blob: a955e9c3a4bfca03c4a7dbc622b429d6baedf1d0 [file] [log] [blame]
// Copyright 2018 The Fuchsia 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 "lib/fostr/hex_dump.h"
#include <sstream>
#include "gtest/gtest.h"
namespace fostr {
namespace {
// Tests formatting hex dump of null pointer.
TEST(HexDump, Null) {
std::ostringstream os;
static const char* null = nullptr;
// Actually passing nullptr (instead of null) doesn't work.
os << Indent << "null:" << fostr::HexDump(null, 0, 0);
EXPECT_EQ("null:<null>", os.str());
}
// Tests formatting hex dump of a zero-length buffer.
TEST(HexDump, ZeroLength) {
std::ostringstream os;
static const char buffer[] = "turducken";
os << Indent << "empty:" << fostr::HexDump(buffer, 0, 0);
EXPECT_EQ("empty:<zero bytes at 0000>", os.str());
}
// Tests formatting hex dump of a nominal buffer.
TEST(HexDump, Normal) {
std::ostringstream os;
static const char buffer[] = "turducken";
os << Indent << "full:" << fostr::HexDump(buffer, sizeof(buffer), 0);
EXPECT_EQ(
"full:"
"\n 0000 74 75 72 64 75 63 6b 65 6e 00 "
"turducken. ",
os.str());
}
// Tests formatting hex dump of a nominal buffer filling one line.
TEST(HexDump, NormalFillOneLine) {
std::ostringstream os;
static const char buffer[] = "cold turducken";
os << Indent << "one full line:" << fostr::HexDump(buffer, sizeof(buffer), 0);
EXPECT_EQ(
"one full line:"
"\n 0000 63 6f 6c 64 20 74 75 72 64 75 63 6b 65 6e 00 "
"cold turducken. ",
os.str());
}
// Tests formatting hex dump of a nominal buffer that fills more than one line.
TEST(HexDump, NormalMoreThanOneLine) {
std::ostringstream os;
static const char buffer[] = "cold turducken leftovers";
os << Indent
<< "more than one line:" << fostr::HexDump(buffer, sizeof(buffer), 0);
EXPECT_EQ(
"more than one line:"
"\n 0000 63 6f 6c 64 20 74 75 72 64 75 63 6b 65 6e 20 6c "
"cold turducken l"
"\n 0010 65 66 74 6f 76 65 72 73 00 "
"eftovers. ",
os.str());
}
// Tests formatting hex dump of a nominal buffer with a non-zero initial
// address.
TEST(HexDump, InitialAddress) {
std::ostringstream os;
static const char buffer[] = "turducken";
os << Indent << "full:" << fostr::HexDump(buffer, sizeof(buffer), 0x1234);
EXPECT_EQ(
"full:"
"\n 1234 74 75 72 64 75 63 6b 65 6e 00 "
"turducken. ",
os.str());
}
// Tests formatting hex dump of a nominal buffer with a large initial address.
TEST(HexDump, LargeInitialAddress) {
std::ostringstream os;
static const char buffer[] = "turducken";
os << Indent << "full:" << fostr::HexDump(buffer, sizeof(buffer), 0x12345);
EXPECT_EQ(
"full:"
"\n 00012345 74 75 72 64 75 63 6b 65 6e 00 "
"turducken. ",
os.str());
}
// Tests formatting hex dump of a nominal buffer with a huge initial address.
TEST(HexDump, HugeInitialAddress) {
std::ostringstream os;
static const char buffer[] = "turducken";
os << Indent
<< "full:" << fostr::HexDump(buffer, sizeof(buffer), 0x123456789);
EXPECT_EQ(
"full:"
"\n 0000000123456789 74 75 72 64 75 63 6b 65 6e 00 "
" turducken. ",
os.str());
}
// Tests formatting hex dump of a nominal buffer using the actual address of
// the buffer.
TEST(HexDump, ActualAddress) {
std::ostringstream os;
std::ostringstream os_expected;
static const char buffer[] = "turducken";
os << Indent << "full:" << fostr::HexDump(buffer, sizeof(buffer));
size_t address = reinterpret_cast<size_t>(&buffer[0]);
int address_width = 16;
if (address < 0x10000) {
address_width = 4;
} else if (address < 0x100000000) {
address_width = 8;
}
os_expected << "full:"
"\n "
<< std::hex << std::setw(address_width) << std::setfill('0')
<< address << std::setfill(' ') << std::dec
<< " 74 75 72 64 75 63 6b 65 6e 00 "
"turducken. ";
EXPECT_EQ(os_expected.str(), os.str());
}
} // namespace
} // namespace fostr