Start work on command tests

TODO:
-[x] Test command separators
-[x] Test command searching
-[ ] Test command execution
-[ ] Test command builders (properly)
-[ ] Test ModuleClassBuilder (properly)
-[ ] Test all features of CommandServiceConfig
-[ ] Test type readers
-[ ] Test preconditions
-[ ] Test parameter preconditions
-[ ] ????

Discord.Net.sln

@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26228.4
+VisualStudioVersion = 15.0.26430.13
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Discord.Net.Core", "src\Discord.Net.Core\Discord.Net.Core.csproj", "{91E9E7BD-75C9-4E98-84AA-2C271922E5C2}"
 EndProject
@@ -24,6 +24,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Discord.Net.Tests", "test\D
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Discord.Net.Webhook", "src\Discord.Net.Webhook\Discord.Net.Webhook.csproj", "{9AFAB80E-D2D3-4EDB-B58C-BACA78D1EA30}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Tests", "Tests", "{01324441-C38B-4200-A675-0B7B32BA8CA8}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Discord.Net.Commands.Tests", "test\Discord.Net.Commands.Tests\Discord.Net.Commands.Tests.csproj", "{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -130,6 +134,18 @@ Global
 		{9AFAB80E-D2D3-4EDB-B58C-BACA78D1EA30}.Release|x64.Build.0 = Release|Any CPU
 		{9AFAB80E-D2D3-4EDB-B58C-BACA78D1EA30}.Release|x86.ActiveCfg = Release|Any CPU
 		{9AFAB80E-D2D3-4EDB-B58C-BACA78D1EA30}.Release|x86.Build.0 = Release|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Debug|x64.Build.0 = Debug|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Debug|x86.Build.0 = Debug|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Release|x64.ActiveCfg = Release|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Release|x64.Build.0 = Release|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Release|x86.ActiveCfg = Release|Any CPU
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -140,6 +156,8 @@ Global
 		{078DD7E6-943D-4D09-AFC2-D2BA58B76C9C} = {CC3D4B1C-9DE0-448B-8AE7-F3F1F3EC5C3A}
 		{688FD1D8-7F01-4539-B2E9-F473C5D699C7} = {288C363D-A636-4EAE-9AC1-4698B641B26E}
 		{6BDEEC08-417B-459F-9CA3-FF8BAB18CAC7} = {B0657AAE-DCC5-4FBF-8E5D-1FB578CF3012}
+		{C38E5BC1-11CB-4101-8A38-5B40A1BC6433} = {01324441-C38B-4200-A675-0B7B32BA8CA8}
 		{9AFAB80E-D2D3-4EDB-B58C-BACA78D1EA30} = {CC3D4B1C-9DE0-448B-8AE7-F3F1F3EC5C3A}
+		{CE02AD0A-B9D8-4C0A-B6F8-45A86D7DF3FF} = {01324441-C38B-4200-A675-0B7B32BA8CA8}
 	EndGlobalSection
 EndGlobal

src/Discord.Net.Commands/AssemblyInfo.cs

@@ -1,3 +1,4 @@
 using System.Runtime.CompilerServices;
 
-[assembly: InternalsVisibleTo("Discord.Net.Tests")]
+[assembly: InternalsVisibleTo("Discord.Net.Tests")]
+[assembly: InternalsVisibleTo("Discord.Net.Commands.Tests")]

test/Discord.Net.Commands.Tests/CommandServiceConfigTests.Data.cs

@@ -0,0 +1,26 @@
+using Discord.Commands;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Discord.Net.Commands.Tests
+{
+    partial class CommandServiceConfigTests
+    {
+        public static IEnumerable<object[]> SeparatorNodeTestData => _separatorNodeTestData;
+        private static readonly IEnumerable<object[]> _separatorNodeTestData = new List<CommandServiceConfig>
+        {
+            new CommandServiceConfig{ SeparatorChar = ' '},
+            new CommandServiceConfig{ SeparatorChar = '_'},
+            new CommandServiceConfig{ SeparatorChar = '.'},
+            new CommandServiceConfig{ SeparatorChar = '\u200b'},
+            new CommandServiceConfig{ SeparatorChar = '"'}
+        }.Select(x => new object[] { x, x.SeparatorChar });
+
+        public static IEnumerable<string> DefaultAliases => _defaultAliases;
+        private static readonly IEnumerable<string> _defaultAliases = new List<string>
+        {
+            "debug ping",
+            "debug pong"
+        };
+    }
+}

test/Discord.Net.Commands.Tests/CommandServiceConfigTests.cs

@@ -0,0 +1,50 @@
+using Discord.Commands;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Discord.Net.Commands.Tests
+{
+    public partial class CommandServiceConfigTests
+    {
+        [Theory]
+        [MemberData(nameof(SeparatorNodeTestData), MemberType = typeof(CommandServiceConfigTests))]
+        public async Task CommandSeparators(CommandServiceConfig config, char separatorChar)
+        {
+            var service = new CommandService(config);
+            var module = await service.AddModuleAsync(typeof(DummyModule)).ConfigureAwait(false);
+
+            Assert.True(CommandsLoaded(service, separatorChar));
+
+            var dummyContext = new DummyCommandContext();
+
+            foreach (var _alias in DefaultAliases)
+            {
+                var alias = _alias.Replace(' ', separatorChar);
+
+                var result = service.Search(dummyContext, alias);
+                Assert.True(result.IsSuccess, result.ErrorReason);
+            }
+        }
+
+        public bool CommandsLoaded(CommandService service, char separatorChar)
+        {
+            if (!service.Commands.Any())
+                return false;
+
+            var loadedAliases = service.Commands.SelectMany(x => x.Aliases);
+
+            foreach (var alias in DefaultAliases)
+            {
+                if (!loadedAliases.Contains(alias.Replace(' ', separatorChar)))
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+    }
+}

test/Discord.Net.Commands.Tests/Discord.Net.Commands.Tests.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp1.1</TargetFramework>
+    <PackageTargetFallback>$(PackageTargetFallback);portable-net45+win8+wp8+wpa81</PackageTargetFallback>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../../src/Discord.Net.Commands/Discord.Net.Commands.csproj" />
+    <ProjectReference Include="../../src/Discord.Net.Core/Discord.Net.Core.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
+    <PackageReference Include="xunit" Version="2.2.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
+  </ItemGroup>
+
+</Project>

test/Discord.Net.Commands.Tests/DummyCommandContext.cs

@@ -0,0 +1,20 @@
+using Discord.Commands;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Discord.Net.Commands.Tests
+{
+    class DummyCommandContext : ICommandContext
+    {
+        public IDiscordClient Client { get; set; }
+
+        public IGuild Guild { get; set; }
+
+        public IMessageChannel Channel { get; set; }
+
+        public IUser User { get; set; }
+
+        public IUserMessage Message { get; set; }
+    }
+}

test/Discord.Net.Commands.Tests/DummyModule.cs

@@ -0,0 +1,24 @@
+using Discord.Commands;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Discord.Net.Commands.Tests
+{
+    [Group("debug")]
+    class DummyModule : ModuleBase
+    {
+        [Command("ping")]
+        public Task TestCommandAsync(string param)
+        {
+            return Task.Delay(0);
+        }
+
+        [Command("pong")]
+        public Task AnotherCommandAsync(int param)
+        {
+            return Task.Delay(0);
+        }
+    }
+}