From 5f9014125dd326b95b767ffa5f6e4f0738169ea8 Mon Sep 17 00:00:00 2001
From: Menno van Lavieren <menno.van.lavieren@uname-it.nl>
Date: Mon, 26 Jun 2017 11:43:55 +0200
Subject: [PATCH] Finished the Connectionstring Parser with extensive unit
 tests

---
 Tapeti.Tests/ConnectionStringParser.cs   | 200 +++++++++++++++++++++++
 Tapeti.Tests/Tapeti.Tests.csproj         |  13 ++
 Tapeti.Tests/packages.config             |   1 +
 Tapeti/Helpers/ConnectionstringParser.cs |  35 ++--
 Test/Test.csproj                         |   9 +
 Test/packages.config                     |   1 +
 6 files changed, 245 insertions(+), 14 deletions(-)
 create mode 100644 Tapeti.Tests/ConnectionStringParser.cs

diff --git a/Tapeti.Tests/ConnectionStringParser.cs b/Tapeti.Tests/ConnectionStringParser.cs
new file mode 100644
index 0000000..d56e95f
--- /dev/null
+++ b/Tapeti.Tests/ConnectionStringParser.cs
@@ -0,0 +1,200 @@
+using System;
+using Tapeti;
+using Tapeti.Helpers;
+using Xunit;
+
+namespace Tapet.Tests
+{
+    // ReSharper disable InconsistentNaming
+    public class ConnectionStringParserTest
+    {
+        [Fact]
+        public void EmptyConnectionString()
+        {
+            AssertConnectionString("", new TapetiConnectionParams());
+        }
+
+        [Fact]
+        public void SimpleHostname()
+        {
+            AssertConnectionString("HostName=rabbit.com", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com"
+            });
+        }
+
+
+        [Fact]
+        public void LongHostname()
+        {
+            AssertConnectionString("HostName=rabbit.1234.internal.prod.Uname-IT.com", new TapetiConnectionParams
+            {
+                HostName = "rabbit.1234.internal.prod.Uname-IT.com"
+            });
+        }
+
+        [Fact]
+        public void HostnameAndPort()
+        {
+            AssertConnectionString("HostName=rabbit.com;Port=60001", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Port = 60001
+            });
+        }
+
+        [Fact]
+        public void HostnameAndVirtualHost()
+        {
+            AssertConnectionString("HostName=rabbit.com;VirtualHost=/staging", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                VirtualHost = "/staging"
+            });
+        }
+
+        [Fact]
+        public void HostnameAndPrefetchCount()
+        {
+            AssertConnectionString("HostName=rabbit.com;PrefetchCount=5", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                PrefetchCount = 5
+            });
+        }
+
+        [Fact]
+        public void HostnameAndUsername()
+        {
+            AssertConnectionString("HostName=rabbit.com;Username=myApplication", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "myApplication"
+            });
+        }
+
+        [Fact]
+        public void HostnameAndUsernameAndPassword()
+        {
+            AssertConnectionString("HostName=rabbit.com;Username=myApplication;Password=abcd1234", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "myApplication",
+                Password = "abcd1234"
+            });
+        }
+
+        [Fact]
+        public void HostnameAndUsernameAndFunnyPassword()
+        {
+            AssertConnectionString("HostName=rabbit.com;Username=myApplication;Password=a#$%h^5Gs!`~EE357(-+)=_\\/&*|6$<>{}[]MyFaFoRiTePeTnAmE", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "myApplication",
+                Password = "a#$%h^5Gs!`~EE357(-+)=_\\/&*|6$<>{}[]MyFaFoRiTePeTnAmE"
+            });
+        }
+
+        [Fact]
+        public void ExtraSemicolon()
+        {
+            AssertConnectionString("HostName=rabbit.com;Username=myApplication;Password=abcd1234;", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "myApplication",
+                Password = "abcd1234"
+            });
+        }
+
+        [Fact]
+        public void ExtraMultipleSemicolon()
+        {
+            AssertConnectionString("HostName=rabbit.com;;;;;;;;;;;;;;Username=myApplication;Password=abcd1234;;;", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "myApplication",
+                Password = "abcd1234"
+            });
+        }
+
+        [Fact]
+        public void OnlySemicolons()
+        {
+            AssertConnectionString(";;;", new TapetiConnectionParams
+            {
+            });
+        }
+
+        [Fact]
+        public void DoubleQuotes()
+        {
+            AssertConnectionString("HostName=rabbit.com;Username=\"myApplication\"", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "myApplication",
+            });
+        }
+
+        [Fact]
+        public void DoubleQuotesInDoubleQuotes()
+        {
+            AssertConnectionString("HostName=rabbit.com;Username=\"\"\"myApplication\"\"\";Password=abcd1234", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "\"myApplication\"",
+                Password = "abcd1234"
+            });
+        }
+
+        [Fact]
+        public void CharactersInDoubleQuotes()
+        {
+            AssertConnectionString("HostName=rabbit.com;Username=\"Application?culture=\"\"nl-NL\"\";nr=5;\";Password=abcd1234", new TapetiConnectionParams
+            {
+                HostName = "rabbit.com",
+                Username = "Application?culture=\"nl-NL\";nr=5;",
+                Password = "abcd1234"
+            });
+        }
+
+        [Fact]
+        public void DifferentOrder()
+        {
+            AssertConnectionString("Username=myApplication;PrefetchCount=10;Password=1234;Port=80;VirtualHost=/test;HostName=messagebus.universe.local", new TapetiConnectionParams
+            {
+                HostName = "messagebus.universe.local",
+                Port = 80,
+                VirtualHost= "/test",
+                Username = "myApplication",
+                Password = "1234",
+                PrefetchCount= 10
+            });
+        }
+
+        [Fact]
+        public void DifferentOrderAndQuotes()
+        {
+            AssertConnectionString("Port=80;Username=myApplication;PrefetchCount=\"10\";Password=\"ab\"\"cd\";VirtualHost=\"/test\";HostName=\"messagebus.universe.local\"", new TapetiConnectionParams
+            {
+                HostName = "messagebus.universe.local",
+                Port = 80,
+                VirtualHost = "/test",
+                Username = "myApplication",
+                Password = "ab\"cd",
+                PrefetchCount = 10
+            });
+        }
+
+        private void AssertConnectionString(string connectionstring, TapetiConnectionParams expected)
+        {
+            var parsed = ConnectionStringParser.Parse(connectionstring);
+
+            Assert.Equal(expected.HostName, parsed.HostName);
+            Assert.Equal(expected.Port, parsed.Port);
+            Assert.Equal(expected.VirtualHost, parsed.VirtualHost);
+            Assert.Equal(expected.Username, parsed.Username);
+            Assert.Equal(expected.Password, parsed.Password);
+            Assert.Equal(expected.PrefetchCount, parsed.PrefetchCount);
+        }
+    }
+}
diff --git a/Tapeti.Tests/Tapeti.Tests.csproj b/Tapeti.Tests/Tapeti.Tests.csproj
index 4cbecb5..e6d35b5 100644
--- a/Tapeti.Tests/Tapeti.Tests.csproj
+++ b/Tapeti.Tests/Tapeti.Tests.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,6 +13,8 @@
     <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -57,6 +60,7 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="ConnectionStringParser.cs" />
     <Compile Include="TypeNameRoutingKeyStrategyTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
@@ -69,7 +73,16 @@
       <Name>Tapeti</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props'))" />
+  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/Tapeti.Tests/packages.config b/Tapeti.Tests/packages.config
index 44a585a..33b6c84 100644
--- a/Tapeti.Tests/packages.config
+++ b/Tapeti.Tests/packages.config
@@ -6,4 +6,5 @@
   <package id="xunit.core" version="2.1.0" targetFramework="net452" />
   <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
   <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.runner.visualstudio" version="2.2.0" targetFramework="net461" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tapeti/Helpers/ConnectionstringParser.cs b/Tapeti/Helpers/ConnectionstringParser.cs
index f2ed10e..db1d8c3 100644
--- a/Tapeti/Helpers/ConnectionstringParser.cs
+++ b/Tapeti/Helpers/ConnectionstringParser.cs
@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace Tapeti.Helpers
 {
-    public class ConnectionstringParser
+    public class ConnectionStringParser
     {
         readonly TapetiConnectionParams result = new TapetiConnectionParams();
 
@@ -16,10 +16,10 @@ namespace Tapeti.Helpers
 
         public static TapetiConnectionParams Parse(string connectionstring)
         {
-            return new ConnectionstringParser(connectionstring).result;
+            return new ConnectionStringParser(connectionstring).result;
         }
 
-        private ConnectionstringParser(string connectionstring)
+        private ConnectionStringParser(string connectionstring)
         {
             this.connectionstring = connectionstring;
 
@@ -35,7 +35,6 @@ namespace Tapeti.Helpers
 
             if (current == '=')
             {
-                MoveNext();
                 var value = ParseValue();
                 SetValue(key, value);
             }
@@ -70,21 +69,29 @@ namespace Tapeti.Helpers
         private string ParseValue()
         {
             var valueBuilder = new StringBuilder();
+
+            MoveNext();
             if (current == '"')
             {
-                while (current == '"') // support two double quotes to be an escaped quote
+                while (MoveNext())
                 {
-                    while (MoveNext() && current != '"')
+                    if (current == '"')
                     {
-                        valueBuilder.Append(current);
+                        // support two double quotes to be an escaped quote
+                        if (!MoveNext() || current != '"')
+                            break;
                     }
-                    MoveNext(); // consume the trailing double quote
+                    valueBuilder.Append(current);
                 }
             }
             else
             {
                 while (current != ';')
+                {
                     valueBuilder.Append(current);
+                    if (!MoveNext())
+                        break;
+                }
             }
 
             // Always leave the ';' to be consumed by the caller
@@ -113,12 +120,12 @@ namespace Tapeti.Helpers
         private void SetValue(string key, string value)
         {
             switch (key.ToLowerInvariant()) {
-                case "HostName": result.HostName = value; break;
-                case "Port": result.Port = int.Parse(value); break;
-                case "VirtualHost": result.VirtualHost = value; break;
-                case "Username": result.Username = value; break;
-                case "Password": result.Password = value; break;
-                case "PrefetchCount": result.PrefetchCount = ushort.Parse(value); break;
+                case "hostname": result.HostName = value; break;
+                case "port": result.Port = int.Parse(value); break;
+                case "virtualhost": result.VirtualHost = value; break;
+                case "username": result.Username = value; break;
+                case "password": result.Password = value; break;
+                case "prefetchcount": result.PrefetchCount = ushort.Parse(value); break;
             }
         }
     }
diff --git a/Test/Test.csproj b/Test/Test.csproj
index f0d07d7..e1062ee 100644
--- a/Test/Test.csproj
+++ b/Test/Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,6 +14,8 @@
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <TargetFrameworkProfile />
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -86,6 +89,12 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\xunit.runner.visualstudio.2.2.0\build\net20\xunit.runner.visualstudio.props'))" />
+  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/Test/packages.config b/Test/packages.config
index f9d28f9..2de94ea 100644
--- a/Test/packages.config
+++ b/Test/packages.config
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="SimpleInjector" version="3.3.2" targetFramework="net461" />
+  <package id="xunit.runner.visualstudio" version="2.2.0" targetFramework="net461" developmentDependency="true" />
 </packages>
\ No newline at end of file