1 files changed, 54 insertions, 0 deletions
diff --git a/testing/web-platform/tests/wasm/jsapi/exception/getArg.tentative.any.js b/testing/web-platform/tests/wasm/jsapi/exception/getArg.tentative.any.js
new file mode 100644
index 0000000000..4b72c61f47
--- /dev/null
+++ b/testing/web-platform/tests/wasm/jsapi/exception/getArg.tentative.any.js
@@ -0,0 +1,54 @@
+// 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.getArg());
+  assert_throws_js(TypeError, () => exn.getArg(tag));
+}, "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.getArg(argument, 0));
+  }
+}, "Invalid exception argument");
+
+test(() => {
+  const tag = new WebAssembly.Tag({ parameters: [] });
+  const exn = new WebAssembly.Exception(tag, []);
+  assert_throws_js(RangeError, () => exn.getArg(tag, 1));
+}, "Index out of bounds");
+
+test(() => {
+  const outOfRangeValues = [
+    undefined,
+    NaN,
+    Infinity,
+    -Infinity,
+    -1,
+    0x100000000,
+    0x1000000000,
+    "0x100000000",
+    {
+      valueOf() {
+        return 0x100000000;
+      },
+    },
+  ];
+
+  const tag = new WebAssembly.Tag({ parameters: [] });
+  const exn = new WebAssembly.Exception(tag, []);
+  for (const value of outOfRangeValues) {
+    assert_throws_js(TypeError, () => exn.getArg(tag, value));
+  }
+}, "Getting out-of-range argument");
+
+test(() => {
+  const tag = new WebAssembly.Tag({ parameters: ["i32"] });
+  const exn = new WebAssembly.Exception(tag, [42]);
+  assert_equals(exn.getArg(tag, 0), 42);
+}, "getArg");