added test for TS interface inheritance when TS interfaces are CS classes

Author: jburzynski

src/TypeGen/TypeGen.IntegrationTest/TsInterfaceInheritance/Entities/Base.cs

@@ -0,0 +1,6 @@
+namespace TypeGen.IntegrationTest.TsInterfaceInheritance.Entities;
+
+public class Base
+{
+    
+}

src/TypeGen/TypeGen.IntegrationTest/TsInterfaceInheritance/Entities/Sub.cs

@@ -0,0 +1,6 @@
+namespace TypeGen.IntegrationTest.TsInterfaceInheritance.Entities;
+
+public class Sub : Base
+{
+    
+}

src/TypeGen/TypeGen.IntegrationTest/TsInterfaceInheritance/Expected/sub.ts

@@ -0,0 +1,9 @@
+/**
+ * This is a TypeGen auto-generated file.
+ * Any changes made to this file can be lost when this file is regenerated.
+ */
+
+import { Base } from "./base";
+
+export interface Sub extends Base {
+}

src/TypeGen/TypeGen.IntegrationTest/TsInterfaceInheritance/TsInterfaceInheritanceTest.cs

@@ -0,0 +1,31 @@
+using System.Threading.Tasks;
+using TypeGen.Core.Generator;
+using TypeGen.Core.SpecGeneration;
+using TypeGen.IntegrationTest.TestingUtils;
+using TypeGen.IntegrationTest.TsInterfaceInheritance.Entities;
+using Xunit;
+
+namespace TypeGen.IntegrationTest.TsInterfaceInheritance;
+
+public class TsInterfaceInheritanceTest : GenerationTestBase
+{
+    [Fact]
+    public async Task cs_classes_which_are_ts_interfaces_should_respect_ts_interface_inheritance()
+    {
+        var type = typeof(Sub);
+        const string expectedLocation = "TypeGen.IntegrationTest.TsInterfaceInheritance.Expected.sub.ts";
+        var generationSpec = new TsInterfaceInheritanceGenerationSpec();
+        var generatorOptions = new GeneratorOptions();
+        
+        await TestGenerationSpec(type, expectedLocation, generationSpec, generatorOptions);
+    }
+
+    private class TsInterfaceInheritanceGenerationSpec : GenerationSpec
+    {
+        public TsInterfaceInheritanceGenerationSpec()
+        {
+            AddInterface<Base>();
+            AddInterface<Sub>();
+        }
+    }
+}

src/TypeGen/TypeGen.IntegrationTest/TypeGen.IntegrationTest.csproj

@@ -113,6 +113,7 @@
 		<EmbeddedResource Include="NullableTranslation\Expected\nullable-class.ts" />
 		<EmbeddedResource Include="StructImplementsInterfaces\Expected\implements-interfaces.ts" />
 		<EmbeddedResource Include="TsClassExtendsTsInterface\Expected\ts-class.ts" />
+		<EmbeddedResource Include="TsInterfaceInheritance\Expected\sub.ts" />
 		<EmbeddedResource Include="UseDefaultExportBreaksInterfaceInheritance\Expected\product-dto.ts" />
 	</ItemGroup>