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// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
#include "absl/strings/internal/str_format/arg.h"
#include <ostream>
#include <string>
#include "gtest/gtest.h"
#include "absl/strings/str_format.h"
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace str_format_internal {
namespace {
class FormatArgImplTest : public ::testing::Test {
public:
enum Color { kRed, kGreen, kBlue };
static const char *hi() { return "hi"; }
};
TEST_F(FormatArgImplTest, ToInt) {
int out = 0;
EXPECT_TRUE(FormatArgImplFriend::ToInt(FormatArgImpl(1), &out));
EXPECT_EQ(1, out);
EXPECT_TRUE(FormatArgImplFriend::ToInt(FormatArgImpl(-1), &out));
EXPECT_EQ(-1, out);
EXPECT_TRUE(
FormatArgImplFriend::ToInt(FormatArgImpl(static_cast<char>(64)), &out));
EXPECT_EQ(64, out);
EXPECT_TRUE(FormatArgImplFriend::ToInt(
FormatArgImpl(static_cast<unsigned long long>(123456)), &out)); // NOLINT
EXPECT_EQ(123456, out);
EXPECT_TRUE(FormatArgImplFriend::ToInt(
FormatArgImpl(static_cast<unsigned long long>( // NOLINT
std::numeric_limits<int>::max()) +
1),
&out));
EXPECT_EQ(std::numeric_limits<int>::max(), out);
EXPECT_TRUE(FormatArgImplFriend::ToInt(
FormatArgImpl(static_cast<long long>( // NOLINT
std::numeric_limits<int>::min()) -
10),
&out));
EXPECT_EQ(std::numeric_limits<int>::min(), out);
EXPECT_TRUE(FormatArgImplFriend::ToInt(FormatArgImpl(false), &out));
EXPECT_EQ(0, out);
EXPECT_TRUE(FormatArgImplFriend::ToInt(FormatArgImpl(true), &out));
EXPECT_EQ(1, out);
EXPECT_FALSE(FormatArgImplFriend::ToInt(FormatArgImpl(2.2), &out));
EXPECT_FALSE(FormatArgImplFriend::ToInt(FormatArgImpl(3.2f), &out));
EXPECT_FALSE(FormatArgImplFriend::ToInt(
FormatArgImpl(static_cast<int *>(nullptr)), &out));
EXPECT_FALSE(FormatArgImplFriend::ToInt(FormatArgImpl(hi()), &out));
EXPECT_FALSE(FormatArgImplFriend::ToInt(FormatArgImpl("hi"), &out));
EXPECT_TRUE(FormatArgImplFriend::ToInt(FormatArgImpl(kBlue), &out));
EXPECT_EQ(2, out);
}
extern const char kMyArray[];
TEST_F(FormatArgImplTest, CharArraysDecayToCharPtr) {
const char* a = "";
EXPECT_EQ(FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl(a)),
FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl("")));
EXPECT_EQ(FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl(a)),
FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl("A")));
EXPECT_EQ(FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl(a)),
FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl("ABC")));
EXPECT_EQ(FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl(a)),
FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl(kMyArray)));
}
TEST_F(FormatArgImplTest, OtherPtrDecayToVoidPtr) {
auto expected = FormatArgImplFriend::GetVTablePtrForTest(
FormatArgImpl(static_cast<void *>(nullptr)));
EXPECT_EQ(FormatArgImplFriend::GetVTablePtrForTest(
FormatArgImpl(static_cast<int *>(nullptr))),
expected);
EXPECT_EQ(FormatArgImplFriend::GetVTablePtrForTest(
FormatArgImpl(static_cast<volatile int *>(nullptr))),
expected);
auto p = static_cast<void (*)()>([] {});
EXPECT_EQ(FormatArgImplFriend::GetVTablePtrForTest(FormatArgImpl(p)),
expected);
}
TEST_F(FormatArgImplTest, WorksWithCharArraysOfUnknownSize) {
std::string s;
FormatSinkImpl sink(&s);
ConversionSpec conv;
FormatConversionSpecImplFriend::SetConversionChar(ConversionChar::s, &conv);
FormatConversionSpecImplFriend::SetFlags(Flags(), &conv);
FormatConversionSpecImplFriend::SetWidth(-1, &conv);
FormatConversionSpecImplFriend::SetPrecision(-1, &conv);
EXPECT_TRUE(
FormatArgImplFriend::Convert(FormatArgImpl(kMyArray), conv, &sink));
sink.Flush();
EXPECT_EQ("ABCDE", s);
}
const char kMyArray[] = "ABCDE";
} // namespace
} // namespace str_format_internal
ABSL_NAMESPACE_END
} // namespace absl
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