1 files changed, 25 insertions, 0 deletions
diff --git a/testing/web-platform/tests/wasm/jsapi/exception/is.tentative.any.js b/testing/web-platform/tests/wasm/jsapi/exception/is.tentative.any.js
new file mode 100644
index 0000000000..e28a88a3c5
--- /dev/null
+++ b/testing/web-platform/tests/wasm/jsapi/exception/is.tentative.any.js
@@ -0,0 +1,25 @@
+// META: global=window,dedicatedworker,jsshell
+// META: script=/wasm/jsapi/memory/assertions.js
+
+test(() => {
+  const tag = new WebAssembly.Tag({ parameters: [] });
+  const exn = new WebAssembly.Exception(tag, []);
+  assert_throws_js(TypeError, () => exn.is());
+}, "Missing arguments");
+
+test(() => {
+  const invalidValues = [undefined, null, true, "", Symbol(), 1, {}];
+  const tag = new WebAssembly.Tag({ parameters: [] });
+  const exn = new WebAssembly.Exception(tag, []);
+  for (argument of invalidValues) {
+    assert_throws_js(TypeError, () => exn.is(argument));
+  }
+}, "Invalid exception argument");
+
+test(() => {
+  const tag1 = new WebAssembly.Tag({ parameters: ["i32"] });
+  const tag2 = new WebAssembly.Tag({ parameters: ["i32"] });
+  const exn = new WebAssembly.Exception(tag1, [42]);
+  assert_true(exn.is(tag1));
+  assert_false(exn.is(tag2));
+}, "is");