// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/tests/test_var.h"
#include <stdint.h>
#include <string.h>
#include <limits>
#include "ppapi/c/pp_var.h"
#include "ppapi/c/ppb_var.h"
#include "ppapi/cpp/instance.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/var.h"
#include "ppapi/tests/testing_instance.h"
namespace {
uint32_t kInvalidLength = static_cast<uint32_t>(-1);
} // namespace
REGISTER_TEST_CASE(Var);
bool TestVar::Init() {
var_interface_ = static_cast<const PPB_Var*>(
pp::Module::Get()->GetBrowserInterface(PPB_VAR_INTERFACE));
return var_interface_ && CheckTestingInterface();
}
void TestVar::RunTests(const std::string& filter) {
RUN_TEST(BasicString, filter);
RUN_TEST(InvalidAndEmpty, filter);
RUN_TEST(InvalidUtf8, filter);
RUN_TEST(NullInputInUtf8Conversion, filter);
RUN_TEST(ValidUtf8, filter);
RUN_TEST(Utf8WithEmbeddedNulls, filter);
RUN_TEST(VarToUtf8ForWrongType, filter);
}
std::string TestVar::TestBasicString() {
uint32_t before_object = testing_interface_->GetLiveObjectsForInstance(
instance_->pp_instance());
{
const char kStr[] = "Hello";
const uint32_t kStrLen(sizeof(kStr) - 1);
PP_Var str = var_interface_->VarFromUtf8(kStr, kStrLen);
ASSERT_EQ(PP_VARTYPE_STRING, str.type);
// Reading back the string should work.
uint32_t len = 0;
const char* result = var_interface_->VarToUtf8(str, &len);
ASSERT_EQ(kStrLen, len);
ASSERT_EQ(0, strncmp(kStr, result, kStrLen));
// Destroy the string, readback should now fail.
var_interface_->Release(str);
result = var_interface_->VarToUtf8(str, &len);
ASSERT_EQ(0, len);
ASSERT_EQ(NULL, result);
}
// Make sure we can assign a C++ object to itself and it stays alive.
{
pp::Var a("test");
a = *&a; // The *& defeats Clang's -Wself-assign warning.
ASSERT_TRUE(a.AsString() == "test");
}
// Make sure nothing leaked.
ASSERT_TRUE(testing_interface_->GetLiveObjectsForInstance(
instance_->pp_instance()) == before_object);
PASS();
}
std::string TestVar::TestInvalidAndEmpty() {
PP_Var invalid_string;
invalid_string.type = PP_VARTYPE_STRING;
invalid_string.value.as_id = 31415926;
// Invalid strings should give NULL as the return value.
uint32_t len = std::numeric_limits<uint32_t>::max();
const char* result = var_interface_->VarToUtf8(invalid_string, &len);
ASSERT_EQ(0, len);
ASSERT_EQ(NULL, result);
// Same with vars that are not strings.
len = std::numeric_limits<uint32_t>::max();
pp::Var int_var(42);
result = var_interface_->VarToUtf8(int_var.pp_var(), &len);
ASSERT_EQ(0, len);
ASSERT_EQ(NULL, result);
// Empty strings should return non-NULL.
pp::Var empty_string("");
len = std::numeric_limits<uint32_t>::max();
result = var_interface_->VarToUtf8(empty_string.pp_var(), &len);
ASSERT_EQ(0, len);
ASSERT_NE(NULL, result);
PASS();
}
std::string TestVar::TestInvalidUtf8() {
// utf8ăăăȘă (japanese for "is not utf8") in shift-jis encoding.
static const char kSjisString[] = "utf8\x82\xb6\x82\xe1\x82\xc8\x82\xa2";
pp::Var sjis(kSjisString);
if (!sjis.is_null())
return "Non-UTF8 string was permitted erroneously.";
PASS();
}
std::string TestVar::TestNullInputInUtf8Conversion() {
// This test talks directly to the C interface to access edge cases that
// cannot be exercised via the C++ interface.
PP_Var converted_string;
// 0-length string should not dereference input string, and should produce
// an empty string.
converted_string = var_interface_->VarFromUtf8(NULL, 0);
if (converted_string.type != PP_VARTYPE_STRING) {
return "Expected 0 length to return empty string.";
}
// Now convert it back.
uint32_t length = kInvalidLength;
const char* result = NULL;
result = var_interface_->VarToUtf8(converted_string, &length);
if (length != 0) {
return "Expected 0 length string on conversion.";
}
if (result == NULL) {
return "Expected a non-null result for 0-lengthed string from VarToUtf8.";
}
var_interface_->Release(converted_string);
// Should not crash, and make an empty string.
const char* null_string = NULL;
pp::Var null_var(null_string);
if (!null_var.is_string() || !null_var.AsString().empty()) {
return "Expected NULL input to make an empty string Var.";
}
PASS();
}
std::string TestVar::TestValidUtf8() {
// From UTF8 string -> PP_Var.
// Chinese for "I am utf8."
static const char kValidUtf8[] = "\xe6\x88\x91\xe6\x98\xafutf8.";
pp::Var converted_string(kValidUtf8);
if (converted_string.is_null())
return "Unable to convert valid utf8 to var.";
// Since we're already here, test PP_Var back to UTF8 string.
std::string returned_string = converted_string.AsString();
// We need to check against 1 less than sizeof because the resulting string
// is technically not NULL terminated by API design.
if (returned_string.size() != sizeof(kValidUtf8) - 1) {
return "Unable to convert utf8 string back from var.";
}
if (returned_string != kValidUtf8) {
return "String mismatches on conversion back from PP_Var.";
}
PASS();
}
std::string TestVar::TestUtf8WithEmbeddedNulls() {
// From UTF8 string with embedded nulls -> PP_Var.
// Chinese for "also utf8."
static const char kUtf8WithEmbededNull[] = "\xe6\xb9\x9f\xe6\x98\xaf\0utf8.";
std::string orig_string(kUtf8WithEmbededNull,
sizeof(kUtf8WithEmbededNull) -1);
pp::Var converted_string(orig_string);
if (converted_string.is_null())
return "Unable to convert utf8 with embedded nulls to var.";
// Since we're already here, test PP_Var back to UTF8 string.
std::string returned_string = converted_string.AsString();
if (returned_string.size() != orig_string.size()) {
return "Unable to convert utf8 with embedded nulls back from var.";
}
if (returned_string != orig_string) {
return "String mismatches on conversion back from PP_Var.";
}
PASS();
}
std::string TestVar::TestVarToUtf8ForWrongType() {
uint32_t length = kInvalidLength;
const char* result = NULL;
result = var_interface_->VarToUtf8(PP_MakeUndefined(), &length);
if (length != 0) {
return "Expected 0 on string conversion from Void var.";
}
if (result != NULL) {
return "Expected NULL on string conversion from Void var.";
}
length = kInvalidLength;
result = NULL;
result = var_interface_->VarToUtf8(PP_MakeNull(), &length);
if (length != 0) {
return "Expected 0 on string conversion from Null var.";
}
if (result != NULL) {
return "Expected NULL on string conversion from Null var.";
}
length = kInvalidLength;
result = NULL;
result = var_interface_->VarToUtf8(PP_MakeBool(PP_TRUE), &length);
if (length != 0) {
return "Expected 0 on string conversion from Bool var.";
}
if (result != NULL) {
return "Expected NULL on string conversion from Bool var.";
}
length = kInvalidLength;
result = NULL;
result = var_interface_->VarToUtf8(PP_MakeInt32(1), &length);
if (length != 0) {
return "Expected 0 on string conversion from Int32 var.";
}
if (result != NULL) {
return "Expected NULL on string conversion from Int32 var.";
}
length = kInvalidLength;
result = NULL;
result = var_interface_->VarToUtf8(PP_MakeDouble(1.0), &length);
if (length != 0) {
return "Expected 0 on string conversion from Double var.";
}
if (result != NULL) {
return "Expected NULL on string conversion from Double var.";
}
PASS();
}
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