add basic unit tests for API interface proxying

4 files changed, 139 insertions, 0 deletions

diff --git a/src/SMAPI.Tests.ModApiConsumer/ApiConsumer.cs b/src/SMAPI.Tests.ModApiConsumer/ApiConsumer.cs
new file mode 100644
index 00000000..2c7f9952
--- /dev/null
+++ b/src/SMAPI.Tests.ModApiConsumer/ApiConsumer.cs
@@ -0,0 +1,46 @@
+using System;
+using SMAPI.Tests.ModApiConsumer.Interfaces;
+
+namespace SMAPI.Tests.ModApiConsumer
+{
+    /// <summary>A simulated API consumer.</summary>
+    public class ApiConsumer
+    {
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Call the event field on the given API.</summary>
+        /// <param name="api">The API to call.</param>
+        /// <param name="getValues">Get the number of times the event was called and the last value received.</param>
+        public void UseEventField(ISimpleApi api, out Func<(int timesCalled, int actualValue)> getValues)
+        {
+            // act
+            int calls = 0;
+            int lastValue = -1;
+            api.OnEventRaised += (sender, value) =>
+            {
+                calls++;
+                lastValue = value;
+            };
+
+            getValues = () => (timesCalled: calls, actualValue: lastValue);
+        }
+
+        /// <summary>Call the event property on the given API.</summary>
+        /// <param name="api">The API to call.</param>
+        /// <param name="getValues">Get the number of times the event was called and the last value received.</param>
+        public void UseEventProperty(ISimpleApi api, out Func<(int timesCalled, int actualValue)> getValues)
+        {
+            // act
+            int calls = 0;
+            int lastValue = -1;
+            api.OnEventRaisedProperty += (sender, value) =>
+            {
+                calls++;
+                lastValue = value;
+            };
+
+            getValues = () => (timesCalled: calls, actualValue: lastValue);
+        }
+    }
+}
diff --git a/src/SMAPI.Tests.ModApiConsumer/Interfaces/ISimpleApi.cs b/src/SMAPI.Tests.ModApiConsumer/Interfaces/ISimpleApi.cs
new file mode 100644
index 00000000..7f94e137
--- /dev/null
+++ b/src/SMAPI.Tests.ModApiConsumer/Interfaces/ISimpleApi.cs
@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+
+namespace SMAPI.Tests.ModApiConsumer.Interfaces
+{
+    /// <summary>A mod-provided API which provides basic events, properties, and methods.</summary>
+    public interface ISimpleApi
+    {
+        /*********
+        ** Test interface
+        *********/
+        /****
+        ** Events
+        ****/
+        /// <summary>A simple event field.</summary>
+        event EventHandler<int> OnEventRaised;
+
+        /// <summary>A simple event property with custom add/remove logic.</summary>
+        event EventHandler<int> OnEventRaisedProperty;
+
+
+        /****
+        ** Properties
+        ****/
+        /// <summary>A simple numeric property.</summary>
+        int NumberProperty { get; set; }
+
+        /// <summary>A simple object property.</summary>
+        object ObjectProperty { get; set; }
+
+        /// <summary>A simple list property.</summary>
+        List<string> ListProperty { get; set; }
+
+        /// <summary>A simple list property with an interface.</summary>
+        IList<string> ListPropertyWithInterface { get; set; }
+
+        /// <summary>A property with nested generics.</summary>
+        IDictionary<string, IList<string>> GenericsProperty { get; set; }
+
+        /// <summary>A property using an enum available to both mods.</summary>
+        BindingFlags EnumProperty { get; set; }
+
+        /// <summary>A read-only property.</summary>
+        int GetterProperty { get; }
+
+
+        /****
+        ** Methods
+        ****/
+        /// <summary>A simple method with no return value.</summary>
+        void GetNothing();
+
+        /// <summary>A simple method which returns a number.</summary>
+        int GetInt(int value);
+
+        /// <summary>A simple method which returns an object.</summary>
+        object GetObject(object value);
+
+        /// <summary>A simple method which returns a list.</summary>
+        List<string> GetList(string value);
+
+        /// <summary>A simple method which returns a list with an interface.</summary>
+        IList<string> GetListWithInterface(string value);
+
+        /// <summary>A simple method which returns nested generics.</summary>
+        IDictionary<string, IList<string>> GetGenerics(string key, string value);
+
+        /// <summary>A simple method which returns a lambda.</summary>
+        Func<string, string> GetLambda(Func<string, string> value);
+
+
+        /****
+        ** Inherited members
+        ****/
+        /// <summary>A property inherited from a base class.</summary>
+        public string InheritedProperty { get; set; }
+    }
+}
diff --git a/src/SMAPI.Tests.ModApiConsumer/README.md b/src/SMAPI.Tests.ModApiConsumer/README.md
new file mode 100644
index 00000000..ed0c6e3f
--- /dev/null
+++ b/src/SMAPI.Tests.ModApiConsumer/README.md
@@ -0,0 +1,3 @@
+This project contains a simulated [mod-provided API] consumer used in the API proxying unit tests.
+
+[mod-provided API]: https://stardewvalleywiki.com/Modding:Modder_Guide/APIs/Integrations
diff --git a/src/SMAPI.Tests.ModApiConsumer/SMAPI.Tests.ModApiConsumer.csproj b/src/SMAPI.Tests.ModApiConsumer/SMAPI.Tests.ModApiConsumer.csproj
new file mode 100644
index 00000000..7fef4ebd
--- /dev/null
+++ b/src/SMAPI.Tests.ModApiConsumer/SMAPI.Tests.ModApiConsumer.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <Import Project="..\..\build\common.targets" />
+
+  <ItemGroup>
+    <ProjectReference Include="..\SMAPI\SMAPI.csproj" />
+  </ItemGroup>
+</Project>