1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/jit-test/lib/wasm-caching.js b/js/src/jit-test/lib/wasm-caching.js
new file mode 100644
index 0000000000..fc39ab999d
--- /dev/null
+++ b/js/src/jit-test/lib/wasm-caching.js
@@ -0,0 +1,37 @@
+const {Module, Instance, compileStreaming, RuntimeError} = WebAssembly;
+
+function testCached(code, imports, test) {
+    if (typeof code === 'string')
+        code = wasmTextToBinary(code);
+
+    let success = false;
+    let cache = streamCacheEntry(code);
+    assertEq(cache.cached, false);
+    compileStreaming(cache)
+    .then(m => {
+         test(new Instance(m, imports));
+         if (!wasmTestSerializationEnabled()) {
+             assertEq(wasmLoadedFromCache(m), false);
+         }
+         while (!wasmHasTier2CompilationCompleted(m)) {
+            sleep(1);
+         }
+         assertEq(cache.cached, true);
+         return compileStreaming(cache);
+     })
+     .then(m => {
+         test(new Instance(m, imports));
+         assertEq(wasmLoadedFromCache(m), true);
+         assertEq(cache.cached, true);
+
+         let m2 = wasmCompileInSeparateProcess(code);
+         test(new Instance(m2, imports));
+         assertEq(wasmLoadedFromCache(m2), true);
+
+         success = true;
+     })
+     .catch(err => { print(String(err) + " at:\n" + err.stack) });
+
+     drainJobQueue();
+     assertEq(success, true);
+}