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ipv6_address_tests.cpp
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///////////////////////////////////////////////////////////////////////////////
// Copyright (c) Lewis Baker
// Licenced under MIT license. See LICENSE.txt for details.
///////////////////////////////////////////////////////////////////////////////
#include <cppcoro/net/ipv6_address.hpp>
#include "doctest/cppcoro_doctest.h"
TEST_SUITE_BEGIN("ipv6_address");
using cppcoro::net::ipv6_address;
TEST_CASE("default constructor")
{
ipv6_address zero;
for (std::uint8_t i = 0; i < 16; ++i)
{
CHECK(zero.bytes()[i] == 0);
}
CHECK(zero == ipv6_address::unspecified());
}
TEST_CASE("to_string")
{
CHECK(ipv6_address(0, 0).to_string() == "::");
CHECK(ipv6_address::loopback().to_string() == "::1");
CHECK(
ipv6_address(0x0102030405060708, 0x090A0B0C0D0E0F10).to_string() ==
"102:304:506:708:90a:b0c:d0e:f10");
CHECK(
ipv6_address(0x0001001001001000, 0x0).to_string() ==
"1:10:100:1000::");
CHECK(
ipv6_address(0x0002030405060708, 0x090A0B0C0D0E0F10).to_string() ==
"2:304:506:708:90a:b0c:d0e:f10");
CHECK(
ipv6_address(0x0000030405060708, 0x090A0B0C0D0E0F10).to_string() ==
"0:304:506:708:90a:b0c:d0e:f10");
CHECK(
ipv6_address(0x0000000005060708, 0x090A0B0C0D0E0F10).to_string() ==
"::506:708:90a:b0c:d0e:f10");
CHECK(
ipv6_address(0x0102030400000000, 0x00000B0C0D0E0F10).to_string() ==
"102:304::b0c:d0e:f10");
CHECK(
ipv6_address(0x0102030405060708, 0x090A0B0C0D0E0000).to_string() ==
"102:304:506:708:90a:b0c:d0e:0");
CHECK(
ipv6_address(0x0102030405060708, 0x090A0B0C00000000).to_string() ==
"102:304:506:708:90a:b0c::");
// Check that it contracts the first of multiple equal-length zero runs.
CHECK(
ipv6_address(0x0102030400000000, 0x090A0B0C00000000).to_string() ==
"102:304::90a:b0c:0:0");
}
TEST_CASE("from_string")
{
CHECK(ipv6_address::from_string("") == std::nullopt);
CHECK(ipv6_address::from_string("123") == std::nullopt);
CHECK(ipv6_address::from_string("foo") == std::nullopt);
CHECK(ipv6_address::from_string(":1234") == std::nullopt);
CHECK(ipv6_address::from_string("0102:0304:0506:0708:090a:0b0c:0d0e:0f10 ") == std::nullopt);
CHECK(
ipv6_address::from_string(" 0102:0304:0506:0708:090a:0b0c:0d0e:0f10") ==
std::nullopt);
CHECK(
ipv6_address::from_string("0102:0304:0506:0708:090a:0b0c:0d0e:0f10:") ==
std::nullopt);
CHECK(
ipv6_address::from_string("0102:0304:0506:0708:090a:0b0c:0d0e") ==
std::nullopt);
CHECK(
ipv6_address::from_string("01022:0304:0506:0708:090a:0b0c:0d0e:0f10") ==
std::nullopt);
CHECK(
ipv6_address::from_string("0102:0304:0506:192.168.0.1:0b0c:0d0e:0f10") ==
std::nullopt);
CHECK(ipv6_address::from_string("::") == ipv6_address(0, 0));
CHECK(ipv6_address::from_string("::1") == ipv6_address::loopback());
CHECK(ipv6_address::from_string("::01") == ipv6_address::loopback());
CHECK(ipv6_address::from_string("::001") == ipv6_address::loopback());
CHECK(ipv6_address::from_string("::0001") == ipv6_address::loopback());
CHECK(
ipv6_address::from_string("0102:0304:0506:0708:090a:0b0c:0d0e:0f10") ==
ipv6_address(0x0102030405060708, 0x090A0B0C0D0E0F10));
CHECK(
ipv6_address::from_string("0002:0304:0506:0708:090a:0b0c:0d0e:0f10") ==
ipv6_address(0x0002030405060708, 0x090A0B0C0D0E0F10));
CHECK(
ipv6_address::from_string("0000:0304:0506:0708:090a:0b0c:0d0e:0f10") ==
ipv6_address(0x0000030405060708, 0x090A0B0C0D0E0F10));
CHECK(
ipv6_address::from_string("::0506:0708:090a:0b0c:0d0e:0f10") ==
ipv6_address(0x0000000005060708, 0x090A0B0C0D0E0F10));
CHECK(
ipv6_address::from_string("0102:0304::0b0c:0d0e:0f10") ==
ipv6_address(0x0102030400000000, 0x00000B0C0D0E0F10));
CHECK(
ipv6_address::from_string("0102:0304:0506:0708:090a:0b0c::") ==
ipv6_address(0x0102030405060708, 0x090A0B0C00000000));
CHECK(
ipv6_address::from_string("2001:db8:85a3:8d3:1319:8a2e:370:7348") ==
ipv6_address(0x20010db885a308d3, 0x13198a2e03707348));
}
TEST_CASE("round-trip and normalization")
{
auto check_round_trip = [](const char* s) {
auto p = ipv6_address::from_string(s);
REQUIRE(p.has_value());
auto canon = p->to_string();
auto p2 = ipv6_address::from_string(canon);
REQUIRE(p2.has_value());
CHECK(*p == *p2);
CHECK(p2->to_string() == canon);
};
// Basic
check_round_trip("::");
check_round_trip("::1");
check_round_trip("FFFF:0000:0000:0000:0000:0000:0000:0001");
// Mixed case input should normalise to lower-case
check_round_trip("AbCd:Ef01::");
// IPv4 interop
check_round_trip("::ffff:192.168.0.1");
// Ordering stability already covered elsewhere; here just ensure canonical contraction is stable
auto p = ipv6_address::from_string("0001:0010:0100:1000::");
REQUIRE(p.has_value());
CHECK(p->to_string() == std::string("1:10:100:1000::"));
}
TEST_CASE("from_string IPv4 interop format")
{
CHECK(
ipv6_address::from_string("::ffff:192.168.0.1") ==
ipv6_address(0x0, 0xffffc0a80001));
CHECK(
ipv6_address::from_string("0102:0304::128.69.32.17") ==
ipv6_address(0x0102030400000000, 0x0000000080452011));
CHECK(
ipv6_address::from_string("0102:0304::128.69.32.17") ==
ipv6_address(0x0102030400000000, 0x0000000080452011));
// Hexadecimal chars in dotted decimal part
CHECK(ipv6_address::from_string("64:ff9b::12f.100.30.1") == std::nullopt);
CHECK(ipv6_address::from_string("64:ff9b::123.10a.30.1") == std::nullopt);
CHECK(ipv6_address::from_string("64:ff9b::123.100.3d.1") == std::nullopt);
CHECK(ipv6_address::from_string("64:ff9b::12f.100.30.f4") == std::nullopt);
// Overflow of individual parts of dotted decimal notation
CHECK(ipv6_address::from_string("::ffff:456.12.45.30") == std::nullopt);
CHECK(ipv6_address::from_string("::ffff:45.256.45.30") == std::nullopt);
CHECK(ipv6_address::from_string("::ffff:45.25.677.30") == std::nullopt);
CHECK(ipv6_address::from_string("::ffff:123.12.45.301") == std::nullopt);
}
TEST_CASE("operator<")
{
ipv6_address a(0x0, 0x1);
ipv6_address b(0xff00000000000011, 0xee00000000000022);
ipv6_address c(0xee00000000000022, 0xee00000000000022);
ipv6_address d(0xee00000000000022, 0xff00000000000011);
CHECK(a <= a);
CHECK(a < b);
CHECK(a < c);
CHECK(a < d);
CHECK(b >= b);
CHECK(b > c);
CHECK(b > d);
CHECK(c < d);
}
TEST_SUITE_END();