Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/tests/ppapi_test_lib/test_interface.h

Index: ppapi/native_client/tests/ppapi_test_lib/test_interface.h
===================================================================
--- ppapi/native_client/tests/ppapi_test_lib/test_interface.h	(revision 0)
+++ ppapi/native_client/tests/ppapi_test_lib/test_interface.h	(revision 0)
@@ -0,0 +1,175 @@
+// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Functions and constants for test registration and setup.
+//
+// NOTE: These must be implemented by the tester:
+// - SetupTests()
+// - SetupPluginInterfaces()
+//
+// Sample Usage:
+//
+//   void MyCallback(void* user_data, int32_t result) { ... }
+//
+//   void TestPPBFoo() {
+//     // sync test case
+//     PP_Resource my_resource = PPBFoo()->Create(kInvalidInstance);
+//     EXPECT(my_resource == kInvalidResource);
+//
+//     // async test case
+//     PP_CompletionCallback testable_callback =
+//         MakeTestableCompletionCallback("MyCallback", MyCallback, NULL);
+//     int32_t pp_error = PPBFoo()->AsyncFunction(testable_callback);
+//     EXPECT(pp_error == PP_OK_COMPLETIONPENDING);
+//
+//     TEST_PASSED;
+//   }
+//
+//   void SetupTests() {
+//     RegisterTest("TestPPBFoo", TestPPBFoo);
+//   }
+//
+//   const PPP_Bar ppp_bar_interface = { ... };
+//
+//   void SetupPluginInterface() {
+//     RegisterPluginInterface(PPP_BAR_INTERFACE, &ppp_bar_interface);
+//   }
+//
+
+#ifndef NATIVE_CLIENT_TESTS_PPAPI_TEST_PPB_TEMPLATE_TEST_INTERFACE_H
+#define NATIVE_CLIENT_TESTS_PPAPI_TEST_PPB_TEMPLATE_TEST_INTERFACE_H
+
+#include <stdio.h>
+#include <limits>
+
+#include <sstream>
+
+#include "native_client/src/include/nacl_string.h"
+
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_module.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_var.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// These must be implemented by the tester
+////////////////////////////////////////////////////////////////////////////////
+
+// Use RegisterTest() to register each TestFunction.
+void SetupTests();
+// Use RegisterPluginInterface() to register custom PPP_ interfaces other than
+// PPP_Instance that is required and provided by default.
+void SetupPluginInterfaces();
+
+////////////////////////////////////////////////////////////////////////////////
+// Test helpers
+////////////////////////////////////////////////////////////////////////////////
+
+// Registers test_function, so it is callable from JS using
+// plugin.postMessage(test_name);
+typedef void (*TestFunction)();
+void RegisterTest(nacl::string test_name, TestFunction test_function);
+
+// Registers ppp_interface, so it is returned by PPP_GetInterface().
+void RegisterPluginInterface(const char* interface_name,
+                             const void* ppp_interface);
+
+// Helper for creating user callbacks whose invocation will be reported to JS.
+// Callback setting allows for synchronous completion to make it easier to
+// test error conditions.
+// WARNING: Do not reuse this callback if the operation that took it as an arg
+// returned PP_OK_COMPLETIONPENDING. The wrapper allocates data on creation
+// and then deallocates it when the callback is invoked.
+PP_CompletionCallback MakeTestableCompletionCallback(
+    const char* callback_name,  // will be postmessage'ed to JS
+    PP_CompletionCallback_Func func,
+    void* user_data);
+PP_CompletionCallback MakeTestableCompletionCallback(
+    const char* callback_name,  // will be postmessage'ed to JS
+    PP_CompletionCallback_Func func);
+
+// Uses PPB_Messaging interface to post "test_name:message".
+void PostTestMessage(nacl::string test_name, nacl::string message);
+
+// Make a STRING var.
+PP_Var PP_MakeString(const char* s);
+
+// Convert var into printable string (for debuggin)
+nacl::string StringifyVar(const PP_Var& var);
+
+// Use to verify the result of a test and report failures.
+#define EXPECT(expr) do { \
+  if (!(expr)) { \
+    char error[1024]; \
+    snprintf(error, sizeof(error), \
+             "ERROR at %s:%d: %s\n", __FILE__, __LINE__, #expr); \
+    fprintf(stderr, "%s", error); \
+    PostTestMessage(__FUNCTION__, error); \
+  } \
+} while (0)
+
+// Check expected value of INT32 var.
+#define EXPECT_VAR_INT(var, val) \
+  EXPECT(var.type == PP_VARTYPE_INT32 && var.value.as_int == val)
+
+// Check expected value of STRING var (val is 'char*')
+#define EXPECT_VAR_STRING(var, val) \
+  do { \
+    EXPECT(var.type == PP_VARTYPE_STRING); \
+    uint32_t dummy_size; \
+    const char* expected = PPBVar()->VarToUtf8(var, &dummy_size); \
+    EXPECT(0 == strcmp(expected, val)); \
+  } while (0)
+
+// Check expected value of BOOL var.
+#define EXPECT_VAR_BOOL(var, val) \
+  EXPECT(var.type == PP_VARTYPE_BOOL && var.value.as_bool == val)
+
+// Use to report success.
+#define TEST_PASSED PostTestMessage(__FUNCTION__, "PASSED");
+// Or failure.
+#define TEST_FAILED EXPECT(false)
+
+// Handy for use with LOG_TO_BROWSER() convert arbitrary objects into strings.
+template<typename T> nacl::string toString(T v) {
+  std::stringstream s;
+  s << v;
+  return s.str();
+}
+
+// Log message for debugging or progress reporting purposes.
+// If you use this with  nacltest.js::expectMessageSequence
+// it will not interfere with output used for correctness checking.
+#define LOG_TO_BROWSER(message) PostTestMessage("@", message)
+
+// Cause a crash in a way that is guaranteed not to get optimized out by LLVM.
+#define CRASH *(volatile int *) 0 = 0;
+
+
+// Use this constant for stress testing
+// (i.e. creating and using a large number of resources).
+const int kManyResources = 1000;
+
+const PP_Instance kInvalidInstance = 0;
+const PP_Module kInvalidModule = 0;
+const PP_Resource kInvalidResource = 0;
+
+// These should not exist.
+// Chrome uses the bottom 2 bits to differentiate between different id types.
+// 00 - module, 01 - instance, 10 - resource, 11 - var.
+const PP_Instance kNotAnInstance = 0xFFFFF0;
+const PP_Resource kNotAResource = 0xAAAAA0;
+
+// Interface pointers and ids corresponding to this plugin;
+// set at initialization/creation.
+PP_Instance pp_instance();
+PP_Module pp_module();
+
+// If you are providing your own version of PPP_Instance::DidCreate
+// call this function to ensure proper test set-up.
+PP_Bool DidCreateDefault(PP_Instance instance,
+                         uint32_t argc, const char* argn[], const char* argv[]);
+
+#endif  // NATIVE_CLIENT_TESTS_PPAPI_TEST_PPB_TEMPLATE_TEST_INTERFACE_H