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// Copyright (c) 2006-2008 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 "base/tuple.h"
#include "base/compiler_specific.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
void DoAdd(int a, int b, int c, int* res) {
*res = a + b + c;
}
struct Addy {
Addy() { }
void DoAdd(int a, int b, int c, int d, int* res) {
*res = a + b + c + d;
}
};
struct Addz {
Addz() { }
void DoAdd(int a, int b, int c, int d, int e, int* res) {
*res = a + b + c + d + e;
}
};
} // namespace
TEST(TupleTest, Basic) {
Tuple0 t0 ALLOW_UNUSED = MakeTuple();
Tuple1<int> t1(1);
Tuple2<int, const char*> t2 = MakeTuple(1, static_cast<const char*>("wee"));
Tuple3<int, int, int> t3(1, 2, 3);
Tuple4<int, int, int, int*> t4(1, 2, 3, &t1.a);
Tuple5<int, int, int, int, int*> t5(1, 2, 3, 4, &t4.a);
Tuple6<int, int, int, int, int, int*> t6(1, 2, 3, 4, 5, &t4.a);
EXPECT_EQ(1, t1.a);
EXPECT_EQ(1, t2.a);
EXPECT_EQ(1, t3.a);
EXPECT_EQ(2, t3.b);
EXPECT_EQ(3, t3.c);
EXPECT_EQ(1, t4.a);
EXPECT_EQ(2, t4.b);
EXPECT_EQ(3, t4.c);
EXPECT_EQ(1, t5.a);
EXPECT_EQ(2, t5.b);
EXPECT_EQ(3, t5.c);
EXPECT_EQ(4, t5.d);
EXPECT_EQ(1, t6.a);
EXPECT_EQ(2, t6.b);
EXPECT_EQ(3, t6.c);
EXPECT_EQ(4, t6.d);
EXPECT_EQ(5, t6.e);
EXPECT_EQ(1, t1.a);
DispatchToFunction(&DoAdd, t4);
EXPECT_EQ(6, t1.a);
int res = 0;
DispatchToFunction(&DoAdd, MakeTuple(9, 8, 7, &res));
EXPECT_EQ(24, res);
Addy addy;
EXPECT_EQ(1, t4.a);
DispatchToMethod(&addy, &Addy::DoAdd, t5);
EXPECT_EQ(10, t4.a);
Addz addz;
EXPECT_EQ(10, t4.a);
DispatchToMethod(&addz, &Addz::DoAdd, t6);
EXPECT_EQ(15, t4.a);
}
namespace {
struct CopyLogger {
CopyLogger() { ++TimesConstructed; }
CopyLogger(const CopyLogger& tocopy) { ++TimesConstructed; ++TimesCopied; }
~CopyLogger() { }
static int TimesCopied;
static int TimesConstructed;
};
void SomeLoggerMethRef(const CopyLogger& logy, const CopyLogger* ptr, bool* b) {
*b = &logy == ptr;
}
void SomeLoggerMethCopy(CopyLogger logy, const CopyLogger* ptr, bool* b) {
*b = &logy == ptr;
}
int CopyLogger::TimesCopied = 0;
int CopyLogger::TimesConstructed = 0;
} // namespace
TEST(TupleTest, Copying) {
CopyLogger logger;
EXPECT_EQ(0, CopyLogger::TimesCopied);
EXPECT_EQ(1, CopyLogger::TimesConstructed);
bool res = false;
// Creating the tuple should copy the class to store internally in the tuple.
Tuple3<CopyLogger, CopyLogger*, bool*> tuple(logger, &logger, &res);
tuple.b = &tuple.a;
EXPECT_EQ(2, CopyLogger::TimesConstructed);
EXPECT_EQ(1, CopyLogger::TimesCopied);
// Our internal Logger and the one passed to the function should be the same.
res = false;
DispatchToFunction(&SomeLoggerMethRef, tuple);
EXPECT_TRUE(res);
EXPECT_EQ(2, CopyLogger::TimesConstructed);
EXPECT_EQ(1, CopyLogger::TimesCopied);
// Now they should be different, since the function call will make a copy.
res = false;
DispatchToFunction(&SomeLoggerMethCopy, tuple);
EXPECT_FALSE(res);
EXPECT_EQ(3, CopyLogger::TimesConstructed);
EXPECT_EQ(2, CopyLogger::TimesCopied);
}
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