Remove requirement that mojo::Environment be instantiated.

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

 // Copyright 2014 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 <utility>
 #include <vector>
 
 #include "mojo/public/cpp/bindings/array.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/lib/array_internal.h"
 #include "mojo/public/cpp/bindings/lib/array_serialization.h"
 #include "mojo/public/cpp/bindings/lib/bounds_checker.h"
 #include "mojo/public/cpp/bindings/lib/fixed_buffer.h"
 #include "mojo/public/cpp/bindings/lib/map_serialization.h"
 #include "mojo/public/cpp/bindings/string.h"
-#include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/test_support/test_utils.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 #include "mojo/public/interfaces/bindings/tests/test_structs.mojom.h"
 #include "mojo/public/interfaces/bindings/tests/test_unions.mojom.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace test {
 
 TEST(UnionTest, PlainOldDataGetterSetter) {
@@ skipping 194 matching lines @@
 
 TEST(UnionTest, NullValidation) {
   void* buf = nullptr;
   mojo::internal::BoundsChecker bounds_checker(buf, 0, 0);
   EXPECT_EQ(
       mojo::internal::ValidationError::NONE,
       internal::PodUnion_Data::Validate(buf, &bounds_checker, false, nullptr));
 }
 
 TEST(UnionTest, OutOfAlignmentValidation) {
-  Environment environment;
   size_t size = sizeof(internal::PodUnion_Data);
   // Get an aligned object and shift the alignment.
   mojo::internal::FixedBufferForTesting aligned_buf(size + 1);
   void* raw_buf = aligned_buf.Leak();
   char* buf = reinterpret_cast<char*>(raw_buf) + 1;
 
   internal::PodUnion_Data* data =
       reinterpret_cast<internal::PodUnion_Data*>(buf);
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_NE(
       mojo::internal::ValidationError::NONE,
       internal::PodUnion_Data::Validate(buf, &bounds_checker, false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, OOBValidation) {
-  Environment environment;
   size_t size = sizeof(internal::PodUnion_Data) - 1;
   mojo::internal::FixedBufferForTesting buf(size);
   internal::PodUnion_Data* data = internal::PodUnion_Data::New(&buf);
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   void* raw_buf = buf.Leak();
   EXPECT_NE(mojo::internal::ValidationError::NONE,
             internal::PodUnion_Data::Validate(raw_buf, &bounds_checker, false,
                                               nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, UnknownTagDeserialization) {
-  Environment environment;
   size_t size = sizeof(internal::PodUnion_Data);
   mojo::internal::FixedBufferForTesting buf(size);
   internal::PodUnion_Data* data = internal::PodUnion_Data::New(&buf);
   data->size = size;
   data->tag = static_cast<internal::PodUnion_Data::PodUnion_Tag>(100);
 
   PodUnionPtr pod2 = PodUnion::New();
   Deserialize_(data, pod2.get());
 
   EXPECT_TRUE(pod2->has_unknown_tag());
 }
 
 TEST(UnionTest, UnknownTagValidation) {
-  Environment environment;
   size_t size = sizeof(internal::PodUnion_Data);
   mojo::internal::FixedBufferForTesting buf(size);
   internal::PodUnion_Data* data = internal::PodUnion_Data::New(&buf);
   data->size = size;
   data->tag = static_cast<internal::PodUnion_Data::PodUnion_Tag>(100);
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   void* raw_buf = buf.Leak();
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             internal::PodUnion_Data::Validate(raw_buf, &bounds_checker, false,
@@ skipping 50 matching lines @@
   data->DecodePointersAndHandles(&handles);
 
   ObjectUnionPtr pod2 = ObjectUnion::New();
   Deserialize_(data, pod2.get());
   EXPECT_EQ(hello, pod2->get_f_string());
   EXPECT_TRUE(pod2->is_f_string());
   EXPECT_EQ(pod2->which(), ObjectUnion::Tag::F_STRING);
 }
 
 TEST(UnionTest, NullStringValidation) {
-  Environment environment;
   size_t size = sizeof(internal::ObjectUnion_Data);
   mojo::internal::FixedBufferForTesting buf(size);
   internal::ObjectUnion_Data* data = internal::ObjectUnion_Data::New(&buf);
   data->size = 16;
   data->tag = internal::ObjectUnion_Data::ObjectUnion_Tag::F_STRING;
   data->data.unknown = 0x0;
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   void* raw_buf = buf.Leak();
   EXPECT_NE(mojo::internal::ValidationError::NONE,
             internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, StringPointerOverflowValidation) {
-  Environment environment;
   size_t size = sizeof(internal::ObjectUnion_Data);
   mojo::internal::FixedBufferForTesting buf(size);
   internal::ObjectUnion_Data* data = internal::ObjectUnion_Data::New(&buf);
   data->size = 16;
   data->tag = internal::ObjectUnion_Data::ObjectUnion_Tag::F_STRING;
   data->data.unknown = 0xFFFFFFFFFFFFFFFF;
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   void* raw_buf = buf.Leak();
   EXPECT_NE(mojo::internal::ValidationError::NONE,
             internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, StringValidateOOB) {
-  Environment environment;
   size_t size = 32;
   mojo::internal::FixedBufferForTesting buf(size);
   internal::ObjectUnion_Data* data = internal::ObjectUnion_Data::New(&buf);
   data->size = 16;
   data->tag = internal::ObjectUnion_Data::ObjectUnion_Tag::F_STRING;
 
   data->data.f_f_string.offset = 8;
   char* ptr = reinterpret_cast<char*>(&data->data.f_f_string);
   mojo::internal::ArrayHeader* array_header =
       reinterpret_cast<mojo::internal::ArrayHeader*>(ptr + *ptr);
@@ skipping 16 matching lines @@
   small_struct->pod_union_array[1] = PodUnion::New();
 
   small_struct->pod_union_array[0]->set_f_int8(10);
   small_struct->pod_union_array[1]->set_f_int16(12);
 
   EXPECT_EQ(10, small_struct->pod_union_array[0]->get_f_int8());
   EXPECT_EQ(12, small_struct->pod_union_array[1]->get_f_int16());
 }
 
 TEST(UnionTest, PodUnionInArraySerialization) {
-  Environment environment;
   auto array = Array<PodUnionPtr>::New(2);
   array[0] = PodUnion::New();
   array[1] = PodUnion::New();
 
   array[0]->set_f_int8(10);
   array[1]->set_f_int16(12);
   EXPECT_EQ(2U, array.size());
 
   size_t size = GetSerializedSize_(array);
   EXPECT_EQ(40U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   mojo::internal::Array_Data<internal::PodUnion_Data>* data = nullptr;
   mojo::internal::ArrayValidateParams validate_params(0, false, nullptr);
   SerializeArray_(&array, &buf, &data, &validate_params);
 
   Array<PodUnionPtr> array2;
   Deserialize_(data, &array2);
 
   EXPECT_EQ(2U, array2.size());
 
   EXPECT_EQ(10, array2[0]->get_f_int8());
   EXPECT_EQ(12, array2[1]->get_f_int16());
 }
 
 TEST(UnionTest, PodUnionInArrayValidation) {
-  Environment environment;
   auto array = Array<PodUnionPtr>::New(2);
   array[0] = PodUnion::New();
   array[1] = PodUnion::New();
 
   array[0]->set_f_int8(10);
   array[1]->set_f_int16(12);
 
   size_t size = GetSerializedSize_(array);
 
   mojo::internal::FixedBufferForTesting buf(size);
   mojo::internal::Array_Data<internal::PodUnion_Data>* data = nullptr;
   mojo::internal::ArrayValidateParams validate_params(0, false, nullptr);
   SerializeArray_(&array, &buf, &data, &validate_params);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   EXPECT_TRUE(handles.empty());
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 1);
 
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             Array<PodUnionPtr>::Data_::Validate(raw_buf, &bounds_checker,
                                                 &validate_params, nullptr));
   free(raw_buf);
 }
 TEST(UnionTest, PodUnionInArraySerializationWithNull) {
-  Environment environment;
   auto array = Array<PodUnionPtr>::New(2);
   array[0] = PodUnion::New();
 
   array[0]->set_f_int8(10);
   EXPECT_EQ(2U, array.size());
 
   size_t size = GetSerializedSize_(array);
   EXPECT_EQ(40U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   mojo::internal::Array_Data<internal::PodUnion_Data>* data = nullptr;
   mojo::internal::ArrayValidateParams validate_params(0, true, nullptr);
   SerializeArray_(&array, &buf, &data, &validate_params);
 
   Array<PodUnionPtr> array2;
   Deserialize_(data, &array2);
 
   EXPECT_EQ(2U, array2.size());
 
   EXPECT_EQ(10, array2[0]->get_f_int8());
   EXPECT_TRUE(array2[1].is_null());
 }
 
 // TODO(azani): Move back in struct_unittest.cc when possible.
 // Struct tests
 TEST(UnionTest, Clone_Union) {
-  Environment environment;
   SmallStructPtr small_struct(SmallStruct::New());
   small_struct->pod_union = PodUnion::New();
   small_struct->pod_union->set_f_int8(10);
 
   SmallStructPtr clone = small_struct.Clone();
   EXPECT_EQ(10, clone->pod_union->get_f_int8());
 }
 
 // Serialization test of a struct with a union of plain old data.
 TEST(UnionTest, Serialization_UnionOfPods) {
-  Environment environment;
   SmallStructPtr small_struct(SmallStruct::New());
   small_struct->pod_union = PodUnion::New();
   small_struct->pod_union->set_f_int32(10);
 
   size_t size = GetSerializedSize_(*small_struct);
 
   mojo::internal::FixedBufferForTesting buf(size);
   internal::SmallStruct_Data* data = nullptr;
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             Serialize_(small_struct.get(), &buf, &data));
 
   SmallStructPtr deserialized(SmallStruct::New());
   Deserialize_(data, deserialized.get());
 
   EXPECT_EQ(10, deserialized->pod_union->get_f_int32());
 }
 
 // Serialization test of a struct with a union of structs.
 TEST(UnionTest, Serialization_UnionOfObjects) {
-  Environment environment;
   SmallObjStructPtr obj_struct(SmallObjStruct::New());
   obj_struct->obj_union = ObjectUnion::New();
   String hello("hello world");
   obj_struct->obj_union->set_f_string(hello);
 
   size_t size = GetSerializedSize_(*obj_struct);
 
   mojo::internal::FixedBufferForTesting buf(size);
   internal::SmallObjStruct_Data* data = nullptr;
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             Serialize_(obj_struct.get(), &buf, &data));
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   data->DecodePointersAndHandles(&handles);
 
   SmallObjStructPtr deserialized(SmallObjStruct::New());
   Deserialize_(data, deserialized.get());
 
   EXPECT_EQ(hello, deserialized->obj_union->get_f_string());
 }
 
 // Validation test of a struct with a union.
 TEST(UnionTest, Validation_UnionsInStruct) {
-  Environment environment;
   SmallStructPtr small_struct(SmallStruct::New());
   small_struct->pod_union = PodUnion::New();
   small_struct->pod_union->set_f_int32(10);
 
   size_t size = GetSerializedSize_(*small_struct);
 
   mojo::internal::FixedBufferForTesting buf(size);
   internal::SmallStruct_Data* data = nullptr;
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             Serialize_(small_struct.get(), &buf, &data));
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   EXPECT_TRUE(handles.empty());
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_EQ(
       mojo::internal::ValidationError::NONE,
       internal::SmallStruct_Data::Validate(raw_buf, &bounds_checker, nullptr));
   free(raw_buf);
 }
 
 // Validation test of a struct union fails due to unknown union tag.
 TEST(UnionTest, Validation_PodUnionInStruct_Failure) {
-  Environment environment;
   SmallStructPtr small_struct(SmallStruct::New());
   small_struct->pod_union = PodUnion::New();
   small_struct->pod_union->set_f_int32(10);
 
   size_t size = GetSerializedSize_(*small_struct);
 
   mojo::internal::FixedBufferForTesting buf(size);
   internal::SmallStruct_Data* data = nullptr;
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             Serialize_(small_struct.get(), &buf, &data));
   data->pod_union.tag = static_cast<internal::PodUnion_Data::PodUnion_Tag>(100);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   EXPECT_TRUE(handles.empty());
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_EQ(
       mojo::internal::ValidationError::NONE,
       internal::SmallStruct_Data::Validate(raw_buf, &bounds_checker, nullptr));
   free(raw_buf);
 }
 
 // Validation fails due to non-nullable null union in struct.
 TEST(UnionTest, Validation_NullUnion_Failure) {
-  Environment environment;
   SmallStructNonNullableUnionPtr small_struct(
       SmallStructNonNullableUnion::New());
 
   size_t size = GetSerializedSize_(*small_struct);
 
   mojo::internal::FixedBufferForTesting buf(size);
   internal::SmallStructNonNullableUnion_Data* data =
       internal::SmallStructNonNullableUnion_Data::New(&buf);
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_NE(mojo::internal::ValidationError::NONE,
             internal::SmallStructNonNullableUnion_Data::Validate(
                 raw_buf, &bounds_checker, nullptr));
   free(raw_buf);
 }
 
 // Validation passes with nullable null union.
 TEST(UnionTest, Validation_NullableUnion) {
-  Environment environment;
   SmallStructPtr small_struct(SmallStruct::New());
 
   size_t size = GetSerializedSize_(*small_struct);
 
   mojo::internal::FixedBufferForTesting buf(size);
   internal::SmallStruct_Data* data = nullptr;
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             Serialize_(small_struct.get(), &buf, &data));
 
   std::vector<Handle> handles;
@@ skipping 17 matching lines @@
   small_struct->Serialize(buf, sizeof(buf));
   EXPECT_TRUE(small_struct->pod_union.is_null());
 
   SmallStructPtr deserialized_struct = SmallStruct::New();
   EXPECT_TRUE(deserialized_struct->Deserialize(buf, sizeof(buf)));
   EXPECT_TRUE(deserialized_struct->pod_union.is_null());
 }
 
 // Validation passes with nullable null union containing non-nullable objects.
 TEST(UnionTest, Validation_NullableObjectUnion) {
-  Environment environment;
   StructNullObjectUnionPtr small_struct(StructNullObjectUnion::New());
 
   size_t size = GetSerializedSize_(*small_struct);
 
   mojo::internal::FixedBufferForTesting buf(size);
   internal::StructNullObjectUnion_Data* data = nullptr;
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             Serialize_(small_struct.get(), &buf, &data));
 
   std::vector<Handle> handles;
@@ skipping 18 matching lines @@
   small_struct->pod_union_map.insert("two", PodUnion::New());
 
   small_struct->pod_union_map["one"]->set_f_int8(8);
   small_struct->pod_union_map["two"]->set_f_int16(16);
 
   EXPECT_EQ(8, small_struct->pod_union_map["one"]->get_f_int8());
   EXPECT_EQ(16, small_struct->pod_union_map["two"]->get_f_int16());
 }
 
 TEST(UnionTest, PodUnionInMapSerialization) {
-  Environment environment;
   Map<String, PodUnionPtr> map;
   map.insert("one", PodUnion::New());
   map.insert("two", PodUnion::New());
 
   map["one"]->set_f_int8(8);
   map["two"]->set_f_int16(16);
 
   size_t size = GetSerializedSize_(map);
   EXPECT_EQ(120U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   mojo::internal::Map_Data<mojo::internal::String_Data*,
                            internal::PodUnion_Data>* data = nullptr;
   mojo::internal::ArrayValidateParams validate_params(0, false, nullptr);
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             SerializeMap_(&map, &buf, &data, &validate_params));
 
   Map<String, PodUnionPtr> map2;
   Deserialize_(data, &map2);
 
   EXPECT_EQ(8, map2["one"]->get_f_int8());
   EXPECT_EQ(16, map2["two"]->get_f_int16());
 }
 
 TEST(UnionTest, PodUnionInMapSerializationWithNull) {
-  Environment environment;
   Map<String, PodUnionPtr> map;
   map.insert("one", PodUnion::New());
   map.insert("two", nullptr);
 
   map["one"]->set_f_int8(8);
 
   size_t size = GetSerializedSize_(map);
   EXPECT_EQ(120U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
@@ skipping 14 matching lines @@
   DummyStructPtr dummy(DummyStruct::New());
   dummy->f_int8 = 8;
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_dummy(dummy.Pass());
 
   EXPECT_EQ(8, obj->get_f_dummy()->f_int8);
 }
 
 TEST(UnionTest, StructInUnionSerialization) {
-  Environment environment;
   DummyStructPtr dummy(DummyStruct::New());
   dummy->f_int8 = 8;
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_dummy(dummy.Pass());
 
   size_t size = GetSerializedSize_(obj);
   EXPECT_EQ(32U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   data->DecodePointersAndHandles(&handles);
 
   ObjectUnionPtr obj2 = ObjectUnion::New();
   Deserialize_(data, obj2.get());
   EXPECT_EQ(8, obj2->get_f_dummy()->f_int8);
 }
 
 TEST(UnionTest, StructInUnionValidation) {
-  Environment environment;
   DummyStructPtr dummy(DummyStruct::New());
   dummy->f_int8 = 8;
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_dummy(dummy.Pass());
 
   size_t size = GetSerializedSize_(obj);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   EXPECT_TRUE(handles.empty());
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, StructInUnionValidationNonNullable) {
-  Environment environment;
   DummyStructPtr dummy(nullptr);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_dummy(dummy.Pass());
 
   size_t size = GetSerializedSize_(obj);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   EXPECT_TRUE(handles.empty());
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_NE(mojo::internal::ValidationError::NONE,
             internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, StructInUnionValidationNullable) {
-  Environment environment;
   DummyStructPtr dummy(nullptr);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_nullable(dummy.Pass());
 
   size_t size = GetSerializedSize_(obj);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   EXPECT_TRUE(handles.empty());
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, ArrayInUnionGetterSetter) {
-  Environment environment;
-
   auto array = Array<int8_t>::New(2);
   array[0] = 8;
   array[1] = 9;
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_array_int8(array.Pass());
 
   EXPECT_EQ(8, obj->get_f_array_int8()[0]);
   EXPECT_EQ(9, obj->get_f_array_int8()[1]);
 }
 
 TEST(UnionTest, ArrayInUnionSerialization) {
-  Environment environment;
-
   auto array = Array<int8_t>::New(2);
   array[0] = 8;
   array[1] = 9;
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_array_int8(array.Pass());
 
   size_t size = GetSerializedSize_(obj);
   EXPECT_EQ(32U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   data->DecodePointersAndHandles(&handles);
 
   ObjectUnionPtr obj2 = ObjectUnion::New();
   Deserialize_(data, obj2.get());
 
   EXPECT_EQ(8, obj2->get_f_array_int8()[0]);
   EXPECT_EQ(9, obj2->get_f_array_int8()[1]);
 }
 
 TEST(UnionTest, ArrayInUnionValidation) {
-  Environment environment;
-
   auto array = Array<int8_t>::New(2);
   array[0] = 8;
   array[1] = 9;
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_array_int8(array.Pass());
 
   size_t size = GetSerializedSize_(obj);
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   EXPECT_TRUE(handles.empty());
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
 
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, MapInUnionGetterSetter) {
-  Environment environment;
   Map<String, int8_t> map;
   map.insert("one", 1);
   map.insert("two", 2);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_map_int8(map.Pass());
 
   EXPECT_EQ(1, obj->get_f_map_int8()["one"]);
   EXPECT_EQ(2, obj->get_f_map_int8()["two"]);
 }
 
 TEST(UnionTest, MapInUnionSerialization) {
-  Environment environment;
   Map<String, int8_t> map;
   map.insert("one", 1);
   map.insert("two", 2);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_map_int8(map.Pass());
 
   size_t size = GetSerializedSize_(obj);
   EXPECT_EQ(112U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   data->DecodePointersAndHandles(&handles);
 
   ObjectUnionPtr obj2 = ObjectUnion::New();
   Deserialize_(data, obj2.get());
 
   EXPECT_EQ(1, obj2->get_f_map_int8()["one"]);
   EXPECT_EQ(2, obj2->get_f_map_int8()["two"]);
 }
 
 TEST(UnionTest, MapInUnionValidation) {
-  Environment environment;
   Map<String, int8_t> map;
   map.insert("one", 1);
   map.insert("two", 2);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_map_int8(map.Pass());
 
   size_t size = GetSerializedSize_(obj);
   EXPECT_EQ(112U, size);
 
@@ skipping 19 matching lines @@
   PodUnionPtr pod(PodUnion::New());
   pod->set_f_int8(10);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_pod_union(pod.Pass());
 
   EXPECT_EQ(10, obj->get_f_pod_union()->get_f_int8());
 }
 
 TEST(UnionTest, UnionInUnionSerialization) {
-  Environment environment;
   PodUnionPtr pod(PodUnion::New());
   pod->set_f_int8(10);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_pod_union(pod.Pass());
 
   size_t size = GetSerializedSize_(obj);
   EXPECT_EQ(32U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
   data->DecodePointersAndHandles(&handles);
 
   ObjectUnionPtr obj2 = ObjectUnion::New();
   Deserialize_(data, obj2.get());
   EXPECT_EQ(10, obj2->get_f_pod_union()->get_f_int8());
 }
 
 TEST(UnionTest, UnionInUnionValidation) {
-  Environment environment;
   PodUnionPtr pod(PodUnion::New());
   pod->set_f_int8(10);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_pod_union(pod.Pass());
 
   size_t size = GetSerializedSize_(obj);
   EXPECT_EQ(32U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 0);
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, UnionInUnionValidationNonNullable) {
-  Environment environment;
   PodUnionPtr pod(nullptr);
 
   ObjectUnionPtr obj(ObjectUnion::New());
   obj->set_f_pod_union(pod.Pass());
 
   size_t size = GetSerializedSize_(obj);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::ObjectUnion_Data::New(&buf);
   SerializeUnion_(obj.get(), &buf, &data);
@@ skipping 54 matching lines @@
   std::string golden("hello world");
   WriteTextMessage(pipe0.get(), golden);
 
   std::string actual;
   ReadTextMessage(handle2->get_f_message_pipe().get(), &actual);
 
   EXPECT_EQ(golden, actual);
 }
 
 TEST(UnionTest, HandleInUnionValidation) {
-  Environment environment;
   ScopedMessagePipeHandle pipe0;
   ScopedMessagePipeHandle pipe1;
 
   CreateMessagePipe(nullptr, &pipe0, &pipe1);
 
   HandleUnionPtr handle(HandleUnion::New());
   handle->set_f_message_pipe(pipe1.Pass());
 
   size_t size = GetSerializedSize_(handle);
   EXPECT_EQ(16U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::HandleUnion_Data::New(&buf);
   SerializeUnion_(handle.get(), &buf, &data);
 
   std::vector<Handle> handles;
   data->EncodePointersAndHandles(&handles);
 
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data,
                                                static_cast<uint32_t>(size), 1);
   EXPECT_EQ(mojo::internal::ValidationError::NONE,
             internal::HandleUnion_Data::Validate(raw_buf, &bounds_checker,
                                                  false, nullptr));
   free(raw_buf);
 }
 
 TEST(UnionTest, HandleInUnionValidationNull) {
-  Environment environment;
   ScopedMessagePipeHandle pipe;
   HandleUnionPtr handle(HandleUnion::New());
   handle->set_f_message_pipe(pipe.Pass());
 
   size_t size = GetSerializedSize_(handle);
   EXPECT_EQ(16U, size);
 
   mojo::internal::FixedBufferForTesting buf(size);
   auto* data = internal::HandleUnion_Data::New(&buf);
   SerializeUnion_(handle.get(), &buf, &data);
@@ skipping 19 matching lines @@
  private:
   void SetIntValue(int64_t int_value) override { int_value_ = int_value; }
   void GetIntValue(const GetIntValueCallback& callback) override {
     callback.Run(int_value_);
   }
 
   int64_t int_value_;
 };
 
 TEST(UnionTest, InterfaceInUnion) {
-  Environment env;
   RunLoop run_loop;
   SmallCacheImpl impl;
   SmallCachePtr ptr;
   Binding<SmallCache> bindings(&impl, GetProxy(&ptr));
 
   HandleUnionPtr handle(HandleUnion::New());
   handle->set_f_small_cache(ptr.Pass());
 
   auto small_cache =
       SmallCachePtr::Create(std::move(handle->get_f_small_cache()));
   small_cache->SetIntValue(10);
   run_loop.RunUntilIdle();
   EXPECT_EQ(10, impl.int_value());
 }
 
 TEST(UnionTest, InterfaceInUnionSerialization) {
-  Environment env;
   RunLoop run_loop;
   SmallCacheImpl impl;
   SmallCachePtr ptr;
   Binding<SmallCache> bindings(&impl, GetProxy(&ptr));
 
   HandleUnionPtr handle(HandleUnion::New());
   handle->set_f_small_cache(ptr.Pass());
   size_t size = GetSerializedSize_(handle);
   EXPECT_EQ(16U, size);
 
@@ skipping 21 matching lines @@
   UnionInterfaceImpl() {}
   ~UnionInterfaceImpl() override {}
 
  private:
   void Echo(PodUnionPtr in, const EchoCallback& callback) override {
     callback.Run(in.Pass());
   }
 };
 
 TEST(UnionTest, UnionInInterface) {
-  Environment env;
   RunLoop run_loop;
   UnionInterfaceImpl impl;
   UnionInterfacePtr ptr;
   Binding<UnionInterface> bindings(&impl, GetProxy(&ptr));
 
   PodUnionPtr pod(PodUnion::New());
   pod->set_f_int16(16);
 
   ptr->Echo(pod.Pass(),
             [](PodUnionPtr out) { EXPECT_EQ(16, out->get_f_int16()); });
   run_loop.RunUntilIdle();
 }
 
 }  // namespace test
 }  // namespace mojo