1 files changed, 135 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_frameactor_wasm-01.js b/devtools/server/tests/xpcshell/test_frameactor_wasm-01.js
new file mode 100644
index 0000000000..8bacc286f8
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_frameactor_wasm-01.js
@@ -0,0 +1,135 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* eslint-disable no-shadow */
+
+"use strict";
+
+/**
+ * Verify that wasm frame(s) can be requested from the client.
+ */
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee }) => {
+    await threadFront.reconfigure({
+      observeAsmJS: true,
+    });
+
+    await executeOnNextTickAndWaitForPause(
+      () => evalCode(debuggee),
+      threadFront
+    );
+
+    const frameResponse = await threadFront.getFrames(0, null);
+
+    Assert.equal(frameResponse.frames.length, 4);
+
+    const wasmFrame = frameResponse.frames[1];
+    Assert.equal(wasmFrame.type, "wasmcall");
+    Assert.equal(wasmFrame.this, undefined);
+
+    const location = wasmFrame.where;
+    const source = await getSourceById(threadFront, location.actor);
+    Assert.equal(location.line > 0, true);
+    Assert.equal(location.column > 0, true);
+    Assert.equal(/^wasm:(?:[^:]*:)*?[0-9a-f]{16}$/.test(source.url), true);
+
+    threadFront.resume();
+  })
+);
+
+function evalCode(debuggee) {
+  /* eslint-disable comma-spacing, max-len */
+  debuggee.eval(
+    "(" +
+      function() {
+        // WebAssembly bytecode was generated by running:
+        // js -e 'print(wasmTextToBinary("(module(import \"a\" \"b\")(func(export \"c\")call 0))"))'
+        const m = new WebAssembly.Module(
+          new Uint8Array([
+            0,
+            97,
+            115,
+            109,
+            1,
+            0,
+            0,
+            0,
+            1,
+            132,
+            128,
+            128,
+            128,
+            0,
+            1,
+            96,
+            0,
+            0,
+            2,
+            135,
+            128,
+            128,
+            128,
+            0,
+            1,
+            1,
+            97,
+            1,
+            98,
+            0,
+            0,
+            3,
+            130,
+            128,
+            128,
+            128,
+            0,
+            1,
+            0,
+            6,
+            129,
+            128,
+            128,
+            128,
+            0,
+            0,
+            7,
+            133,
+            128,
+            128,
+            128,
+            0,
+            1,
+            1,
+            99,
+            0,
+            1,
+            10,
+            138,
+            128,
+            128,
+            128,
+            0,
+            1,
+            132,
+            128,
+            128,
+            128,
+            0,
+            0,
+            16,
+            0,
+            11,
+          ])
+        );
+        const i = new WebAssembly.Instance(m, {
+          a: {
+            b: () => {
+              debugger;
+            },
+          },
+        });
+        i.exports.c();
+      } +
+      ")()"
+  );
+}