From 9337f8a492569d9c37b03df85aa0b6e56d4d54cd Mon Sep 17 00:00:00 2001
From: vladislav-karamfilov <vladislav.karamfilov@gmail.com>
Date: Sun, 9 Oct 2016 22:47:18 +0300
Subject: [PATCH] Implemented test for IDataRecord.GetNullable<T>() extension
 method.

---
 .../Common/DataExtensions/GetNullableTests.cs | 81 +++++++++++++++++++
 .../MoreDotNet.Test/MoreDotNet.Tests.csproj   |  2 +
 2 files changed, 83 insertions(+)
 create mode 100644 Source/MoreDotNet.Test/Extensions/Common/DataExtensions/GetNullableTests.cs

diff --git a/Source/MoreDotNet.Test/Extensions/Common/DataExtensions/GetNullableTests.cs b/Source/MoreDotNet.Test/Extensions/Common/DataExtensions/GetNullableTests.cs
new file mode 100644
index 0000000..380678d
--- /dev/null
+++ b/Source/MoreDotNet.Test/Extensions/Common/DataExtensions/GetNullableTests.cs
@@ -0,0 +1,81 @@
+namespace MoreDotNet.Tests.Extensions.Common.DataExtensions
+{
+    using System;
+    using System.Data;
+
+    using Microsoft.SqlServer.Server;
+
+    using MoreDotNet.Extensions.Common;
+
+    using Xunit;
+
+    public class GetNullableTests
+    {
+        [Fact]
+        public void GetNullable_NullDataRecord_ShouldThrowException()
+        {
+            IDataRecord dataRecord = null;
+            Assert.Throws<ArgumentNullException>(() => dataRecord.GetNullable<int>(1));
+        }
+
+        [Fact]
+        public void GetNullable_InvalidOrdinal_ShouldThrowException()
+        {
+            var dataRecord = new SqlDataRecord(
+                new SqlMetaData("StringProp", SqlDbType.NVarChar, 20),
+                new SqlMetaData("IntProp", SqlDbType.Int));
+            dataRecord.SetValue(0, "String value.");
+            dataRecord.SetValue(1, 123);
+
+            Assert.Throws<IndexOutOfRangeException>(() => dataRecord.GetNullable<string>(3));
+        }
+
+        [Fact]
+        public void GetNullableString_DbNullDataRecordValue_ShouldReturnNull()
+        {
+            var dataRecord = new SqlDataRecord(
+                new SqlMetaData("StringProp", SqlDbType.NVarChar, 20),
+                new SqlMetaData("IntProp", SqlDbType.Int));
+            dataRecord.SetValue(1, 123);
+
+            Assert.Equal(null, dataRecord.GetNullable<string>(0));
+        }
+
+        [Fact]
+        public void GetNullableInt_DbNullDataRecordValue_ShouldReturnZero()
+        {
+            var dataRecord = new SqlDataRecord(
+                new SqlMetaData("StringProp", SqlDbType.NVarChar, 20),
+                new SqlMetaData("IntProp", SqlDbType.Int));
+            dataRecord.SetValue(0, "String value.");
+
+            Assert.Equal(0, dataRecord.GetNullable<int>(1));
+        }
+
+        [Fact]
+        public void GetNullableString_ValidStringValue_ShouldReturnStringValue()
+        {
+            const string StringValue = "String value.";
+            var dataRecord = new SqlDataRecord(
+                new SqlMetaData("StringProp", SqlDbType.NVarChar, 20),
+                new SqlMetaData("IntProp", SqlDbType.Int));
+            dataRecord.SetValue(0, StringValue);
+            dataRecord.SetValue(1, 123);
+
+            Assert.Equal(StringValue, dataRecord.GetNullable<string>(0));
+        }
+
+        [Fact]
+        public void GetNullableInt_ValidIntValue_ShouldReturnIntValue()
+        {
+            const int IntValue = 123;
+            var dataRecord = new SqlDataRecord(
+                new SqlMetaData("StringProp", SqlDbType.NVarChar, 20),
+                new SqlMetaData("IntProp", SqlDbType.Int));
+            dataRecord.SetValue(0, "String value.");
+            dataRecord.SetValue(1, IntValue);
+
+            Assert.Equal(IntValue, dataRecord.GetNullable<int>(1));
+        }
+    }
+}
diff --git a/Source/MoreDotNet.Test/MoreDotNet.Tests.csproj b/Source/MoreDotNet.Test/MoreDotNet.Tests.csproj
index 1854afb..187ac9e 100644
--- a/Source/MoreDotNet.Test/MoreDotNet.Tests.csproj
+++ b/Source/MoreDotNet.Test/MoreDotNet.Tests.csproj
@@ -41,6 +41,7 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
+    <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
       <HintPath>..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
@@ -76,6 +77,7 @@
     <Compile Include="Extensions\Collections\CollectionExtensions\IsNullOrEmptyTests.cs" />
     <Compile Include="Extensions\Common\ColorExtensions\ToHexStringTests.cs" />
     <Compile Include="Extensions\Common\ColorExtensions\ToRgbStringTests.cs" />
+    <Compile Include="Extensions\Common\DataExtensions\GetNullableTests.cs" />
     <Compile Include="Extensions\Common\IntegerExtensions\RangeToTests.cs" />
     <Compile Include="Extensions\Common\StringExtensions\CapitalizeTests.cs" />
     <Compile Include="Extensions\Common\StringExtensions\IsLikeTests.cs" />