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