Implement unions as members of structs.

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

Index: mojo/public/cpp/bindings/tests/union_unittest.cc
diff --git a/mojo/public/cpp/bindings/tests/union_unittest.cc b/mojo/public/cpp/bindings/tests/union_unittest.cc
index f811a22a85cef5d8bc485a75f3497b541318d8f1..df68254ebf472244ccaded6d410f86f12156c102 100644
--- a/mojo/public/cpp/bindings/tests/union_unittest.cc
+++ b/mojo/public/cpp/bindings/tests/union_unittest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#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/string.h"
@@ -108,7 +110,7 @@ TEST(UnionTest, SerializationPod) {
   EXPECT_EQ(16U, size);
 
   mojo::internal::FixedBuffer buf(size);
-  internal::PodUnion_Data* data;
+  internal::PodUnion_Data* data = nullptr;
   Serialize_(pod1.Pass(), &buf, &data);
 
   PodUnionPtr pod2;
@@ -119,7 +121,7 @@ TEST(UnionTest, SerializationPod) {
   EXPECT_EQ(pod2->which(), PodUnion::Tag::F_INT8);
 }
 
-TEST(UnionTest, ValidationJustWorksPod) {
+TEST(UnionTest, PodValidation) {
   PodUnionPtr pod(PodUnion::New());
   pod->set_f_int8(10);
 
@@ -127,18 +129,43 @@ TEST(UnionTest, ValidationJustWorksPod) {
   EXPECT_EQ(16U, size);
 
   mojo::internal::FixedBuffer buf(size);
-  internal::PodUnion_Data* data;
+  internal::PodUnion_Data* data = nullptr;
   Serialize_(pod.Pass(), &buf, &data);
   void* raw_buf = buf.Leak();
   mojo::internal::BoundsChecker bounds_checker(data, size, 0);
-  EXPECT_TRUE(internal::PodUnion_Data::Validate(raw_buf, &bounds_checker));
+  EXPECT_TRUE(
+      internal::PodUnion_Data::Validate(raw_buf, &bounds_checker, false));
   free(raw_buf);
 }
 
+TEST(UnionTest, SerializeNotNull) {
+  PodUnionPtr pod(PodUnion::New());
+  pod->set_f_int8(0);
+  size_t size = GetSerializedSize_(pod);
+  mojo::internal::FixedBuffer buf(size);
+  internal::PodUnion_Data* data = nullptr;
+  Serialize_(pod.Pass(), &buf, &data);
+  EXPECT_FALSE(data->is_null());
+}
+
+TEST(UnionTest, SerializeIsNull) {
+  PodUnionPtr pod;
+  size_t size = GetSerializedSize_(pod);
+  EXPECT_EQ(16U, size);
+  mojo::internal::FixedBuffer buf(size);
+  internal::PodUnion_Data* data = nullptr;
+  Serialize_(pod.Pass(), &buf, &data);
+  EXPECT_TRUE(data->is_null());
+
+  PodUnionPtr pod2;
+  Deserialize_(data, &pod2);
+  EXPECT_TRUE(pod2.is_null());
+}
+
 TEST(UnionTest, NullValidation) {
   void* buf = nullptr;
   mojo::internal::BoundsChecker bounds_checker(buf, 0, 0);
-  EXPECT_TRUE(internal::PodUnion_Data::Validate(buf, &bounds_checker));
+  EXPECT_TRUE(internal::PodUnion_Data::Validate(buf, &bounds_checker, false));
 }
 
 TEST(UnionTest, OutOfAlignmentValidation) {
@@ -152,7 +179,7 @@ TEST(UnionTest, OutOfAlignmentValidation) {
   internal::PodUnion_Data* data =
       reinterpret_cast<internal::PodUnion_Data*>(buf);
   mojo::internal::BoundsChecker bounds_checker(data, size, 0);
-  EXPECT_FALSE(internal::PodUnion_Data::Validate(buf, &bounds_checker));
+  EXPECT_FALSE(internal::PodUnion_Data::Validate(buf, &bounds_checker, false));
   free(raw_buf);
 }
 
@@ -163,7 +190,8 @@ TEST(UnionTest, OOBValidation) {
   internal::PodUnion_Data* data = internal::PodUnion_Data::New(&buf);
   mojo::internal::BoundsChecker bounds_checker(data, size, 0);
   void* raw_buf = buf.Leak();
-  EXPECT_FALSE(internal::PodUnion_Data::Validate(raw_buf, &bounds_checker));
+  EXPECT_FALSE(
+      internal::PodUnion_Data::Validate(raw_buf, &bounds_checker, false));
   free(raw_buf);
 }
 
@@ -175,7 +203,8 @@ TEST(UnionTest, UnknownTagValidation) {
   data->tag = static_cast<internal::PodUnion_Data::PodUnion_Tag>(0xFFFFFF);
   mojo::internal::BoundsChecker bounds_checker(data, size, 0);
   void* raw_buf = buf.Leak();
-  EXPECT_FALSE(internal::PodUnion_Data::Validate(raw_buf, &bounds_checker));
+  EXPECT_FALSE(
+      internal::PodUnion_Data::Validate(raw_buf, &bounds_checker, false));
   free(raw_buf);
 }
 
@@ -220,7 +249,7 @@ TEST(UnionTest, StringSerialization) {
 
   size_t size = GetSerializedSize_(pod1);
   mojo::internal::FixedBuffer buf(size);
-  internal::ObjectUnion_Data* data;
+  internal::ObjectUnion_Data* data = nullptr;
   Serialize_(pod1.Pass(), &buf, &data);
 
   ObjectUnionPtr pod2;
@@ -230,7 +259,7 @@ TEST(UnionTest, StringSerialization) {
   EXPECT_EQ(pod2->which(), ObjectUnion::Tag::F_STRING);
 }
 
-TEST(UnionTest, StringValidationNull) {
+TEST(UnionTest, NullStringValidation) {
   Environment environment;
   size_t size = sizeof(internal::ObjectUnion_Data);
   mojo::internal::FixedBuffer buf(size);
@@ -239,11 +268,12 @@ TEST(UnionTest, StringValidationNull) {
   data->data.unknown = 0x0;
   mojo::internal::BoundsChecker bounds_checker(data, size, 0);
   void* raw_buf = buf.Leak();
-  EXPECT_FALSE(internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker));
+  EXPECT_FALSE(
+      internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker, false));
   free(raw_buf);
 }
 
-TEST(UnionTest, StringValidationPointerOverflow) {
+TEST(UnionTest, StringPointerOverflowValidation) {
   Environment environment;
   size_t size = sizeof(internal::ObjectUnion_Data);
   mojo::internal::FixedBuffer buf(size);
@@ -252,11 +282,12 @@ TEST(UnionTest, StringValidationPointerOverflow) {
   data->data.unknown = 0xFFFFFFFFFFFFFFFF;
   mojo::internal::BoundsChecker bounds_checker(data, size, 0);
   void* raw_buf = buf.Leak();
-  EXPECT_FALSE(internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker));
+  EXPECT_FALSE(
+      internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker, false));
   free(raw_buf);
 }
 
-TEST(UnionTest, StringValidationValidateString) {
+TEST(UnionTest, StringValidateStringValidation) {

[yzshen1, 2015/02/25 21:07:00]

nit: I cannot parse this test name...

[azani, 2015/03/03 00:44:15]

Done.

   Environment environment;
   size_t size = 32;
   mojo::internal::FixedBuffer buf(size);
@@ -271,8 +302,217 @@ TEST(UnionTest, StringValidationValidateString) {
   array_header->num_elements = 20;
   mojo::internal::BoundsChecker bounds_checker(data, 32, 0);
   void* raw_buf = buf.Leak();
-  EXPECT_FALSE(internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker));
+  EXPECT_FALSE(
+      internal::ObjectUnion_Data::Validate(raw_buf, &bounds_checker, false));
   free(raw_buf);
 }
+
+TEST(UnionTest, PodUnionInStructClone) {
+  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());
+}
+
+TEST(UnionTest, PodUnionInStructSerialization) {
+  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::FixedBuffer buf(size);
+  internal::SmallStruct_Data* data = nullptr;
+  Serialize_(small_struct.Pass(), &buf, &data);
+
+  SmallStructPtr deserialized;
+  Deserialize_(data, &deserialized);
+
+  EXPECT_EQ(10, deserialized->pod_union->get_f_int32());
+}
+
+TEST(UnionTest, ObjectUnionInStructSerialization) {
+  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::FixedBuffer buf(size);
+  internal::SmallObjStruct_Data* data = nullptr;
+  Serialize_(obj_struct.Pass(), &buf, &data);
+
+  SmallObjStructPtr deserialized;
+  Deserialize_(data, &deserialized);
+
+  EXPECT_EQ(hello, deserialized->obj_union->get_f_string());
+}
+
+TEST(UnionTest, UnionsInStructsValidation) {
+  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::FixedBuffer buf(size);
+  internal::SmallStruct_Data* data = nullptr;
+  Serialize_(small_struct.Pass(), &buf, &data);
+
+  void* raw_buf = buf.Leak();
+  mojo::internal::BoundsChecker bounds_checker(data, size, 0);
+  EXPECT_TRUE(internal::SmallStruct_Data::Validate(raw_buf, &bounds_checker));
+  free(raw_buf);
+}
+
+TEST(UnionTest, PodUnionInStructValidationFailure) {
+  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::FixedBuffer buf(size);
+  internal::SmallStruct_Data* data = nullptr;
+  Serialize_(small_struct.Pass(), &buf, &data);
+  data->pod_union.tag = static_cast<internal::PodUnion_Data::PodUnion_Tag>(100);
+
+  void* raw_buf = buf.Leak();
+  mojo::internal::BoundsChecker bounds_checker(data, size, 0);
+  EXPECT_FALSE(internal::SmallStruct_Data::Validate(raw_buf, &bounds_checker));
+  free(raw_buf);
+}
+
+TEST(UnionTest, NullUnionValidationFailure) {
+  Environment environment;
+  SmallStructPtr small_struct(SmallStruct::New());
+
+  size_t size = GetSerializedSize_(small_struct);
+
+  mojo::internal::FixedBuffer buf(size);
+  internal::SmallStruct_Data* data = nullptr;
+  Serialize_(small_struct.Pass(), &buf, &data);
+
+  void* raw_buf = buf.Leak();
+  mojo::internal::BoundsChecker bounds_checker(data, size, 0);
+  EXPECT_FALSE(internal::SmallStruct_Data::Validate(raw_buf, &bounds_checker));
+  free(raw_buf);
+}
+
+TEST(UnionTest, NullableUnionValidation) {
+  Environment environment;
+  SmallStructNullableUnionPtr small_struct(SmallStructNullableUnion::New());
+
+  size_t size = GetSerializedSize_(small_struct);
+
+  mojo::internal::FixedBuffer buf(size);
+  internal::SmallStructNullableUnion_Data* data = nullptr;
+  Serialize_(small_struct.Pass(), &buf, &data);
+
+  void* raw_buf = buf.Leak();
+  mojo::internal::BoundsChecker bounds_checker(data, size, 0);
+  EXPECT_TRUE(internal::SmallStructNullableUnion_Data::Validate(
+      raw_buf, &bounds_checker));
+  free(raw_buf);
+}
+
+TEST(UnionTest, PodUnionInArray) {
+  SmallStructPtr small_struct(SmallStruct::New());
+  small_struct->pod_union_array = Array<PodUnionPtr>(2);
+  small_struct->pod_union_array[0] = PodUnion::New();
+  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;
+
+  Array<PodUnionPtr> array(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::FixedBuffer buf(size);
+  mojo::internal::Array_Data<internal::PodUnion_Data>* data;
+  SerializeArray_<mojo::internal::ArrayValidateParams<
+      0, false, mojo::internal::NoValidateParams>>(array.Pass(), &buf, &data);
+
+  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, PodUnionInArraySerializationWithNull) {
+  Environment environment;
+
+  Array<PodUnionPtr> array(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::FixedBuffer buf(size);
+  mojo::internal::Array_Data<internal::PodUnion_Data>* data;
+  SerializeArray_<mojo::internal::ArrayValidateParams<
+      0, false, mojo::internal::NoValidateParams>>(array.Pass(), &buf, &data);

[yzshen1, 2015/02/25 21:07:00]

false -> true, meaning that elements are nullable.

[azani, 2015/03/03 00:44:15]

Done.

+
+  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());
+}
+
+/*

[yzshen1, 2015/02/25 21:07:00]

Please remove any code if it is not needed. (Or maybe you should uncomment?)

+TEST(UnionTest, PodUnionInArrayInStruct) {
+  Environment environment;
+  SmallStructPtr small_struct(SmallStruct::New());
+
+  small_struct->pod_union_array = Array<PodUnionPtr>(2);
+  small_struct->pod_union_array[0] = PodUnion::New();
+  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);
+
+  size_t size = GetSerializedSize_(small_struct);
+  EXPECT_EQ(88U, size);
+
+  mojo::internal::FixedBuffer buf(size);
+  internal::SmallStruct_Data* data = nullptr;
+  Serialize_(small_struct.Pass(), &buf, &data);
+
+  SmallStructPtr deserialized;
+  Deserialize_(data, &deserialized);
+
+  EXPECT_EQ(10, deserialized->pod_union_array[0]->get_f_int8());
+  EXPECT_EQ(12, deserialized->pod_union_array[1]->get_f_int16());
+}
+*/
+
 }  // namespace test
 }  // namespace mojo