[wasm] Add inspector test for stack traces

test/inspector/debugger/wasm-stack.js

Index: test/inspector/debugger/wasm-stack.js
diff --git a/test/inspector/debugger/asm-js-stack.js b/test/inspector/debugger/wasm-stack.js
similarity index 57%
copy from test/inspector/debugger/asm-js-stack.js
copy to test/inspector/debugger/wasm-stack.js
index 37db088ba19a710ee9fcb9652923b138ab7239bd..b443a283f324c5bb02107c89ca41df52425faf4b 100644
--- a/test/inspector/debugger/asm-js-stack.js
+++ b/test/inspector/debugger/wasm-stack.js
@@ -2,34 +2,49 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --validate-asm
-
-function testFunction() {
-  function generateAsmJs(stdlib, foreign, heap) {
-    'use asm';
-    var debugger_fun = foreign.call_debugger;
-    function callDebugger() {
-      debugger_fun();
-    }
-    function redirectFun() {
-      callDebugger();
-    }
-    return redirectFun;
-  }
+// Flags: --expose-wasm
+
+load('test/mjsunit/wasm/wasm-constants.js');
+load('test/mjsunit/wasm/wasm-module-builder.js');
+
+var builder = new WasmModuleBuilder();
+
+var imported_idx = builder.addImport("func", kSig_v_v);
+
+var call_imported_idx = builder.addFunction("main", kSig_v_v)
+  .addBody([kExprCallFunction, imported_idx])
+  .index;
 
+builder.addFunction("main", kSig_v_v)
+  .addBody([kExprCallFunction, call_imported_idx])
+  .exportAs("main");
+
+var module_bytes = builder.toArray();
+
+function testFunction(bytes) {
   function call_debugger() {
     debugger;
   }
 
-  var fun = generateAsmJs(this, {'call_debugger': call_debugger}, undefined);
-  fun();
+  var buffer = new ArrayBuffer(bytes.length);
+  var view = new Uint8Array(buffer);
+  for (var i = 0; i < bytes.length; i++) {
+    view[i] = bytes[i] | 0;
+  }
+
+  var module = new WebAssembly.Module(buffer);
+  var instance = new WebAssembly.Instance(module, {func: call_debugger});
+
+  instance.exports.main();
 }
 
 InspectorTest.addScript(testFunction.toString());
 
 Protocol.Debugger.enable();
-Protocol.Debugger.oncePaused().then(handleDebuggerPaused);
-Protocol.Runtime.evaluate({'expression': 'testFunction()'});
+Protocol.Debugger.onPaused(handleDebuggerPaused);
+InspectorTest.log('Running testFunction with generated WASM bytes...');
+Protocol.Runtime.evaluate(
+    {'expression': 'testFunction(' + JSON.stringify(module_bytes) + ')'});
 
 function locationToString(callFrame) {
   var res = {functionName: callFrame.functionName};
@@ -61,7 +76,7 @@ function handleDebuggerPaused(messageObject)
   Protocol.Debugger
       .evaluateOnCallFrame({
         callFrameId: topFrameId,
-        expression: '(new Error("getting stack trace")).stack'
+        expression: '(new Error("this is your stack trace:")).stack'
       })
       .then(callbackEvaluate);
 }
@@ -70,9 +85,9 @@ function callbackEvaluate(response)
 {
   InspectorTest.log(
       'Result of evaluate (' + response.result.result.type + '):');
-  var result_lines = response.result.result.value.split("\n");
+  var result_lines = response.result.result.value.split('\n');
   // Skip the second line, containing the 'evaluate' position.
-  result_lines[1] = "    -- skipped --";
+  result_lines[1] = '    -- skipped --';
   InspectorTest.log(result_lines.join('\n'));
   InspectorTest.log('Finished!');
   InspectorTest.completeTest();