return object.ReferenceEquals(a, null) ? object.ReferenceEquals(b, null) : a.Equals(b);
+        }
+
+        public static bool operator !=(HostAddress a, HostAddress b)
+        {
+            return !(a == b);
+        }
+
         public bool IsGitHubDotCom()
         {
             return IsGitHubDotComUri(ApiUri);

src/UnitTests/GitHub.Exports/HostAddressTests.cs

@@ -0,0 +1,39 @@
+using System;
+using GitHub.Primitives;
+using Xunit;
+
+namespace UnitTests.GitHub.Exports
+{
+    public class HostAddressTests
+    {
+        [Fact]
+        public void ShouldBeEqualIfAddressesMatch()
+        {
+            var address1 = HostAddress.Create("foo.com");
+            var address2 = HostAddress.Create("foo.com");
+            var null1 = default(HostAddress);
+            var null2 = default(HostAddress);
+
+            Assert.True(address1.Equals(address2));
+            Assert.True(address1 == address2);
+            Assert.False(address1 != address2);
+            Assert.True(null1 == null2);
+        }
+
+        [Fact]
+        public void ShouldBeNotEqualIfAddressesDontMatch()
+        {
+            var address1 = HostAddress.Create("foo.com");
+            var address2 = HostAddress.Create("bar.com");
+            var null1 = default(HostAddress);
+
+            Assert.False(address1.Equals(address2));
+            Assert.False(address1 == address2);
+            Assert.True(address1 != address2);
+            Assert.False(null1 == address1);
+            Assert.False(address1 == null1);
+            Assert.True(null1 != address1);
+            Assert.True(address1 != null1);
+        }
+    }
+}

src/UnitTests/UnitTests.csproj

@@ -181,6 +181,7 @@
     <Compile Include="GitHub.Exports.Reactive\Caches\AccountCacheItemTests.cs" />
     <Compile Include="GitHub.Exports\GitServiceTests.cs" />
     <None Include="GitHub.Exports\VSServicesTests.cs" />
+    <Compile Include="GitHub.Exports\HostAddressTests.cs" />
     <Compile Include="GitHub.Exports\LocalRepositoryModelTests.cs" />
     <Compile Include="GitHub.Extensions\GuardTests.cs" />
     <Compile Include="GitHub.Extensions\UriExtensionTests.cs" />