1 files changed, 58 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/xdr/decode-off-thread.js b/js/src/jit-test/tests/xdr/decode-off-thread.js
new file mode 100644
index 0000000000..844fa50342
--- /dev/null
+++ b/js/src/jit-test/tests/xdr/decode-off-thread.js
@@ -0,0 +1,58 @@
+// |jit-test| skip-if: helperThreadCount() === 0
+
+function evalWithCacheLoadOffThread(code, ctx) {
+  ctx = ctx || {};
+  ctx = Object.create(ctx, {
+    fileName: { value: "evalWithCacheCode.js" },
+    lineNumber: { value: 0 }
+  });
+  code = code instanceof Object ? code : cacheEntry(code);
+
+  var incremental = ctx.incremental || false;
+
+  // We create a new global ...
+  if (!("global" in ctx))
+    ctx.global = newGlobal({ cloneSingletons: !incremental });
+
+  var ctx_save;
+  if (incremental)
+    ctx_save = Object.create(ctx, {saveIncrementalBytecode: { value: true } });
+  else
+    ctx_save = Object.create(ctx, {saveBytecode: { value: true } });
+
+  ctx.global.generation = 0;
+  evaluate(code, ctx_save);
+
+  offThreadDecodeScript(code, ctx);
+  ctx.global.eval(`runOffThreadDecodedScript()`);
+}
+
+var test;
+
+// Decode a constant.
+test = `
+  1;
+`;
+evalWithCacheLoadOffThread(test, {});
+evalWithCacheLoadOffThread(test, { incremental: true });
+
+// Decode object literals.
+test = `
+  var obj = { a: 1, b: 2 };
+  obj.a++;
+  assertEq(obj.a, 2);
+`;
+evalWithCacheLoadOffThread(test, {});
+evalWithCacheLoadOffThread(test, { incremental: true });
+
+// Decode functions.
+test = `
+  function g() {
+    return function f() { return 1; };
+  };
+  assertEq(g()(), 1);
+`;
+evalWithCacheLoadOffThread(test, {});
+evalWithCacheLoadOffThread(test, { incremental: true });
+
+