Add NaCl smoke test to browser_tests.

chrome/test/nacl/nacl_browsertest.cc

Index: chrome/test/nacl/nacl_browsertest.cc
diff --git a/chrome/test/nacl/nacl_browsertest.cc b/chrome/test/nacl/nacl_browsertest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8e5cf3f20f19dfb024e448ce1d0dbaf2786daf43
--- /dev/null
+++ b/chrome/test/nacl/nacl_browsertest.cc
@@ -0,0 +1,317 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/command_line.h"
+#include "base/json/json_reader.h"
+#include "base/path_service.h"
+#include "base/timer.h"
+#include "chrome/browser/ui/browser_tabstrip.h"
+#include "chrome/common/chrome_paths.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/browser/dom_operation_notification_details.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+#include "content/public/browser/notification_types.h"
+#include "content/public/browser/plugin_service.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/web_contents.h"
+#include "net/base/net_util.h"
+#include "webkit/plugins/webplugininfo.h"
+
+namespace {
+
+// Base class for handling a stream of automation messages produced by a
+// JavascriptTestObserver.
+class TestMessageHandler {
+ public:
+  enum MessageResponse {
+    // Reset the timeout and keep running.
+    CONTINUE,
+    // Stop runnning.
+    DONE
+  };
+
+  TestMessageHandler() : ok_(true) {}
+  virtual ~TestMessageHandler() {};
+
+  virtual MessageResponse HandleMessage(const std::string& json) = 0;
+
+  void SetError(const std::string& message) {
+    ok_ = false;
+    error_message_ = message;
+  }
+
+  bool ok() const {
+    return ok_;
+  }
+
+  const std::string& error_message() const {
+    return error_message_;
+  }
+
+ private:
+  bool ok_;
+  std::string error_message_;
+};
+
+// A helper base class that decodes structured automation messages of the form:
+// {"type": type_name, ...}
+class StructuredMessageHandler : public TestMessageHandler {
+ public:
+  virtual MessageResponse HandleMessage(const std::string& json) OVERRIDE {
+    scoped_ptr<Value> value;
+    base::JSONReader reader(base::JSON_ALLOW_TRAILING_COMMAS);
+    // Automation messages are stringified before they are sent because the
+    // automation channel cannot handle arbitrary objects.  This means we
+    // need to decode the json twice to get the original message.
+    value.reset(reader.ReadToValue(json));
+    if (!value.get())
+      return InternalError("Could parse automation JSON: " + json +
+                           " because " + reader.GetErrorMessage());
+
+    std::string temp;
+    if (!value->GetAsString(&temp))
+      return InternalError("Message was not a string: " + json);
+
+    value.reset(reader.ReadToValue(temp));
+    if (!value.get())
+      return InternalError("Could not parse message JSON: " + temp +
+                           " because " + reader.GetErrorMessage());
+
+    DictionaryValue* msg;
+    if (!value->GetAsDictionary(&msg))
+      return InternalError("Message was not an object: " + temp);
+
+    std::string type;
+    if (!msg->GetString("type", &type))
+      return MissingField("unknown", "type");
+
+    return HandleStructuredMessage(type, msg);
+  }
+
+  virtual MessageResponse HandleStructuredMessage(const std::string& type,
+                                                  DictionaryValue* msg) = 0;
+
+  MessageResponse MissingField(const std::string& type,
+                               const std::string& field) WARN_UNUSED_RESULT {
+    return InternalError(type + " message did not have field: " + field);
+  }
+
+  MessageResponse InternalError(const std::string& reason) WARN_UNUSED_RESULT {
+    SetError(reason);
+    return DONE;
+  }
+};
+
+// A simple structured message handler for tests that load nexes.
+class LoadTestMessageHandler : public StructuredMessageHandler {
+ public:
+   LoadTestMessageHandler() : test_passed_(false) {}
+
+  void Log(const std::string& type, const std::string& message) {
+    // TODO(ncbray) better logging.
+    LOG(INFO) << type << " " << message;
+  }
+
+  virtual MessageResponse HandleStructuredMessage(
+      const std::string& type,
+      DictionaryValue* msg) OVERRIDE {
+    if (type == "Log") {
+      std::string message;
+      if (!msg->GetString("message", &message))
+        return MissingField(type, "message");
+      Log("LOG", message);
+      return CONTINUE;
+    } else if (type == "Shutdown") {
+      std::string message;
+      if (!msg->GetString("message", &message))
+        return MissingField(type, "message");
+      if (!msg->GetBoolean("passed", &test_passed_))
+        return MissingField(type, "passed");
+      Log("SHUTDOWN", message);
+      return DONE;
+    } else {
+      return InternalError("Unknown message type: " + type);
+    }
+  }
+
+  bool test_passed() const {
+    return test_passed_;
+  }
+
+ private:
+  bool test_passed_;
+
+  DISALLOW_COPY_AND_ASSIGN(LoadTestMessageHandler);
+};
+
+// This class captures a stream of automation messages coming from a Javascript
+// test and dispatches them to a message handler.
+// TODO(ncbray) factor out and share with PPAPI tests.
+class JavascriptTestObserver : public content::NotificationObserver {
+ public:
+  JavascriptTestObserver(
+      content::RenderViewHost* render_view_host,
+      TestMessageHandler* handler)
+      : handler_(handler),
+        running_(false) {
+    registrar_.Add(this, content::NOTIFICATION_DOM_OPERATION_RESPONSE,
+                   content::Source<content::RenderViewHost>(render_view_host));
+  }
+
+  // Pump the message loop until the message handler indicates the Javascript
+  // test is done running.  Return true if the test jig functioned correctly and
+  // nothing timed out.
+  bool Run() {
+    running_ = true;
+    content::RunMessageLoop();
+    running_ = false;
+    return handler_->ok();
+  }
+
+  virtual void Observe(
+      int type,
+      const content::NotificationSource& source,
+      const content::NotificationDetails& details) OVERRIDE {
+    DCHECK(type == content::NOTIFICATION_DOM_OPERATION_RESPONSE);
+    content::Details<content::DomOperationNotificationDetails> dom_op_details(
+        details);
+    // We might receive responses for other script execution, but we only
+    // care about the test finished message.
+    TestMessageHandler::MessageResponse response =
+        handler_->HandleMessage(dom_op_details->json);
+
+    if (response == TestMessageHandler::DONE) {
+      EndTest();
+    } else {
+      Continue();
+    }
+  }
+
+ private:
+  void Continue() {
+  }
+
+  void EndTest() {
+    if (running_) {
+      MessageLoopForUI::current()->Quit();
+    }
+  }
+
+  TestMessageHandler* handler_;
+  bool running_;
+  content::NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(JavascriptTestObserver);
+};
+
+// NaCl browser tests serve files out of the build directory because nexes and
+// pexes are artifacts of the build.  To keep things tidy, all test data is kept
+// in a subdirectory.  Several variants of a test may be run, for example when
+// linked against newlib and when linked against glibc.  These variants are kept
+// in different subdirectories.  For example, the build directory will look
+// something like this on Linux:
+// out/
+//     Release/
+//             nacl_test_data/
+//                            newlib/
+//                            glibc/
+bool GetNaClVariantRoot(const FilePath::StringType& variant,
+                        FilePath* document_root) {
+  if (!ui_test_utils::GetRelativeBuildDirectory(document_root))
+    return false;
+  *document_root = document_root->Append(FILE_PATH_LITERAL("nacl_test_data"));
+  *document_root = document_root->Append(variant);
+  return true;
+}
+
+class NaClBrowserTestBase : public InProcessBrowserTest {
+ public:
+  NaClBrowserTestBase() {}
+
+  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
+    command_line->AppendSwitch(switches::kNoFirstRun);
+    command_line->AppendSwitch(switches::kEnableNaCl);
+  }
+
+  virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
+    // Sanity check.
+    FilePath plugin_lib;
+    ASSERT_TRUE(PathService::Get(chrome::FILE_NACL_PLUGIN, &plugin_lib));
+    ASSERT_TRUE(file_util::PathExists(plugin_lib)) << plugin_lib.value();
+
+    ASSERT_TRUE(StartTestServer()) << "Cannot start test server.";
+  }
+
+  virtual FilePath::StringType Variant() = 0;
+
+  GURL TestURL(const FilePath::StringType& test_file) {
+    FilePath real_path = test_server_->document_root().Append(test_file);
+    EXPECT_TRUE(file_util::PathExists(real_path)) << real_path.value();
+
+    FilePath url_path = FilePath(FILE_PATH_LITERAL("files"));
+    url_path = url_path.Append(test_file);
+    return test_server_->GetURL(url_path.MaybeAsASCII());
+  }
+
+  bool RunJavascriptTest(const GURL& url, TestMessageHandler* handler) {
+    JavascriptTestObserver observer(
+        chrome::GetActiveWebContents(browser())->GetRenderViewHost(),
+        handler);
+    ui_test_utils::NavigateToURL(browser(), url);
+    return observer.Run();
+  }
+
+  void RunLoadTest(const FilePath::StringType& test_file) {
+    LoadTestMessageHandler handler;
+    bool ok = RunJavascriptTest(TestURL(test_file), &handler);
+    ASSERT_TRUE(ok) << handler.error_message();
+    ASSERT_TRUE(handler.test_passed()) << "Test failed.";
+  }
+
+ private:
+  bool StartTestServer() {
+    // Launch the web server.
+    FilePath document_root;
+    if (!GetNaClVariantRoot(Variant(), &document_root))
+      return false;
+    test_server_.reset(new net::TestServer(net::TestServer::TYPE_HTTP,
+                                           net::TestServer::kLocalhost,
+                                           document_root));
+    return test_server_->Start();
+  }
+
+  scoped_ptr<net::TestServer> test_server_;
+};
+
+class NaClBrowserTestNewlib : public NaClBrowserTestBase {
+  virtual FilePath::StringType Variant() {
+    return FILE_PATH_LITERAL("newlib");
+  }
+};
+
+class NaClBrowserTestGLibc : public NaClBrowserTestBase {
+  virtual FilePath::StringType Variant() {
+    return FILE_PATH_LITERAL("glibc");
+  }
+};
+
+// Disable tests under Linux ASAN.
+// Linux ASAN doesn't work with NaCl.  See: http://crbug.com/104832.
+// TODO(ncbray) enable after http://codereview.chromium.org/10830009/ lands.
+#if !(defined(ADDRESS_SANITIZER) && defined(OS_LINUX))
+
+IN_PROC_BROWSER_TEST_F(NaClBrowserTestNewlib, SimpleLoadTest) {
+  RunLoadTest(FILE_PATH_LITERAL("nacl_load_test.html"));
+}
+
+IN_PROC_BROWSER_TEST_F(NaClBrowserTestGLibc, SimpleLoadTest) {
+  RunLoadTest(FILE_PATH_LITERAL("nacl_load_test.html"));
+}
+
+#endif  // !(defined(ADDRESS_SANITIZER) && defined(OS_LINUX))
+
+}  // namespace anonymous