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