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af3ee9a8ba
The tests are written in C++11, using the GoogleTest and GoogleMock
frameworks. They have their own independent autoconf setup, so that
users of the library need not have a C++ compiler just to get c-ares
working (however, the test/configure.ac file does assume the use of
a shared top-level m4/ directory). However, this autoconf setup has
only been tested on Linux and OSX so far.
Run with "./arestest", or "./arestest -v" to see extra debug info.
The GoogleTest options for running specific tests are also
available (e.g. "./arestest --gtest_filter=*Live*").
The tests are nowhere near complete yet (currently hitting around
60% coverage as reported by gcov), but they do include examples
of a few different styles of testing:
- There are live tests (ares-test-live.cc), which assume that the
current machine has a valid DNS setup and connection to the
internet; these tests issue queries for real domains but don't
particularly check what gets returned. The tests will fail on
an offline machine.
- There a few mock tests (ares-test-mock.cc) that set up a fake DNS
server and inject its port into the c-ares library configuration.
These tests allow specific response messages to be crafted and
injected, and so are likely to be used for many more tests in
future.
- To make this generation/injection easier, the dns-proto.h file
includes C++ helper classes for building DNS packets.
- Other library entrypoints that don't require network activity
(e.g. ares_parse_*_reply) are tested directly.
- There are few tests of library-internal functions that are not
normally visible to API users (in ares-test-internal.cc).
- A couple of the tests use a helper method of the test fixture to
inject memory allocation failures, using the earlier change to the
library to allow override of malloc/realloc/free.
- There is also an entrypoint to allow Clang's libfuzzer to drive
the packet parsing code in ares_parse_*_reply, together with a
standalone wrapper for it (./aresfuzz) to allow use of afl-fuzz
for further fuzz testing.
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
#include "ares-test.h"
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#include "dns-proto.h"
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extern "C" {
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#include "ares_nowarn.h"
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#include "ares_inet_net_pton.h"
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#include "bitncmp.h"
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}
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#include <string>
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#include <vector>
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namespace ares {
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namespace test {
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TEST_F(LibraryTest, InetPtoN) {
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struct in_addr a4;
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struct in6_addr a6;
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#ifdef DISABLED
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EXPECT_EQ(1, ares_inet_net_pton(AF_INET, "1.2.3.4", &a4, sizeof(a4)));
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EXPECT_EQ(1, ares_inet_net_pton(AF_INET6, "12:34::ff", &a6, sizeof(a6)));
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EXPECT_EQ(1, ares_inet_net_pton(AF_INET6, "12:34::ffff:1.2.3.4", &a6, sizeof(a6)));
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EXPECT_EQ(0, ares_inet_net_pton(AF_INET, "xyzzy", &a4, sizeof(a4)));
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EXPECT_EQ(-1, ares_inet_net_pton(AF_INET+AF_INET6, "1.2.3.4", &a4, sizeof(a4)));
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#endif
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EXPECT_EQ(1, ares_inet_pton(AF_INET, "1.2.3.4", &a4));
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EXPECT_EQ(1, ares_inet_pton(AF_INET6, "12:34::ff", &a6));
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EXPECT_EQ(1, ares_inet_pton(AF_INET6, "12:34::ffff:1.2.3.4", &a6));
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EXPECT_EQ(0, ares_inet_pton(AF_INET, "xyzzy", &a4));
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EXPECT_EQ(-1, ares_inet_pton(AF_INET+AF_INET6, "1.2.3.4", &a4));
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}
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#ifdef DISABLED
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TEST(Misc, Bitncmp) {
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byte a[4] = {0x80, 0x01, 0x02, 0x03};
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byte b[4] = {0x80, 0x01, 0x02, 0x04};
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EXPECT_EQ(-1, ares__bitncmp(a, b, sizeof(a)*8));
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EXPECT_EQ(1, ares__bitncmp(b, a, sizeof(a)*8));
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EXPECT_EQ(0, ares__bitncmp(a, a, sizeof(a)*8));
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}
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TEST_F(LibraryTest, Casts) {
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ssize_t ssz = 100;
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unsigned int u = 100;
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int i = 100;
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unsigned int ru = aresx_sztoui(ssz);
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EXPECT_EQ(u, ru);
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int ri = aresx_sztosi(ssz);
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EXPECT_EQ(i, ri);
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}
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#endif
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} // namespace test
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} // namespace ares
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