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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
//
// TODO(kenton): Improve this unittest to bring it up to the standards of
// other proto2 unittests.

#include <algorithm>
#include <limits>
#include <list>
#include <vector>

#include <google/protobuf/repeated_field.h>

#include <google/protobuf/stubs/common.h>
#include <google/protobuf/unittest.pb.h>
#include <google/protobuf/stubs/strutil.h>
#include <google/protobuf/testing/googletest.h>
#include <gtest/gtest.h>
#include <google/protobuf/stubs/stl_util.h>

namespace google {
using protobuf_unittest::TestAllTypes;

namespace protobuf {
namespace {

// Test operations on a small RepeatedField.
TEST(RepeatedField, Small) {
RepeatedField<int> field;

EXPECT_EQ(field.size(), 0);

field.Add(5);

EXPECT_EQ(field.size(), 1);
EXPECT_EQ(field.Get(0), 5);

field.Add(42);

EXPECT_EQ(field.size(), 2);
EXPECT_EQ(field.Get(0), 5);
EXPECT_EQ(field.Get(1), 42);

field.Set(1, 23);

EXPECT_EQ(field.size(), 2);
EXPECT_EQ(field.Get(0), 5);
EXPECT_EQ(field.Get(1), 23);

field.RemoveLast();

EXPECT_EQ(field.size(), 1);
EXPECT_EQ(field.Get(0), 5);

field.Clear();

EXPECT_EQ(field.size(), 0);
int expected_usage = 4 * sizeof(int);
EXPECT_EQ(field.SpaceUsedExcludingSelf(), expected_usage);
}


// Test operations on a RepeatedField which is large enough to allocate a
// separate array.
TEST(RepeatedField, Large) {
RepeatedField<int> field;

for (int i = 0; i < 16; i++) {
field.Add(i * i);
}

EXPECT_EQ(field.size(), 16);

for (int i = 0; i < 16; i++) {
EXPECT_EQ(field.Get(i), i * i);
}

int expected_usage = 16 * sizeof(int);
EXPECT_GE(field.SpaceUsedExcludingSelf(), expected_usage);
}

// Test swapping between various types of RepeatedFields.
TEST(RepeatedField, SwapSmallSmall) {
RepeatedField<int> field1;
RepeatedField<int> field2;

field1.Add(5);
field1.Add(42);

field1.Swap(&field2);

EXPECT_EQ(field1.size(), 0);
EXPECT_EQ(field2.size(), 2);
EXPECT_EQ(field2.Get(0), 5);
EXPECT_EQ(field2.Get(1), 42);
}

TEST(RepeatedField, SwapLargeSmall) {
RepeatedField<int> field1;
RepeatedField<int> field2;

for (int i = 0; i < 16; i++) {
field1.Add(i * i);
}
field2.Add(5);
field2.Add(42);
field1.Swap(&field2);

EXPECT_EQ(field1.size(), 2);
EXPECT_EQ(field1.Get(0), 5);
EXPECT_EQ(field1.Get(1), 42);
EXPECT_EQ(field2.size(), 16);
for (int i = 0; i < 16; i++) {
EXPECT_EQ(field2.Get(i), i * i);
}
}

TEST(RepeatedField, SwapLargeLarge) {
RepeatedField<int> field1;
RepeatedField<int> field2;

field1.Add(5);
field1.Add(42);
for (int i = 0; i < 16; i++) {
field1.Add(i);
field2.Add(i * i);
}
field2.Swap(&field1);

EXPECT_EQ(field1.size(), 16);
for (int i = 0; i < 16; i++) {
EXPECT_EQ(field1.Get(i), i * i);
}
EXPECT_EQ(field2.size(), 18);
EXPECT_EQ(field2.Get(0), 5);
EXPECT_EQ(field2.Get(1), 42);
for (int i = 2; i < 18; i++) {
EXPECT_EQ(field2.Get(i), i - 2);
}
}

// Determines how much space was reserved by the given field by adding elements
// to it until it re-allocates its space.
static int ReservedSpace(RepeatedField<int>* field) {
const int* ptr = field->data();
do {
field->Add(0);
} while (field->data() == ptr);

return field->size() - 1;
}

TEST(RepeatedField, ReserveMoreThanDouble) {
// Reserve more than double the previous space in the field and expect the
// field to reserve exactly the amount specified.
RepeatedField<int> field;
field.Reserve(20);

EXPECT_EQ(20, ReservedSpace(&field));
}

TEST(RepeatedField, ReserveLessThanDouble) {
// Reserve less than double the previous space in the field and expect the
// field to grow by double instead.
RepeatedField<int> field;
field.Reserve(20);
field.Reserve(30);

EXPECT_EQ(40, ReservedSpace(&field));
}

TEST(RepeatedField, ReserveLessThanExisting) {
// Reserve less than the previous space in the field and expect the
// field to not re-allocate at all.
RepeatedField<int> field;
field.Reserve(20);
const int* previous_ptr = field.data();
field.Reserve(10);

EXPECT_EQ(previous_ptr, field.data());
EXPECT_EQ(20, ReservedSpace(&field));
}

TEST(RepeatedField, MergeFrom) {
RepeatedField<int> source, destination;
source.Add(4);
source.Add(5);
destination.Add(1);
destination.Add(2);
destination.Add(3);

destination.MergeFrom(source);

ASSERT_EQ(5, destination.size());
EXPECT_EQ(1, destination.Get(0));
EXPECT_EQ(2, destination.Get(1));
EXPECT_EQ(3, destination.Get(2));
EXPECT_EQ(4, destination.Get(3));
EXPECT_EQ(5, destination.Get(4));
}

TEST(RepeatedField, CopyFrom) {
RepeatedField<int> source, destination;
source.Add(4);
source.Add(5);
destination.Add(1);
destination.Add(2);
destination.Add(3);

destination.CopyFrom(source);

ASSERT_EQ(2, destination.size());
EXPECT_EQ(4, destination.Get(0));
EXPECT_EQ(5, destination.Get(1));
}

TEST(RepeatedField, CopyConstruct) {
RepeatedField<int> source;
source.Add(1);
source.Add(2);

RepeatedField<int> destination(source);

ASSERT_EQ(2, destination.size());
EXPECT_EQ(1, destination.Get(0));
EXPECT_EQ(2, destination.Get(1));
}

TEST(RepeatedField, IteratorConstruct) {
vector<int> values;
values.push_back(1);
values.push_back(2);

RepeatedField<int> field(values.begin(), values.end());
ASSERT_EQ(values.size(), field.size());
EXPECT_EQ(values[0], field.Get(0));
EXPECT_EQ(values[1], field.Get(1));

RepeatedField<int> other(field.begin(), field.end());
ASSERT_EQ(values.size(), other.size());
EXPECT_EQ(values[0], other.Get(0));
EXPECT_EQ(values[1], other.Get(1));
}

TEST(RepeatedField, CopyAssign) {
RepeatedField<int> source, destination;
source.Add(4);
source.Add(5);
destination.Add(1);
destination.Add(2);
destination.Add(3);

destination = source;

ASSERT_EQ(2, destination.size());
EXPECT_EQ(4, destination.Get(0));
EXPECT_EQ(5, destination.Get(1));
}

TEST(RepeatedField, SelfAssign) {
// Verify that assignment to self does not destroy data.
RepeatedField<int> source, *p;
p = &source;
source.Add(7);
source.Add(8);

*p = source;

ASSERT_EQ(2, source.size());
EXPECT_EQ(7, source.Get(0));
EXPECT_EQ(8, source.Get(1));
}

TEST(RepeatedField, MutableDataIsMutable) {
RepeatedField<int> field;
field.Add(1);
EXPECT_EQ(1, field.Get(0));
// The fact that this line compiles would be enough, but we'll check the
// value anyway.
*field.mutable_data() = 2;
EXPECT_EQ(2, field.Get(0));
}

TEST(RepeatedField, Truncate) {
RepeatedField<int> field;

field.Add(12);
field.Add(34);
field.Add(56);
field.Add(78);
EXPECT_EQ(4, field.size());

field.Truncate(3);
EXPECT_EQ(3, field.size());

field.Add(90);
EXPECT_EQ(4, field.size());
EXPECT_EQ(90, field.Get(3));

// Truncations that don't change the size are allowed, but growing is not
// allowed.
field.Truncate(field.size());
#ifdef GTEST_HAS_DEATH_TEST
EXPECT_DEBUG_DEATH(field.Truncate(field.size() + 1), "new_size");
#endif
}


TEST(RepeatedField, ExtractSubrange) {
// Exhaustively test every subrange in arrays of all sizes from 0 through 9.
for (int sz = 0; sz < 10; ++sz) {
for (int num = 0; num <= sz; ++num) {
for (int start = 0; start < sz - num; ++start) {
// Create RepeatedField with sz elements having values 0 through sz-1.
RepeatedField<int32> field;
for (int i = 0; i < sz; ++i)
field.Add(i);
EXPECT_EQ(field.size(), sz);

// Create a catcher array and call ExtractSubrange.
int32 catcher[10];
for (int i = 0; i < 10; ++i)
catcher[i] = -1;
field.ExtractSubrange(start, num, catcher);

// Does the resulting array have the right size?
EXPECT_EQ(field.size(), sz - num);

// Were the removed elements extracted into the catcher array?
for (int i = 0; i < num; ++i)
EXPECT_EQ(catcher[i], start + i);
EXPECT_EQ(catcher[num], -1);

// Does the resulting array contain the right values?
for (int i = 0; i < start; ++i)
EXPECT_EQ(field.Get(i), i);
for (int i = start; i < field.size(); ++i)
EXPECT_EQ(field.Get(i), i + num);
}
}
}
}

// ===================================================================
// RepeatedPtrField tests. These pretty much just mirror the RepeatedField
// tests above.

TEST(RepeatedPtrField, Small) {
RepeatedPtrField<string> field;

EXPECT_EQ(field.size(), 0);

field.Add()->assign("foo");

EXPECT_EQ(field.size(), 1);
EXPECT_EQ(field.Get(0), "foo");

field.Add()->assign("bar");

EXPECT_EQ(field.size(), 2);
EXPECT_EQ(field.Get(0), "foo");
EXPECT_EQ(field.Get(1), "bar");

field.Mutable(1)->assign("baz");

EXPECT_EQ(field.size(), 2);
EXPECT_EQ(field.Get(0), "foo");
EXPECT_EQ(field.Get(1), "baz");

field.RemoveLast();

EXPECT_EQ(field.size(), 1);
EXPECT_EQ(field.Get(0), "foo");

field.Clear();

EXPECT_EQ(field.size(), 0);
}


TEST(RepeatedPtrField, Large) {
RepeatedPtrField<string> field;

for (int i = 0; i < 16; i++) {
*field.Add() += 'a' + i;
}

EXPECT_EQ(field.size(), 16);

for (int i = 0; i < 16; i++) {
EXPECT_EQ(field.Get(i).size(), 1);
EXPECT_EQ(field.Get(i)[0], 'a' + i);
}

int min_expected_usage = 16 * sizeof(string);
EXPECT_GE(field.SpaceUsedExcludingSelf(), min_expected_usage);
}

TEST(RepeatedPtrField, SwapSmallSmall) {
RepeatedPtrField<string> field1;
RepeatedPtrField<string> field2;

field1.Add()->assign("foo");
field1.Add()->assign("bar");
field1.Swap(&field2);

EXPECT_EQ(field1.size(), 0);
EXPECT_EQ(field2.size(), 2);
EXPECT_EQ(field2.Get(0), "foo");
EXPECT_EQ(field2.Get(1), "bar");
}

TEST(RepeatedPtrField, SwapLargeSmall) {
RepeatedPtrField<string> field1;
RepeatedPtrField<string> field2;

field2.Add()->assign("foo");
field2.Add()->assign("bar");
for (int i = 0; i < 16; i++) {
*field1.Add() += 'a' + i;
}
field1.Swap(&field2);

EXPECT_EQ(field1.size(), 2);
EXPECT_EQ(field1.Get(0), "foo");
EXPECT_EQ(field1.Get(1), "bar");
EXPECT_EQ(field2.size(), 16);
for (int i = 0; i < 16; i++) {
EXPECT_EQ(field2.Get(i).size(), 1);
EXPECT_EQ(field2.Get(i)[0], 'a' + i);
}
}

TEST(RepeatedPtrField, SwapLargeLarge) {
RepeatedPtrField<string> field1;
RepeatedPtrField<string> field2;

field1.Add()->assign("foo");
field1.Add()->assign("bar");
for (int i = 0; i < 16; i++) {
*field1.Add() += 'A' + i;
*field2.Add() += 'a' + i;
}
field2.Swap(&field1);

EXPECT_EQ(field1.size(), 16);
for (int i = 0; i < 16; i++) {
EXPECT_EQ(field1.Get(i).size(), 1);
EXPECT_EQ(field1.Get(i)[0], 'a' + i);
}
EXPECT_EQ(field2.size(), 18);
EXPECT_EQ(field2.Get(0), "foo");
EXPECT_EQ(field2.Get(1), "bar");
for (int i = 2; i < 18; i++) {
EXPECT_EQ(field2.Get(i).size(), 1);
EXPECT_EQ(field2.Get(i)[0], 'A' + i - 2);
}
}

static int ReservedSpace(RepeatedPtrField<string>* field) {
const string* const* ptr = field->data();
do {
field->Add();
} while (field->data() == ptr);

return field->size() - 1;
}

TEST(RepeatedPtrField, ReserveMoreThanDouble) {
RepeatedPtrField<string> field;
field.Reserve(20);

EXPECT_EQ(20, ReservedSpace(&field));
}

TEST(RepeatedPtrField, ReserveLessThanDouble) {
RepeatedPtrField<string> field;
field.Reserve(20);
field.Reserve(30);

EXPECT_EQ(40, ReservedSpace(&field));
}

TEST(RepeatedPtrField, ReserveLessThanExisting) {
RepeatedPtrField<string> field;
field.Reserve(20);
const string* const* previous_ptr = field.data();
field.Reserve(10);

EXPECT_EQ(previous_ptr, field.data());
EXPECT_EQ(20, ReservedSpace(&field));
}

TEST(RepeatedPtrField, ReserveDoesntLoseAllocated) {
// Check that a bug is fixed: An earlier implementation of Reserve()
// failed to copy pointers to allocated-but-cleared objects, possibly
// leading to segfaults.
RepeatedPtrField<string> field;
string* first = field.Add();
field.RemoveLast();

field.Reserve(20);
EXPECT_EQ(first, field.Add());
}

// Clearing elements is tricky with RepeatedPtrFields since the memory for
// the elements is retained and reused.
TEST(RepeatedPtrField, ClearedElements) {
RepeatedPtrField<string> field;

string* original = field.Add();
*original = "foo";

EXPECT_EQ(field.ClearedCount(), 0);

field.RemoveLast();
EXPECT_TRUE(original->empty());
EXPECT_EQ(field.ClearedCount(), 1);

EXPECT_EQ(field.Add(), original); // Should return same string for reuse.

EXPECT_EQ(field.ReleaseLast(), original); // We take ownership.
EXPECT_EQ(field.ClearedCount(), 0);

EXPECT_NE(field.Add(), original); // Should NOT return the same string.
EXPECT_EQ(field.ClearedCount(), 0);

field.AddAllocated(original); // Give ownership back.
EXPECT_EQ(field.ClearedCount(), 0);
EXPECT_EQ(field.Mutable(1), original);

field.Clear();
EXPECT_EQ(field.ClearedCount(), 2);
EXPECT_EQ(field.ReleaseCleared(), original); // Take ownership again.
EXPECT_EQ(field.ClearedCount(), 1);
EXPECT_NE(field.Add(), original);
EXPECT_EQ(field.ClearedCount(), 0);
EXPECT_NE(field.Add(), original);
EXPECT_EQ(field.ClearedCount(), 0);

field.AddCleared(original); // Give ownership back, but as a cleared object.
EXPECT_EQ(field.ClearedCount(), 1);
EXPECT_EQ(field.Add(), original);
EXPECT_EQ(field.ClearedCount(), 0);
}

// Test all code paths in AddAllocated().
TEST(RepeatedPtrField, AddAlocated) {
RepeatedPtrField<string> field;
while (field.size() < field.Capacity()) {
field.Add()->assign("filler");
}

int index = field.size();

// First branch: Field is at capacity with no cleared objects.
string* foo = new string("foo");
field.AddAllocated(foo);
EXPECT_EQ(index + 1, field.size());
EXPECT_EQ(0, field.ClearedCount());
EXPECT_EQ(foo, &field.Get(index));

// Last branch: Field is not at capacity and there are no cleared objects.
string* bar = new string("bar");
field.AddAllocated(bar);
++index;
EXPECT_EQ(index + 1, field.size());
EXPECT_EQ(0, field.ClearedCount());
EXPECT_EQ(bar, &field.Get(index));

// Third branch: Field is not at capacity and there are no cleared objects.
field.RemoveLast();
string* baz = new string("baz");
field.AddAllocated(baz);
EXPECT_EQ(index + 1, field.size());
EXPECT_EQ(1, field.ClearedCount());
EXPECT_EQ(baz, &field.Get(index));

// Second branch: Field is at capacity but has some cleared objects.
while (field.size() < field.Capacity()) {
field.Add()->assign("filler2");
}
field.RemoveLast();
index = field.size();
string* qux = new string("qux");
field.AddAllocated(qux);
EXPECT_EQ(index + 1, field.size());
// We should have discarded the cleared object.
EXPECT_EQ(0, field.ClearedCount());
EXPECT_EQ(qux, &field.Get(index));
}

TEST(RepeatedPtrField, MergeFrom) {
RepeatedPtrField<string> source, destination;
source.Add()->assign("4");
source.Add()->assign("5");
destination.Add()->assign("1");
destination.Add()->assign("2");
destination.Add()->assign("3");

destination.MergeFrom(source);

ASSERT_EQ(5, destination.size());
EXPECT_EQ("1", destination.Get(0));
EXPECT_EQ("2", destination.Get(1));
EXPECT_EQ("3", destination.Get(2));
EXPECT_EQ("4", destination.Get(3));
EXPECT_EQ("5", destination.Get(4));
}

TEST(RepeatedPtrField, CopyFrom) {
RepeatedPtrField<string> source, destination;
source.Add()->assign("4");
source.Add()->assign("5");
destination.Add()->assign("1");
destination.Add()->assign("2");
destination.Add()->assign("3");

destination.CopyFrom(source);

ASSERT_EQ(2, destination.size());
EXPECT_EQ("4", destination.Get(0));
EXPECT_EQ("5", destination.Get(1));
}

TEST(RepeatedPtrField, CopyConstruct) {
RepeatedPtrField<string> source;
source.Add()->assign("1");
source.Add()->assign("2");

RepeatedPtrField<string> destination(source);

ASSERT_EQ(2, destination.size());
EXPECT_EQ("1", destination.Get(0));
EXPECT_EQ("2", destination.Get(1));
}

TEST(RepeatedPtrField, IteratorConstruct_String) {
vector<string> values;
values.push_back("1");
values.push_back("2");

RepeatedPtrField<string> field(values.begin(), values.end());
ASSERT_EQ(values.size(), field.size());
EXPECT_EQ(values[0], field.Get(0));
EXPECT_EQ(values[1], field.Get(1));

RepeatedPtrField<string> other(field.begin(), field.end());
ASSERT_EQ(values.size(), other.size());
EXPECT_EQ(values[0], other.Get(0));
EXPECT_EQ(values[1], other.Get(1));
}

TEST(RepeatedPtrField, IteratorConstruct_Proto) {
typedef TestAllTypes::NestedMessage Nested;
vector<Nested> values;
values.push_back(Nested());
values.back().set_bb(1);
values.push_back(Nested());
values.back().set_bb(2);

RepeatedPtrField<Nested> field(values.begin(), values.end());
ASSERT_EQ(values.size(), field.size());
EXPECT_EQ(values[0].bb(), field.Get(0).bb());
EXPECT_EQ(values[1].bb(), field.Get(1).bb());

RepeatedPtrField<Nested> other(field.begin(), field.end());
ASSERT_EQ(values.size(), other.size());
EXPECT_EQ(values[0].bb(), other.Get(0).bb());
EXPECT_EQ(values[1].bb(), other.Get(1).bb());
}

TEST(RepeatedPtrField, CopyAssign) {
RepeatedPtrField<string> source, destination;
source.Add()->assign("4");
source.Add()->assign("5");
destination.Add()->assign("1");
destination.Add()->assign("2");
destination.Add()->assign("3");

destination = source;

ASSERT_EQ(2, destination.size());
EXPECT_EQ("4", destination.Get(0));
EXPECT_EQ("5", destination.Get(1));
}

TEST(RepeatedPtrField, SelfAssign) {
// Verify that assignment to self does not destroy data.
RepeatedPtrField<string> source, *p;
p = &source;
source.Add()->assign("7");
source.Add()->assign("8");

*p = source;

ASSERT_EQ(2, source.size());
EXPECT_EQ("7", source.Get(0));
EXPECT_EQ("8", source.Get(1));
}

TEST(RepeatedPtrField, MutableDataIsMutable) {
RepeatedPtrField<string> field;
*field.Add() = "1";
EXPECT_EQ("1", field.Get(0));
// The fact that this line compiles would be enough, but we'll check the
// value anyway.
string** data = field.mutable_data();
**data = "2";
EXPECT_EQ("2", field.Get(0));
}

TEST(RepeatedPtrField, ExtractSubrange) {
// Exhaustively test every subrange in arrays of all sizes from 0 through 9
// with 0 through 3 cleared elements at the end.
for (int sz = 0; sz < 10; ++sz) {
for (int num = 0; num <= sz; ++num) {
for (int start = 0; start < sz - num; ++start) {
for (int extra = 0; extra < 4; ++extra) {
vector<string*> subject;

// Create an array with "sz" elements and "extra" cleared elements.
RepeatedPtrField<string> field;
for (int i = 0; i < sz + extra; ++i) {
subject.push_back(new string());
field.AddAllocated(subject[i]);
}
EXPECT_EQ(field.size(), sz + extra);
for (int i = 0; i < extra; ++i)
field.RemoveLast();
EXPECT_EQ(field.size(), sz);
EXPECT_EQ(field.ClearedCount(), extra);

// Create a catcher array and call ExtractSubrange.
string* catcher[10];
for (int i = 0; i < 10; ++i)
catcher[i] = NULL;
field.ExtractSubrange(start, num, catcher);

// Does the resulting array have the right size?
EXPECT_EQ(field.size(), sz - num);

// Were the removed elements extracted into the catcher array?
for (int i = 0; i < num; ++i)
EXPECT_EQ(catcher[i], subject[start + i]);
EXPECT_EQ(NULL, catcher[num]);

// Does the resulting array contain the right values?
for (int i = 0; i < start; ++i)
EXPECT_EQ(field.Mutable(i), subject[i]);
for (int i = start; i < field.size(); ++i)
EXPECT_EQ(field.Mutable(i), subject[i + num]);

// Reinstate the cleared elements.
EXPECT_EQ(field.ClearedCount(), extra);
for (int i = 0; i < extra; ++i)
field.Add();
EXPECT_EQ(field.ClearedCount(), 0);
EXPECT_EQ(field.size(), sz - num + extra);

// Make sure the extra elements are all there (in some order).
for (int i = sz; i < sz + extra; ++i) {
int count = 0;
for (int j = sz; j < sz + extra; ++j) {
if (field.Mutable(j - num) == subject[i])
count += 1;
}
EXPECT_EQ(count, 1);
}

// Release the caught elements.
for (int i = 0; i < num; ++i)
delete catcher[i];
}
}
}
}
}

TEST(RepeatedPtrField, DeleteSubrange) {
// DeleteSubrange is a trivial extension of ExtendSubrange.
}

// ===================================================================

// Iterator tests stolen from net/proto/proto-array_unittest.
class RepeatedFieldIteratorTest : public testing::Test {
protected:
virtual void SetUp() {
for (int i = 0; i < 3; ++i) {
proto_array_.Add(i);
}
}

RepeatedField<int> proto_array_;
};

TEST_F(RepeatedFieldIteratorTest, Convertible) {
RepeatedField<int>::iterator iter = proto_array_.begin();
RepeatedField<int>::const_iterator c_iter = iter;
RepeatedField<int>::value_type value = *c_iter;
EXPECT_EQ(0, value);
}

TEST_F(RepeatedFieldIteratorTest, MutableIteration) {
RepeatedField<int>::iterator iter = proto_array_.begin();
EXPECT_EQ(0, *iter);
++iter;
EXPECT_EQ(1, *iter++);
EXPECT_EQ(2, *iter);
++iter;
EXPECT_TRUE(proto_array_.end() == iter);

EXPECT_EQ(2, *(proto_array_.end() - 1));
}

TEST_F(RepeatedFieldIteratorTest, ConstIteration) {
const RepeatedField<int>& const_proto_array = proto_array_;
RepeatedField<int>::const_iterator iter = const_proto_array.begin();
EXPECT_EQ(0, *iter);
++iter;
EXPECT_EQ(1, *iter++);
EXPECT_EQ(2, *iter);
++iter;
EXPECT_TRUE(proto_array_.end() == iter);
EXPECT_EQ(2, *(proto_array_.end() - 1));
}

TEST_F(RepeatedFieldIteratorTest, Mutation) {
RepeatedField<int>::iterator iter = proto_array_.begin();
*iter = 7;
EXPECT_EQ(7, proto_array_.Get(0));
}

// -------------------------------------------------------------------

class RepeatedPtrFieldIteratorTest : public testing::Test {
protected:
virtual void SetUp() {
proto_array_.Add()->assign("foo");
proto_array_.Add()->assign("bar");
proto_array_.Add()->assign("baz");
}

RepeatedPtrField<string> proto_array_;
};

TEST_F(RepeatedPtrFieldIteratorTest, Convertible) {
RepeatedPtrField<string>::iterator iter = proto_array_.begin();
RepeatedPtrField<string>::const_iterator c_iter = iter;
RepeatedPtrField<string>::value_type value = *c_iter;
EXPECT_EQ("foo", value);
}

TEST_F(RepeatedPtrFieldIteratorTest, MutableIteration) {
RepeatedPtrField<string>::iterator iter = proto_array_.begin();
EXPECT_EQ("foo", *iter);
++iter;
EXPECT_EQ("bar", *(iter++));
EXPECT_EQ("baz", *iter);
++iter;
EXPECT_TRUE(proto_array_.end() == iter);
EXPECT_EQ("baz", *(--proto_array_.end()));
}

TEST_F(RepeatedPtrFieldIteratorTest, ConstIteration) {
const RepeatedPtrField<string>& const_proto_array = proto_array_;
RepeatedPtrField<string>::const_iterator iter = const_proto_array.begin();
EXPECT_EQ("foo", *iter);
++iter;
EXPECT_EQ("bar", *(iter++));
EXPECT_EQ("baz", *iter);
++iter;
EXPECT_TRUE(const_proto_array.end() == iter);
EXPECT_EQ("baz", *(--const_proto_array.end()));
}

TEST_F(RepeatedPtrFieldIteratorTest, MutableReverseIteration) {
RepeatedPtrField<string>::reverse_iterator iter = proto_array_.rbegin();
EXPECT_EQ("baz", *iter);
++iter;
EXPECT_EQ("bar", *(iter++));
EXPECT_EQ("foo", *iter);
++iter;
EXPECT_TRUE(proto_array_.rend() == iter);
EXPECT_EQ("foo", *(--proto_array_.rend()));
}

TEST_F(RepeatedPtrFieldIteratorTest, ConstReverseIteration) {
const RepeatedPtrField<string>& const_proto_array = proto_array_;
RepeatedPtrField<string>::const_reverse_iterator iter
= const_proto_array.rbegin();
EXPECT_EQ("baz", *iter);
++iter;
EXPECT_EQ("bar", *(iter++));
EXPECT_EQ("foo", *iter);
++iter;
EXPECT_TRUE(const_proto_array.rend() == iter);
EXPECT_EQ("foo", *(--const_proto_array.rend()));
}

TEST_F(RepeatedPtrFieldIteratorTest, RandomAccess) {
RepeatedPtrField<string>::iterator iter = proto_array_.begin();
RepeatedPtrField<string>::iterator iter2 = iter;
++iter2;
++iter2;
EXPECT_TRUE(iter + 2 == iter2);
EXPECT_TRUE(iter == iter2 - 2);
EXPECT_EQ("baz", iter[2]);
EXPECT_EQ("baz", *(iter + 2));
EXPECT_EQ(3, proto_array_.end() - proto_array_.begin());
}

TEST_F(RepeatedPtrFieldIteratorTest, Comparable) {
RepeatedPtrField<string>::const_iterator iter = proto_array_.begin();
RepeatedPtrField<string>::const_iterator iter2 = iter + 1;
EXPECT_TRUE(iter == iter);
EXPECT_TRUE(iter != iter2);
EXPECT_TRUE(iter < iter2);
EXPECT_TRUE(iter <= iter2);
EXPECT_TRUE(iter <= iter);
EXPECT_TRUE(iter2 > iter);
EXPECT_TRUE(iter2 >= iter);
EXPECT_TRUE(iter >= iter);
}

// Uninitialized iterator does not point to any of the RepeatedPtrField.
TEST_F(RepeatedPtrFieldIteratorTest, UninitializedIterator) {
RepeatedPtrField<string>::iterator iter;
EXPECT_TRUE(iter != proto_array_.begin());
EXPECT_TRUE(iter != proto_array_.begin() + 1);
EXPECT_TRUE(iter != proto_array_.begin() + 2);
EXPECT_TRUE(iter != proto_array_.begin() + 3);
EXPECT_TRUE(iter != proto_array_.end());
}

TEST_F(RepeatedPtrFieldIteratorTest, STLAlgorithms_lower_bound) {
proto_array_.Clear();
proto_array_.Add()->assign("a");
proto_array_.Add()->assign("c");
proto_array_.Add()->assign("d");
proto_array_.Add()->assign("n");
proto_array_.Add()->assign("p");
proto_array_.Add()->assign("x");
proto_array_.Add()->assign("y");

string v = "f";
RepeatedPtrField<string>::const_iterator it =
lower_bound(proto_array_.begin(), proto_array_.end(), v);

EXPECT_EQ(*it, "n");
EXPECT_TRUE(it == proto_array_.begin() + 3);
}

TEST_F(RepeatedPtrFieldIteratorTest, Mutation) {
RepeatedPtrField<string>::iterator iter = proto_array_.begin();
*iter = "qux";
EXPECT_EQ("qux", proto_array_.Get(0));
}

// -------------------------------------------------------------------

class RepeatedPtrFieldPtrsIteratorTest : public testing::Test {
protected:
virtual void SetUp() {
proto_array_.Add()->assign("foo");
proto_array_.Add()->assign("bar");
proto_array_.Add()->assign("baz");
const_proto_array_ = &proto_array_;
}

RepeatedPtrField<string> proto_array_;
const RepeatedPtrField<string>* const_proto_array_;
};

TEST_F(RepeatedPtrFieldPtrsIteratorTest, ConvertiblePtr) {
RepeatedPtrField<string>::pointer_iterator iter =
proto_array_.pointer_begin();
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, ConvertibleConstPtr) {
RepeatedPtrField<string>::const_pointer_iterator iter =
const_proto_array_->pointer_begin();
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, MutablePtrIteration) {
RepeatedPtrField<string>::pointer_iterator iter =
proto_array_.pointer_begin();
EXPECT_EQ("foo", **iter);
++iter;
EXPECT_EQ("bar", **(iter++));
EXPECT_EQ("baz", **iter);
++iter;
EXPECT_TRUE(proto_array_.pointer_end() == iter);
EXPECT_EQ("baz", **(--proto_array_.pointer_end()));
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, MutableConstPtrIteration) {
RepeatedPtrField<string>::const_pointer_iterator iter =
const_proto_array_->pointer_begin();
EXPECT_EQ("foo", **iter);
++iter;
EXPECT_EQ("bar", **(iter++));
EXPECT_EQ("baz", **iter);
++iter;
EXPECT_TRUE(const_proto_array_->pointer_end() == iter);
EXPECT_EQ("baz", **(--const_proto_array_->pointer_end()));
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, RandomPtrAccess) {
RepeatedPtrField<string>::pointer_iterator iter =
proto_array_.pointer_begin();
RepeatedPtrField<string>::pointer_iterator iter2 = iter;
++iter2;
++iter2;
EXPECT_TRUE(iter + 2 == iter2);
EXPECT_TRUE(iter == iter2 - 2);
EXPECT_EQ("baz", *iter[2]);
EXPECT_EQ("baz", **(iter + 2));
EXPECT_EQ(3, proto_array_.end() - proto_array_.begin());
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, RandomConstPtrAccess) {
RepeatedPtrField<string>::const_pointer_iterator iter =
const_proto_array_->pointer_begin();
RepeatedPtrField<string>::const_pointer_iterator iter2 = iter;
++iter2;
++iter2;
EXPECT_TRUE(iter + 2 == iter2);
EXPECT_TRUE(iter == iter2 - 2);
EXPECT_EQ("baz", *iter[2]);
EXPECT_EQ("baz", **(iter + 2));
EXPECT_EQ(3, const_proto_array_->end() - const_proto_array_->begin());
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, ComparablePtr) {
RepeatedPtrField<string>::pointer_iterator iter =
proto_array_.pointer_begin();
RepeatedPtrField<string>::pointer_iterator iter2 = iter + 1;
EXPECT_TRUE(iter == iter);
EXPECT_TRUE(iter != iter2);
EXPECT_TRUE(iter < iter2);
EXPECT_TRUE(iter <= iter2);
EXPECT_TRUE(iter <= iter);
EXPECT_TRUE(iter2 > iter);
EXPECT_TRUE(iter2 >= iter);
EXPECT_TRUE(iter >= iter);
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, ComparableConstPtr) {
RepeatedPtrField<string>::const_pointer_iterator iter =
const_proto_array_->pointer_begin();
RepeatedPtrField<string>::const_pointer_iterator iter2 = iter + 1;
EXPECT_TRUE(iter == iter);
EXPECT_TRUE(iter != iter2);
EXPECT_TRUE(iter < iter2);
EXPECT_TRUE(iter <= iter2);
EXPECT_TRUE(iter <= iter);
EXPECT_TRUE(iter2 > iter);
EXPECT_TRUE(iter2 >= iter);
EXPECT_TRUE(iter >= iter);
}

// Uninitialized iterator does not point to any of the RepeatedPtrOverPtrs.
// Dereferencing an uninitialized iterator crashes the process.
TEST_F(RepeatedPtrFieldPtrsIteratorTest, UninitializedPtrIterator) {
RepeatedPtrField<string>::pointer_iterator iter;
EXPECT_TRUE(iter != proto_array_.pointer_begin());
EXPECT_TRUE(iter != proto_array_.pointer_begin() + 1);
EXPECT_TRUE(iter != proto_array_.pointer_begin() + 2);
EXPECT_TRUE(iter != proto_array_.pointer_begin() + 3);
EXPECT_TRUE(iter != proto_array_.pointer_end());
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, UninitializedConstPtrIterator) {
RepeatedPtrField<string>::const_pointer_iterator iter;
EXPECT_TRUE(iter != const_proto_array_->pointer_begin());
EXPECT_TRUE(iter != const_proto_array_->pointer_begin() + 1);
EXPECT_TRUE(iter != const_proto_array_->pointer_begin() + 2);
EXPECT_TRUE(iter != const_proto_array_->pointer_begin() + 3);
EXPECT_TRUE(iter != const_proto_array_->pointer_end());
}

// This comparison functor is required by the tests for RepeatedPtrOverPtrs.
// They operate on strings and need to compare strings as strings in
// any stl algorithm, even though the iterator returns a pointer to a string
// - i.e. *iter has type string*.
struct StringLessThan {
bool operator()(const string* z, const string& y) {
return *z < y;
}
bool operator()(const string* z, const string* y) {
return *z < *y;
}
};

TEST_F(RepeatedPtrFieldPtrsIteratorTest, PtrSTLAlgorithms_lower_bound) {
proto_array_.Clear();
proto_array_.Add()->assign("a");
proto_array_.Add()->assign("c");
proto_array_.Add()->assign("d");
proto_array_.Add()->assign("n");
proto_array_.Add()->assign("p");
proto_array_.Add()->assign("x");
proto_array_.Add()->assign("y");

{
RepeatedPtrField<string>::pointer_iterator iter =
proto_array_.pointer_begin();
string v = "f";
RepeatedPtrField<string>::pointer_iterator it =
lower_bound(proto_array_.pointer_begin(), proto_array_.pointer_end(),
&v, StringLessThan());

GOOGLE_CHECK(*it != NULL);

EXPECT_EQ(**it, "n");
EXPECT_TRUE(it == proto_array_.pointer_begin() + 3);
}
{
RepeatedPtrField<string>::const_pointer_iterator iter =
const_proto_array_->pointer_begin();
string v = "f";
RepeatedPtrField<string>::const_pointer_iterator it =
lower_bound(const_proto_array_->pointer_begin(),
const_proto_array_->pointer_end(),
&v, StringLessThan());

GOOGLE_CHECK(*it != NULL);

EXPECT_EQ(**it, "n");
EXPECT_TRUE(it == const_proto_array_->pointer_begin() + 3);
}
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, PtrMutation) {
RepeatedPtrField<string>::pointer_iterator iter =
proto_array_.pointer_begin();
**iter = "qux";
EXPECT_EQ("qux", proto_array_.Get(0));

EXPECT_EQ("bar", proto_array_.Get(1));
EXPECT_EQ("baz", proto_array_.Get(2));
++iter;
delete *iter;
*iter = new string("a");
++iter;
delete *iter;
*iter = new string("b");
EXPECT_EQ("a", proto_array_.Get(1));
EXPECT_EQ("b", proto_array_.Get(2));
}

TEST_F(RepeatedPtrFieldPtrsIteratorTest, Sort) {
proto_array_.Add()->assign("c");
proto_array_.Add()->assign("d");
proto_array_.Add()->assign("n");
proto_array_.Add()->assign("p");
proto_array_.Add()->assign("a");
proto_array_.Add()->assign("y");
proto_array_.Add()->assign("x");
EXPECT_EQ("foo", proto_array_.Get(0));
EXPECT_EQ("n", proto_array_.Get(5));
EXPECT_EQ("x", proto_array_.Get(9));
sort(proto_array_.pointer_begin(),
proto_array_.pointer_end(),
StringLessThan());
EXPECT_EQ("a", proto_array_.Get(0));
EXPECT_EQ("baz", proto_array_.Get(2));
EXPECT_EQ("y", proto_array_.Get(9));
}


// -----------------------------------------------------------------------------
// Unit-tests for the insert iterators
// google::protobuf::RepeatedFieldBackInserter,
// google::protobuf::AllocatedRepeatedPtrFieldBackInserter
// Ported from util/gtl/proto-array-iterators_unittest.

class RepeatedFieldInsertionIteratorsTest : public testing::Test {
protected:
std::list<double> halves;
std::list<int> fibonacci;
std::vector<string> words;
typedef TestAllTypes::NestedMessage Nested;
Nested nesteds[2];
std::vector<Nested*> nested_ptrs;
TestAllTypes protobuffer;

virtual void SetUp() {
fibonacci.push_back(1);
fibonacci.push_back(1);
fibonacci.push_back(2);
fibonacci.push_back(3);
fibonacci.push_back(5);
fibonacci.push_back(8);
std::copy(fibonacci.begin(), fibonacci.end(),
RepeatedFieldBackInserter(protobuffer.mutable_repeated_int32()));

halves.push_back(1.0);
halves.push_back(0.5);
halves.push_back(0.25);
halves.push_back(0.125);
halves.push_back(0.0625);
std::copy(halves.begin(), halves.end(),
RepeatedFieldBackInserter(protobuffer.mutable_repeated_double()));

words.push_back("Able");
words.push_back("was");
words.push_back("I");
words.push_back("ere");
words.push_back("I");
words.push_back("saw");
words.push_back("Elba");
std::copy(words.begin(), words.end(),
RepeatedFieldBackInserter(protobuffer.mutable_repeated_string()));

nesteds[0].set_bb(17);
nesteds[1].set_bb(4711);
std::copy(&nesteds[0], &nesteds[2],
RepeatedFieldBackInserter(
protobuffer.mutable_repeated_nested_message()));

nested_ptrs.push_back(new Nested);
nested_ptrs.back()->set_bb(170);
nested_ptrs.push_back(new Nested);
nested_ptrs.back()->set_bb(47110);
std::copy(nested_ptrs.begin(), nested_ptrs.end(),
RepeatedFieldBackInserter(
protobuffer.mutable_repeated_nested_message()));

}

virtual void TearDown() {
STLDeleteContainerPointers(nested_ptrs.begin(), nested_ptrs.end());
}
};

TEST_F(RepeatedFieldInsertionIteratorsTest, Fibonacci) {
EXPECT_TRUE(std::equal(fibonacci.begin(),
fibonacci.end(),
protobuffer.repeated_int32().begin()));
EXPECT_TRUE(std::equal(protobuffer.repeated_int32().begin(),
protobuffer.repeated_int32().end(),
fibonacci.begin()));
}

TEST_F(RepeatedFieldInsertionIteratorsTest, Halves) {
EXPECT_TRUE(std::equal(halves.begin(),
halves.end(),
protobuffer.repeated_double().begin()));
EXPECT_TRUE(std::equal(protobuffer.repeated_double().begin(),
protobuffer.repeated_double().end(),
halves.begin()));
}

TEST_F(RepeatedFieldInsertionIteratorsTest, Words) {
ASSERT_EQ(words.size(), protobuffer.repeated_string_size());
for (int i = 0; i < words.size(); ++i)
EXPECT_EQ(words.at(i), protobuffer.repeated_string(i));
}

TEST_F(RepeatedFieldInsertionIteratorsTest, Words2) {
words.clear();
words.push_back("sing");
words.push_back("a");
words.push_back("song");
words.push_back("of");
words.push_back("six");
words.push_back("pence");
protobuffer.mutable_repeated_string()->Clear();
std::copy(words.begin(), words.end(), RepeatedPtrFieldBackInserter(
protobuffer.mutable_repeated_string()));
ASSERT_EQ(words.size(), protobuffer.repeated_string_size());
for (int i = 0; i < words.size(); ++i)
EXPECT_EQ(words.at(i), protobuffer.repeated_string(i));
}

TEST_F(RepeatedFieldInsertionIteratorsTest, Nesteds) {
ASSERT_EQ(protobuffer.repeated_nested_message_size(), 4);
EXPECT_EQ(protobuffer.repeated_nested_message(0).bb(), 17);
EXPECT_EQ(protobuffer.repeated_nested_message(1).bb(), 4711);
EXPECT_EQ(protobuffer.repeated_nested_message(2).bb(), 170);
EXPECT_EQ(protobuffer.repeated_nested_message(3).bb(), 47110);
}

TEST_F(RepeatedFieldInsertionIteratorsTest,
AllocatedRepeatedPtrFieldWithStringIntData) {
vector<Nested*> data;
TestAllTypes goldenproto;
for (int i = 0; i < 10; ++i) {
Nested* new_data = new Nested;
new_data->set_bb(i);
data.push_back(new_data);

new_data = goldenproto.add_repeated_nested_message();
new_data->set_bb(i);
}
TestAllTypes testproto;
copy(data.begin(), data.end(),
AllocatedRepeatedPtrFieldBackInserter(
testproto.mutable_repeated_nested_message()));
EXPECT_EQ(testproto.DebugString(), goldenproto.DebugString());
}

TEST_F(RepeatedFieldInsertionIteratorsTest,
AllocatedRepeatedPtrFieldWithString) {
vector<string*> data;
TestAllTypes goldenproto;
for (int i = 0; i < 10; ++i) {
string* new_data = new string;
*new_data = "name-" + SimpleItoa(i);
data.push_back(new_data);

new_data = goldenproto.add_repeated_string();
*new_data = "name-" + SimpleItoa(i);
}
TestAllTypes testproto;
copy(data.begin(), data.end(),
AllocatedRepeatedPtrFieldBackInserter(
testproto.mutable_repeated_string()));
EXPECT_EQ(testproto.DebugString(), goldenproto.DebugString());
}

} // namespace

} // namespace protobuf
} // namespace google

Change log

r425 by xiaof...@google.com on Sep 21, 2012   Diff
Down-integrate from internal branch
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Older revisions

r349 by liuj...@google.com on Nov 2, 2010   Diff
Submit recent changes from internal
branch. See CHANGES.txt for more
details.
r262 by ken...@google.com on Dec 21, 2009   Diff
Fix build on MSVC.
r257 by ken...@google.com on Dec 18, 2009   Diff
Fix build on MinGW/Win32 (including
implementing Subprocess using
CreateProcess()).
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