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// Copyright (c) 2013 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 "ppapi/shared_impl/unittest_utils.h"
#include <cmath>
#include "base/containers/hash_tables.h"
#include "base/logging.h"
#include "ipc/ipc_message.h"
#include "ppapi/shared_impl/array_var.h"
#include "ppapi/shared_impl/dictionary_var.h"
#include "ppapi/shared_impl/resource_var.h"
#include "ppapi/shared_impl/var.h"
#include "ppapi/shared_impl/var_tracker.h"
namespace ppapi {
namespace {
// When two vars x and y are found to be equal, an entry is inserted into
// |visited_map| with (x.value.as_id, y.value.as_id). This allows reference
// cycles to be avoided. It also allows us to associate nodes in |expected| with
// nodes in |actual| and check whether the graphs have equivalent topology.
bool Equals(const PP_Var& expected,
const PP_Var& actual,
base::hash_map<int64_t, int64_t>* visited_map) {
if (expected.type != actual.type) {
LOG(ERROR) << "expected type: " << expected.type <<
" actual type: " << actual.type;
return false;
}
if (VarTracker::IsVarTypeRefcounted(expected.type)) {
base::hash_map<int64_t, int64_t>::iterator it =
visited_map->find(expected.value.as_id);
if (it != visited_map->end()) {
if (it->second != actual.value.as_id) {
LOG(ERROR) << "expected id: " << it->second << " actual id: " <<
actual.value.as_id;
return false;
} else {
return true;
}
} else {
(*visited_map)[expected.value.as_id] = actual.value.as_id;
}
}
switch (expected.type) {
case PP_VARTYPE_UNDEFINED:
return true;
case PP_VARTYPE_NULL:
return true;
case PP_VARTYPE_BOOL:
if (expected.value.as_bool != actual.value.as_bool) {
LOG(ERROR) << "expected: " << expected.value.as_bool << " actual: " <<
actual.value.as_bool;
return false;
}
return true;
case PP_VARTYPE_INT32:
if (expected.value.as_int != actual.value.as_int) {
LOG(ERROR) << "expected: " << expected.value.as_int << " actual: " <<
actual.value.as_int;
return false;
}
return true;
case PP_VARTYPE_DOUBLE:
if (fabs(expected.value.as_double - actual.value.as_double) > 1.0e-4) {
LOG(ERROR) << "expected: " << expected.value.as_double <<
" actual: " << actual.value.as_double;
return false;
}
return true;
case PP_VARTYPE_OBJECT:
if (expected.value.as_id != actual.value.as_id) {
LOG(ERROR) << "expected: " << expected.value.as_id << " actual: " <<
actual.value.as_id;
return false;
}
return true;
case PP_VARTYPE_STRING: {
StringVar* expected_var = StringVar::FromPPVar(expected);
StringVar* actual_var = StringVar::FromPPVar(actual);
DCHECK(expected_var && actual_var);
if (expected_var->value() != actual_var->value()) {
LOG(ERROR) << "expected: " << expected_var->value() << " actual: " <<
actual_var->value();
return false;
}
return true;
}
case PP_VARTYPE_ARRAY_BUFFER: {
ArrayBufferVar* expected_var = ArrayBufferVar::FromPPVar(expected);
ArrayBufferVar* actual_var = ArrayBufferVar::FromPPVar(actual);
DCHECK(expected_var && actual_var);
if (expected_var->ByteLength() != actual_var->ByteLength()) {
LOG(ERROR) << "expected: " << expected_var->ByteLength() <<
" actual: " << actual_var->ByteLength();
return false;
}
if (memcmp(expected_var->Map(), actual_var->Map(),
expected_var->ByteLength()) != 0) {
LOG(ERROR) << "expected array buffer does not match actual.";
return false;
}
return true;
}
case PP_VARTYPE_ARRAY: {
ArrayVar* expected_var = ArrayVar::FromPPVar(expected);
ArrayVar* actual_var = ArrayVar::FromPPVar(actual);
DCHECK(expected_var && actual_var);
if (expected_var->elements().size() != actual_var->elements().size()) {
LOG(ERROR) << "expected: " << expected_var->elements().size() <<
" actual: " << actual_var->elements().size();
return false;
}
for (size_t i = 0; i < expected_var->elements().size(); ++i) {
if (!Equals(expected_var->elements()[i].get(),
actual_var->elements()[i].get(),
visited_map)) {
return false;
}
}
return true;
}
case PP_VARTYPE_DICTIONARY: {
DictionaryVar* expected_var = DictionaryVar::FromPPVar(expected);
DictionaryVar* actual_var = DictionaryVar::FromPPVar(actual);
DCHECK(expected_var && actual_var);
if (expected_var->key_value_map().size() !=
actual_var->key_value_map().size()) {
LOG(ERROR) << "expected: " << expected_var->key_value_map().size() <<
" actual: " << actual_var->key_value_map().size();
return false;
}
DictionaryVar::KeyValueMap::const_iterator expected_iter =
expected_var->key_value_map().begin();
DictionaryVar::KeyValueMap::const_iterator actual_iter =
actual_var->key_value_map().begin();
for ( ; expected_iter != expected_var->key_value_map().end();
++expected_iter, ++actual_iter) {
if (expected_iter->first != actual_iter->first) {
LOG(ERROR) << "expected: " << expected_iter->first <<
" actual: " << actual_iter->first;
return false;
}
if (!Equals(expected_iter->second.get(),
actual_iter->second.get(),
visited_map)) {
return false;
}
}
return true;
}
case PP_VARTYPE_RESOURCE: {
ResourceVar* expected_var = ResourceVar::FromPPVar(expected);
ResourceVar* actual_var = ResourceVar::FromPPVar(actual);
DCHECK(expected_var && actual_var);
if (expected_var->GetPPResource() != actual_var->GetPPResource()) {
LOG(ERROR) << "expected: " << expected_var->GetPPResource()
<< " actual: " << actual_var->GetPPResource();
return false;
}
const IPC::Message* actual_message = actual_var->GetCreationMessage();
const IPC::Message* expected_message =
expected_var->GetCreationMessage();
if (expected_message->size() != actual_message->size()) {
LOG(ERROR) << "expected creation message size: "
<< expected_message->size() << " actual: "
<< actual_message->size();
return false;
}
// Set the upper 24 bits of actual creation_message flags to the same as
// expected. This is an unpredictable reference number that changes
// between serialization/deserialization, and we do not want it to cause
// the comparison to fail.
IPC::Message local_actual_message(*actual_message);
local_actual_message.SetHeaderValues(
actual_message->routing_id(), actual_message->type(),
(expected_message->flags() & 0xffffff00) |
(actual_message->flags() & 0xff));
if (memcmp(expected_message->data(), local_actual_message.data(),
expected_message->size()) != 0) {
LOG(ERROR) << "expected creation message does not match actual.";
return false;
}
return true;
}
}
NOTREACHED();
return false;
}
} // namespace
bool TestEqual(const PP_Var& expected, const PP_Var& actual) {
base::hash_map<int64_t, int64_t> visited_map;
return Equals(expected, actual, &visited_map);
}
} // namespace ppapi
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