1 files changed, 37 insertions, 0 deletions
diff --git a/src/unique/clone_test.go b/src/unique/clone_test.go
new file mode 100644
index 0000000000..69a9a540c0
--- /dev/null
+++ b/src/unique/clone_test.go
@@ -0,0 +1,37 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package unique
+
+import (
+	"internal/abi"
+	"internal/goarch"
+	"reflect"
+	"testing"
+)
+
+func TestMakeCloneSeq(t *testing.T) {
+	testCloneSeq[testString](t, cSeq(0))
+	testCloneSeq[testIntArray](t, cSeq())
+	testCloneSeq[testEface](t, cSeq())
+	testCloneSeq[testStringArray](t, cSeq(0, 2*goarch.PtrSize, 4*goarch.PtrSize))
+	testCloneSeq[testStringStruct](t, cSeq(0))
+	testCloneSeq[testStringStructArrayStruct](t, cSeq(0, 2*goarch.PtrSize))
+	testCloneSeq[testStruct](t, cSeq(8))
+}
+
+func cSeq(stringOffsets ...uintptr) cloneSeq {
+	return cloneSeq{stringOffsets: stringOffsets}
+}
+
+func testCloneSeq[T any](t *testing.T, want cloneSeq) {
+	typName := reflect.TypeFor[T]().Name()
+	typ := abi.TypeOf(*new(T))
+	t.Run(typName, func(t *testing.T) {
+		got := makeCloneSeq(typ)
+		if !reflect.DeepEqual(got, want) {
+			t.Errorf("unexpected cloneSeq for type %s: got %#v, want %#v", typName, got, want)
+		}
+	})
+}