Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/bindings/tests/serialization_api_unittest.cc

-// Copyright 2015 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 "gtest/gtest.h"
-#include "mojo/public/cpp/bindings/array.h"
-#include "mojo/public/cpp/bindings/lib/array_serialization.h"
-#include "mojo/public/cpp/bindings/lib/validation_errors.h"
-#include "mojo/public/cpp/system/message_pipe.h"
-#include "mojo/public/interfaces/bindings/tests/rect.mojom.h"
-#include "mojo/public/interfaces/bindings/tests/test_structs.mojom.h"
-
-namespace mojo {
-namespace test {
-namespace {
-
-class StructSerializationAPITest : public testing::Test {
- public:
-  // We Serialize and Deserialize the given |Type|, and expect the given
-  // serialization warnings.  We also validate (and expect a given error) in
-  // between serialization and deserialization.
-  template <typename Type>
-  void SerializeAndDeserialize(
-      Type* val,
-      mojo::internal::ValidationError expected_validation_error) {
-    size_t bytes_written = 0;
-    size_t num_bytes = val->GetSerializedSize();
-    std::vector<uint8_t> bytes(num_bytes + 1);
-
-    // Last byte is a magic value, helps catch a buffer overflow for
-    // serialization.
-    bytes[num_bytes] = 170;
-    val->Serialize(bytes.data(), num_bytes, &bytes_written);
-    EXPECT_EQ(170u, bytes[num_bytes]);
-    EXPECT_EQ(num_bytes, bytes_written);
-
-    mojo::internal::BoundsChecker bounds_checker(bytes.data(), num_bytes, 0);
-    auto actual_validation_error =
-        Type::Data_::Validate(bytes.data(), &bounds_checker, nullptr);
-    EXPECT_EQ(expected_validation_error, actual_validation_error);
-
-    Type out_val;
-    bool deserialize_ret = out_val.Deserialize(bytes.data(), bytes.size());
-    if (actual_validation_error == mojo::internal::ValidationError::NONE) {
-      EXPECT_TRUE(val->Equals(out_val));
-    }
-    EXPECT_EQ(actual_validation_error == mojo::internal::ValidationError::NONE,
-              deserialize_ret);
-  }
-};
-
-TEST_F(StructSerializationAPITest, GetSerializedSize) {
-  Rect rect;
-  // 8 byte struct header
-  // + 16 bytes worth of fields
-  EXPECT_EQ(24u, rect.GetSerializedSize());
-
-  HandleStruct handle_struct;
-  // 8 byte struct header
-  // + 4 byte handle
-  // + 8 bytes for offset/pointer for Array.
-  // + 0 bytes for uninitialized Array.
-  // + 4-byte to make the struct 8-byte aligned.
-  EXPECT_EQ(24u, handle_struct.GetSerializedSize());
-
-  // + 8 bytes for initialized array, 0-sized array.
-  handle_struct.array_h = mojo::Array<mojo::ScopedMessagePipeHandle>::New(0);
-  EXPECT_EQ(32u, handle_struct.GetSerializedSize());
-
-  // + 4 bytes for array of size 1.
-  // + 4 more bytes to make the array serialization 8-byte aligned.
-  handle_struct.array_h = mojo::Array<mojo::ScopedMessagePipeHandle>::New(1);
-  EXPECT_EQ(16u, GetSerializedSize_(handle_struct.array_h));
-  EXPECT_EQ(40u, handle_struct.GetSerializedSize());
-}
-
-TEST_F(StructSerializationAPITest, BasicStructSerialization) {
-  {
-    SCOPED_TRACE("Rect");
-    Rect rect;
-    rect.x = 123;
-    rect.y = 456;
-    rect.width = 789;
-    rect.height = 999;
-    SerializeAndDeserialize(&rect, mojo::internal::ValidationError::NONE);
-  }
-
-  {
-    SCOPED_TRACE("DefaultFieldValues");
-    DefaultFieldValues default_values;
-    SerializeAndDeserialize(&default_values,
-                            mojo::internal::ValidationError::NONE);
-  }
-
-  {
-    SCOPED_TRACE("NoDefaultFieldValues.Serialize() should fail");
-    NoDefaultFieldValues nd;
-    nd.f0 = true;
-    nd.f23 = mojo::Array<mojo::String>::New(10);
-
-    char buf[1000] = {};
-    EXPECT_FALSE(nd.Serialize(buf, sizeof(buf)));
-
-    size_t bytes_written = 0;
-    EXPECT_FALSE(nd.Serialize(buf, sizeof(buf), &bytes_written));
-    EXPECT_EQ(160UL, bytes_written);
-    // The Serialize() shouldn't get around to reserving space for the |f23|
-    // array field.
-    EXPECT_LT(bytes_written, nd.GetSerializedSize());
-  }
-}
-
-// This tests serialization of handles -- These should be deaths or
-TEST_F(StructSerializationAPITest, HandlesSerialization) {
-  {
-    SCOPED_TRACE("Uninitialized Array");
-    HandleStruct handle_struct;
-    // TODO(vardhan):  Once handles and pointers are encoded inline with
-    // serialization, validation should fail at
-    // ValidationError::UNEXPECTED_NULL_POINTER (which happens after the
-    // ValidationError::ILLEGAL_HANDLE error, which shouldn't happen since
-    // handles will be encoded even on failures).
-    SerializeAndDeserialize(&handle_struct,
-                            mojo::internal::ValidationError::ILLEGAL_HANDLE);
-  }
-
-  {
-    SCOPED_TRACE("Uninitialized required Handle in an Array");
-    HandleStruct handle_struct;
-    handle_struct.array_h = Array<mojo::ScopedMessagePipeHandle>::New(1);
-    // This won't die (i.e., we don't need to EXPECT_DEATH) because the handle
-    // is invalid, so should be serializable.  Instead, we live with a
-    // serialization error for an invalid handle.
-    // TODO(vardhan): This should be
-    // mojo::internal::ValidationError::UNEXPECTED_INVALID_HANDLE after handles
-    // are encoded inline with serialization.
-    SerializeAndDeserialize(&handle_struct,
-                            mojo::internal::ValidationError::ILLEGAL_HANDLE);
-  }
-
-  // We shouldn't be able to serialize a valid handle.
-  {
-    SCOPED_TRACE("Serializing a Handle");
-    HandleStruct handle_struct;
-    handle_struct.h = MessagePipe().handle0.Pass();
-    handle_struct.array_h = Array<mojo::ScopedMessagePipeHandle>::New(0);
-    EXPECT_DEATH_IF_SUPPORTED({
-      SerializeAndDeserialize(&handle_struct,
-                              mojo::internal::ValidationError::NONE);
-    }, "does not support handles");
-  }
-}
-
-// We should be able to Serialize/Deserialize a struct that has a nullable
-// handle which is null.
-TEST_F(StructSerializationAPITest, NullableHandleSerialization) {
-  NullableHandleStruct handle_struct;
-  handle_struct.data = 16;
-  SerializeAndDeserialize(&handle_struct,
-                          mojo::internal::ValidationError::NONE);
-}
-
-// Test that |Deserialize()| appropriately fails on validation.
-TEST_F(StructSerializationAPITest, DeserializationFailure) {
-  char buf[100] = {};
-  EmptyStruct es;
-
-  // Bounds checker should fail this, since buf_size is too small.
-  EXPECT_FALSE(es.Deserialize(buf, 1));
-
-  es.Serialize(buf, sizeof(buf));
-  EXPECT_TRUE(es.Deserialize(buf, sizeof(buf)));
-
-  // Invalid struct header: this should happen inside
-  // EmptyStruct::Data_::Validate()).
-  es.Serialize(buf, sizeof(buf));
-  EmptyStruct::Data_* es_data = reinterpret_cast<EmptyStruct::Data_*>(buf);
-  es_data->header_.num_bytes = 0;
-  EXPECT_FALSE(es.Deserialize(buf, sizeof(buf)));
-}
-
-TEST_F(StructSerializationAPITest, DeserializationWithoutValidation) {
-  const int32_t kMagic = 456;
-  char buf[100] = {};
-  ContainsOther::Data_* co_data = reinterpret_cast<ContainsOther::Data_*>(buf);
-  ContainsOther co;
-
-  // Success case.
-  co.other = kMagic;
-  EXPECT_TRUE(co.Serialize(buf, sizeof(buf)));
-  co.other = 0;
-  co.DeserializeWithoutValidation(buf);
-  EXPECT_EQ(kMagic, co.other);
-
-  // Invalid struct header, but will pass (i.e., won't crash) anyway because we
-  // don't Validate.
-  co_data->header_.num_bytes = 0u;
-  co.DeserializeWithoutValidation(buf);
-  EXPECT_EQ(kMagic, co_data->other);
-  EXPECT_EQ(0u, co_data->header_.num_bytes);
-}
-
-}  // namespace
-}  // namespace test
-}  // namespace mojo