1 files changed, 97 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/spec/spec/ref_is_null.wast.js b/js/src/jit-test/tests/wasm/spec/spec/ref_is_null.wast.js
new file mode 100644
index 0000000000..2c7aee86e0
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/spec/spec/ref_is_null.wast.js
@@ -0,0 +1,97 @@
+/* Copyright 2021 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// ./test/core/ref_is_null.wast
+
+// ./test/core/ref_is_null.wast:1
+let $0 = instantiate(`(module
+  (func $$f1 (export "funcref") (param $$x funcref) (result i32)
+    (ref.is_null (local.get $$x))
+  )
+  (func $$f2 (export "externref") (param $$x externref) (result i32)
+    (ref.is_null (local.get $$x))
+  )
+
+  (table $$t1 2 funcref)
+  (table $$t2 2 externref)
+  (elem (table $$t1) (i32.const 1) func $$dummy)
+  (func $$dummy)
+
+  (func (export "init") (param $$r externref)
+    (table.set $$t2 (i32.const 1) (local.get $$r))
+  )
+  (func (export "deinit")
+    (table.set $$t1 (i32.const 1) (ref.null func))
+    (table.set $$t2 (i32.const 1) (ref.null extern))
+  )
+
+  (func (export "funcref-elem") (param $$x i32) (result i32)
+    (call $$f1 (table.get $$t1 (local.get $$x)))
+  )
+  (func (export "externref-elem") (param $$x i32) (result i32)
+    (call $$f2 (table.get $$t2 (local.get $$x)))
+  )
+)`);
+
+// ./test/core/ref_is_null.wast:30
+assert_return(() => invoke($0, `funcref`, [null]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:31
+assert_return(() => invoke($0, `externref`, [null]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:33
+assert_return(() => invoke($0, `externref`, [externref(1)]), [value("i32", 0)]);
+
+// ./test/core/ref_is_null.wast:35
+invoke($0, `init`, [externref(0)]);
+
+// ./test/core/ref_is_null.wast:37
+assert_return(() => invoke($0, `funcref-elem`, [0]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:38
+assert_return(() => invoke($0, `externref-elem`, [0]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:40
+assert_return(() => invoke($0, `funcref-elem`, [1]), [value("i32", 0)]);
+
+// ./test/core/ref_is_null.wast:41
+assert_return(() => invoke($0, `externref-elem`, [1]), [value("i32", 0)]);
+
+// ./test/core/ref_is_null.wast:43
+invoke($0, `deinit`, []);
+
+// ./test/core/ref_is_null.wast:45
+assert_return(() => invoke($0, `funcref-elem`, [0]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:46
+assert_return(() => invoke($0, `externref-elem`, [0]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:48
+assert_return(() => invoke($0, `funcref-elem`, [1]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:49
+assert_return(() => invoke($0, `externref-elem`, [1]), [value("i32", 1)]);
+
+// ./test/core/ref_is_null.wast:51
+assert_invalid(
+  () => instantiate(`(module (func $$ref-vs-num (param i32) (ref.is_null (local.get 0))))`),
+  `type mismatch`,
+);
+
+// ./test/core/ref_is_null.wast:55
+assert_invalid(
+  () => instantiate(`(module (func $$ref-vs-empty (ref.is_null)))`),
+  `type mismatch`,
+);