Add integration tests (#16)

* Add integration tests

* Improving integration test, fixing non-exhaustive switch and adding test for that

* Small regex fix

RqliteDotnet.IntegrationTest/RqliteClientTests.cs

@@ -0,0 +1,30 @@
+using System.Text.RegularExpressions;
+using DotNet.Testcontainers.Builders;
+using NUnit.Framework;
+
+namespace RqliteDotnet.IntegrationTest;
+
+public class RqliteClientTests
+{
+    private const int Port = 4001;
+
+    [Test]
+    public async Task RqliteClientPing_Works()
+    {
+        var container = new ContainerBuilder()
+            .WithImage("rqlite/rqlite:8.32.7")
+            .WithPortBinding(Port, true)
+            .WithWaitStrategy(Wait.ForUnixContainer().UntilHttpRequestIsSucceeded(r => r.ForPort(Port)))
+            .Build();
+
+        await container.StartAsync().ConfigureAwait(false);
+
+        var url = $"http://{container.Hostname}:{container.GetMappedPublicPort(Port)}";
+        var client = new RqliteClient(url);
+
+        var version = await client.Ping();
+
+        Assert.That(version, Is.Not.Empty);
+        Assert.That(Regex.IsMatch(version, @"v\d+.\d+\.*")); //v8.10.1
+    }
+}

RqliteDotnet.IntegrationTest/RqliteDotnet.IntegrationTest.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+      <PackageReference Include="NUnit" Version="4.2.2" />
+      <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
+      <PackageReference Include="Testcontainers" Version="4.0.0" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\RqliteDotnet\RqliteDotnet.csproj" />
+    </ItemGroup>
+
+</Project>

RqliteDotnet.Test/UrlBuilderTests.cs

@@ -1,3 +1,4 @@
+using System;
 using NUnit.Framework;
 
 namespace RqliteDotnet.Test;
@@ -25,4 +26,12 @@ public void UrlBuilder_BuildsCorrectUrlWithReadLevel()
         Assert.That(url.StartsWith(baseUrl));
         Assert.That(url, Is.EqualTo("/db/query?timings&q=select%20%2A%20from%20foo&level=strong"));
     }
+
+    [Test]
+    public void UrlBuilder_ThrowsWhenIncorrectReadLevelSupplied()
+    {
+        var query = "select * from foo";
+        var baseUrl = "/db/query?timings";
+        Assert.Throws<ArgumentException>(() => UrlBuilder.Build(baseUrl, query, (ReadLevel)0));
+    }
 }

RqliteDotnet.sln

@@ -6,6 +6,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RqliteDotnetExample", "Rqli
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RqliteDotnet.Test", "RqliteDotnet.Test\RqliteDotnet.Test.csproj", "{694FCE70-640F-4CAD-852A-4D9031600ADC}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RqliteDotnet.IntegrationTest", "RqliteDotnet.IntegrationTest\RqliteDotnet.IntegrationTest.csproj", "{949312B5-5476-4AEA-9669-CD6CE44B6242}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -24,5 +26,9 @@ Global
 		{694FCE70-640F-4CAD-852A-4D9031600ADC}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{694FCE70-640F-4CAD-852A-4D9031600ADC}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{694FCE70-640F-4CAD-852A-4D9031600ADC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{949312B5-5476-4AEA-9669-CD6CE44B6242}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{949312B5-5476-4AEA-9669-CD6CE44B6242}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{949312B5-5476-4AEA-9669-CD6CE44B6242}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{949312B5-5476-4AEA-9669-CD6CE44B6242}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

RqliteDotnet/UrlBuilder.cs

@@ -19,7 +19,8 @@ private static string GetReadLevel(ReadLevel level)
             ReadLevel.Linearizable => "&level=linearizable",
             ReadLevel.Strong => "&level=strong",
             ReadLevel.None => "&level=none",
-            ReadLevel.Auto => "&level=auto"
+            ReadLevel.Auto => "&level=auto",
+            _ => throw new ArgumentException("Unknown read level")
         };
         return result;
     }