diff --git a/lang/interpret_test/TestAstFunc1/duplicate_resource.graph b/lang/interpret_test/TestAstFunc1/duplicate_resource.graph
new file mode 100644
index 00000000..193d5a44
--- /dev/null
+++ b/lang/interpret_test/TestAstFunc1/duplicate_resource.graph
@@ -0,0 +1,10 @@
+Edge: str(hello world) -> call:fmt.printf(str(hello world)) # a
+Vertex: call:fmt.printf(str(hello world))
+Vertex: str(/tmp/foo)
+Vertex: str(/tmp/foo)
+Vertex: str(cowsay)
+Vertex: str(cowsay)
+Vertex: str(hello world)
+Vertex: str(hello world)
+Vertex: str(installed)
+Vertex: str(newest)
diff --git a/lang/interpret_test/TestAstFunc1/duplicate_resource/main.mcl b/lang/interpret_test/TestAstFunc1/duplicate_resource/main.mcl
new file mode 100644
index 00000000..6f15b578
--- /dev/null
+++ b/lang/interpret_test/TestAstFunc1/duplicate_resource/main.mcl
@@ -0,0 +1,17 @@
+import "fmt"
+
+# these two resources are identical to each other, so we should allow it
+file "/tmp/foo" {
+	content => "hello world",
+}
+file "/tmp/foo" {
+	content => fmt.printf("hello world"),
+}
+
+# these two resources are compatible with each other, so we should allow it
+pkg "cowsay" {
+	state => "installed",
+}
+pkg "cowsay" {
+	state => "newest",
+}