make a move on compile

tests/CMakeLists.txt

@@ -20,6 +20,7 @@ target_sources(tests PRIVATE
   arg_reduce_tests.cpp
   autograd_tests.cpp
   blas_tests.cpp
+  compile_tests.cpp
   creations_tests.cpp
   device_tests.cpp
   eval_tests.cpp

tests/compile_tests.cpp

@@ -0,0 +1,17 @@
+// Copyright © 2023 Apple Inc.
+
+#include "doctest/doctest.h"
+
+#include "mlx/mlx.h"
+
+using namespace mlx::core;
+
+std::vector<array> simple_fun(const std::vector<array>& inputs) {
+  return std::vector<array>{inputs[0] + inputs[1]};
+};
+
+TEST_CASE("test simple compile") {
+  auto compfn = compile(simple_fun);
+  auto out = compfn({array(1.0), array(2.0)})[0];
+  CHECK_EQ(out.item<float>(), 3.0f);
+}