1 files changed, 43 insertions, 0 deletions
diff --git a/tests/current-bugs/generic/equality.slang b/tests/current-bugs/generic/equality.slang
new file mode 100644
index 000000000..604e347b1
--- /dev/null
+++ b/tests/current-bugs/generic/equality.slang
@@ -0,0 +1,43 @@
+//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
+
+/* A test for equality around interface types
+
+Doesn't work because
+
+.slang(8): error 38100: type 'A' does not provide required interface member 'isEqual'
+struct A : IEquality
+           ^~~~~~~~~
+ */
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+interface IEquality
+{
+    bool isEqual(IEquality rhs);
+};
+
+struct A : IEquality
+{
+    bool isEqual(IEquality rhs)
+    {
+        // Hmm. How can I cant query rhs, and then cast, so how to implement
+        return true;
+    }
+    int value;
+};
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    int index = dispatchThreadID.x;
+
+    A a = { 1 };
+    A b = { 2 };
+    
+    bool isEqual = a.isEqual(b);
+
+	outputBuffer[index] = 1 + int(isEqual);
+}
+
+