Add a test for passing by value of structs with copy ctors.

tests/Common/Common.Tests.cs

@@ -896,4 +896,13 @@ This is a very long string. This is a very long string. This is a very long stri
             Assert.That(foo.ReturnChar16(), Is.EqualTo('a'));
         }
     }
+
+    [Test, Ignore("Indirect parameters not supported yet")]
+    public void TestStructWithCopyCtorByValue()
+    {
+        var structWithCopyCtor = new StructWithCopyCtor();
+        structWithCopyCtor.MBits = 10;
+        var ret = Common.TestStructWithCopyCtorByValue(structWithCopyCtor);
+        Assert.That(ret, Is.EqualTo(10));
+    }
 }

tests/Common/Common.cpp

@@ -1048,3 +1048,11 @@ void overloadPointer(void* p, int i)
 void overloadPointer(const void* p, int i)
 {
 }
+
+StructWithCopyCtor::StructWithCopyCtor() {}
+StructWithCopyCtor::StructWithCopyCtor(const StructWithCopyCtor& other) : mBits(other.mBits) {}
+
+uint16_t TestStructWithCopyCtorByValue(StructWithCopyCtor s)
+{
+    return s.mBits;
+}

tests/Common/Common.h

@@ -1508,3 +1508,12 @@ DLL_API void takeReferenceToVoidStar(const void*& p);
 DLL_API void takeVoidStarStar(void** p);
 DLL_API void overloadPointer(void* p, int i = 0);
 DLL_API void overloadPointer(const void* p, int i = 0);
+
+struct DLL_API StructWithCopyCtor
+{
+    StructWithCopyCtor();
+    StructWithCopyCtor(const StructWithCopyCtor& other);
+    uint16_t mBits;
+};
+
+uint16_t DLL_API TestStructWithCopyCtorByValue(StructWithCopyCtor s);