tests: Add check based unit test system

Introduces new unit tests based on `check`. Each subsystem/module can
have its own unit tests in tests/check-<name>.c that will be linked
together in tests/check-all.c.

Running 'make check' will compile and run the unit tests automatically.

A reference unit test implementation has been done for the abstract
address module.

Signed-off-by: Thomas Graf <tgraf@suug.ch>

4 files changed, 271 insertions, 6 deletions

diff --git a/tests/.gitignore b/tests/.gitignore
index b386c45..151e9b5 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -6,3 +6,4 @@ test-delete-link
 test-genl
 test-nf-cache-mngr
 test-socket-creation
+check-all
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 9c0ab8d..6a5606a 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -6,14 +6,23 @@ LDADD = \
 	${top_builddir}/lib/libnl-3.la \
 	${top_builddir}/lib/libnl-nf-3.la \
 	${top_builddir}/lib/libnl-genl-3.la \
-	${top_builddir}/lib/libnl-route-3.la
+	${top_builddir}/lib/libnl-route-3.la \
+	@CHECK_LIBS@
+
+CFLAGS += @CHECK_CFLAGS@
+
+UNIT_TESTS = check-all
 
 check_PROGRAMS = \
 	test-create-bond \
 	test-create-vlan \
 	test-delete-link \
 	test-socket-creation \
-	test-complex-HTB-with-hash-filters
+	test-complex-HTB-with-hash-filters \
+	${UNIT_TESTS}
+
+TESTS = \
+	${UNIT_TESTS}
 
 if ENABLE_CLI
 LDADD += ${top_builddir}/src/lib/libnl-cli-3.la
@@ -23,10 +32,6 @@ check_PROGRAMS += \
 	test-nf-cache-mngr
 endif
 
-# Eventually add these to TESTS once converted to be real
-# test programs
-# TESTS = $(check_PROGRAMS)
-
 test_cache_mngr_SOURCES = test-cache-mngr.c
 test_create_bond_SOURCES = test-create-bond.c
 test_create_vlan_SOURCES = test-create-vlan.c
@@ -35,3 +40,8 @@ test_genl_SOURCES = test-genl.c
 test_nf_cache_mngr_SOURCES = test-nf-cache-mngr.c
 test_socket_creation_SOURCES = test-socket-creation.c
 test_complex_HTB_with_hash_filters_SOURCES = test-complex-HTB-with-hash-filters.c
+
+# Unit tests
+check_all_SOURCES = \
+	check-all.c \
+	check-addr.c
diff --git a/tests/check-addr.c b/tests/check-addr.c
new file mode 100644
index 0000000..39f3ede
--- /dev/null
+++ b/tests/check-addr.c
@@ -0,0 +1,212 @@
+/*
+ * tests/check-addr.c		nl_addr unit tests
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2013 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include <check.h>
+#include <netlink/addr.h>
+
+START_TEST(addr_alloc)
+{
+	struct nl_addr *addr;
+
+	addr = nl_addr_alloc(16);
+	fail_if(addr == NULL,
+		"Allocation should not return NULL");
+
+	fail_if(nl_addr_iszero(addr) == 0,
+		"New empty address should be all zeros");
+
+	fail_if(nl_addr_get_family(addr) != AF_UNSPEC,
+		"New empty address should have family AF_UNSPEC");
+
+	fail_if(nl_addr_get_prefixlen(addr) != 0,
+		"New empty address should have prefix length 0");
+
+	fail_if(nl_addr_shared(addr),
+		"New empty address should not be shared");
+
+	fail_if(nl_addr_get(addr) != addr,
+		"nl_addr_get() should return pointer to address");
+
+	fail_if(nl_addr_shared(addr) == 0,
+		"Address should be shared after call to nl_addr_get()");
+
+	nl_addr_put(addr);
+
+	fail_if(nl_addr_shared(addr),
+		"Address should not be shared after call to nl_addr_put()");
+
+	fail_if(nl_addr_fill_sockaddr(addr, NULL, 0) == 0,
+		"Socket address filling should fail for empty address");
+
+	nl_addr_put(addr);
+}
+END_TEST
+
+START_TEST(addr_binary_addr)
+{
+	struct nl_addr *addr, *addr2;
+	char baddr[4] = { 0x1, 0x2, 0x3, 0x4 };
+	char baddr2[6] = { 0x1, 0x2, 0x3, 0x4, 0x5, 0x6 };
+
+	addr = nl_addr_alloc(4);
+	fail_if(addr == NULL,
+		"Allocation should not return NULL");
+
+	fail_if(nl_addr_set_binary_addr(addr, baddr, 4) < 0,
+		"Valid binary address should be settable");
+
+	fail_if(nl_addr_get_prefixlen(addr) != 0,
+		"Prefix length should be unchanged after nl_addr_set_binary_addr()");
+
+	fail_if(nl_addr_get_len(addr) != 4,
+		"Address length should be 4");
+
+	fail_if(nl_addr_set_binary_addr(addr, baddr2, 6) == 0,
+		"Should not be able to set binary address exceeding maximum length");
+
+	fail_if(nl_addr_get_len(addr) != 4,
+		"Address length should still be 4");
+
+	fail_if(nl_addr_guess_family(addr) != AF_INET,
+		"Binary address of length 4 should be guessed as AF_INET");
+
+	fail_if(memcmp(baddr, nl_addr_get_binary_addr(addr), 4) != 0,
+		"Binary address mismatches");
+
+	addr2 = nl_addr_build(AF_UNSPEC, baddr, 4);
+	fail_if(addr2 == NULL,
+		"Building of address should not fail");
+
+	nl_addr_set_prefixlen(addr, 32);
+	fail_if(nl_addr_get_prefixlen(addr) != 32,
+		"Prefix length should be successful changed after nl_addr_set_prefixlen()");
+
+	fail_if(nl_addr_cmp(addr, addr2),
+		"Addresses built from same binary address should match");
+
+	nl_addr_put(addr);
+	nl_addr_put(addr2);
+}
+END_TEST
+
+START_TEST(addr_parse4)
+{
+	struct nl_addr *addr4, *clone;
+	struct sockaddr_in sin;
+	socklen_t len = sizeof(sin);
+	char *addr_str = "10.0.0.1/16";
+	char buf[128];
+
+	fail_if(nl_addr_parse(addr_str, AF_INET6, &addr4) == 0,
+		"Should not be able to parse IPv4 address in IPv6 mode");
+
+	fail_if(nl_addr_parse(addr_str, AF_UNSPEC, &addr4) != 0,
+		"Should be able to parse \"%s\"", addr_str);
+
+	fail_if(nl_addr_get_family(addr4) != AF_INET,
+		"Address family should be AF_INET");
+
+	fail_if(nl_addr_get_prefixlen(addr4) != 16,
+		"Prefix length should be 16");
+
+	fail_if(nl_addr_iszero(addr4),
+		"Address should not be all zeroes");
+
+	clone = nl_addr_clone(addr4);
+	fail_if(clone == NULL,
+		"Cloned address should not be NULL");
+
+	fail_if(nl_addr_cmp(addr4, clone) != 0,
+		"Cloned address should not mismatch original");
+
+	fail_if(nl_addr_fill_sockaddr(addr4, (struct sockaddr *) &sin, &len) != 0,
+		"Should be able to fill socketaddr");
+
+	fail_if(strcmp(nl_addr2str(addr4, buf, sizeof(buf)), addr_str),
+		"Address translated back to string does not match original");
+
+	nl_addr_put(addr4);
+	nl_addr_put(clone);
+}
+END_TEST
+
+START_TEST(addr_parse6)
+{
+	struct nl_addr *addr6, *clone;
+	struct sockaddr_in6 sin;
+	socklen_t len = sizeof(sin);
+	char *addr_str = "2001:1:2::3/64";
+	char buf[128];
+
+	fail_if(nl_addr_parse(addr_str, AF_INET, &addr6) == 0,
+		"Should not be able to parse IPv6 address in IPv4 mode");
+
+	fail_if(nl_addr_parse(addr_str, AF_UNSPEC, &addr6) != 0,
+		"Should be able to parse \"%s\"", addr_str);
+
+	fail_if(nl_addr_get_family(addr6) != AF_INET6,
+		"Address family should be AF_INET6");
+
+	fail_if(nl_addr_get_prefixlen(addr6) != 64,
+		"Prefix length should be 64");
+
+	fail_if(nl_addr_iszero(addr6),
+		"Address should not be all zeroes");
+
+	clone = nl_addr_clone(addr6);
+	fail_if(clone == NULL,
+		"Cloned address should not be NULL");
+
+	fail_if(nl_addr_cmp(addr6, clone) != 0,
+		"Cloned address should not mismatch original");
+
+	fail_if(nl_addr_fill_sockaddr(addr6, (struct sockaddr *) &sin, &len) != 0,
+		"Should be able to fill socketaddr");
+
+	fail_if(strcmp(nl_addr2str(addr6, buf, sizeof(buf)), addr_str),
+		"Address translated back to string does not match original");
+
+	nl_addr_put(addr6);
+	nl_addr_put(clone);
+}
+END_TEST
+
+START_TEST(addr_info)
+{
+	struct nl_addr *addr;
+	char *addr_str = "127.0.0.1";
+	struct addrinfo *result;
+
+	fail_if(nl_addr_parse(addr_str, AF_UNSPEC, &addr) != 0,
+		"Parsing of valid address should not fail");
+
+	fail_if(nl_addr_info(addr, &result) != 0,
+		"getaddrinfo() on loopback address should work");
+
+	freeaddrinfo(result);
+	nl_addr_put(addr);
+}
+END_TEST
+
+Suite *make_nl_addr_suite(void)
+{
+	Suite *suite = suite_create("Abstract addresses");
+
+	TCase *tc_addr = tcase_create("Core");
+	tcase_add_test(tc_addr, addr_alloc);
+	tcase_add_test(tc_addr, addr_binary_addr);
+	tcase_add_test(tc_addr, addr_parse4);
+	tcase_add_test(tc_addr, addr_parse6);
+	tcase_add_test(tc_addr, addr_info);
+	suite_add_tcase(suite, tc_addr);
+
+	return suite;
+}
diff --git a/tests/check-all.c b/tests/check-all.c
new file mode 100644
index 0000000..e801003
--- /dev/null
+++ b/tests/check-all.c
@@ -0,0 +1,42 @@
+/*
+ * tests/check-all.c		overall unit test program
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2013 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include <check.h>
+
+extern Suite *make_nl_addr_suite(void);
+
+static Suite *main_suite(void)
+{
+	Suite *suite = suite_create("main");
+
+	return suite;
+}
+
+int main(int argc, char *argv[])
+{
+	SRunner *runner;
+	int nfailed;
+	
+	runner = srunner_create(main_suite());
+
+	/* Add testsuites below */
+
+	srunner_add_suite(runner, make_nl_addr_suite());
+
+	/* Do not add testsuites below this line */
+
+	srunner_run_all(runner, CK_ENV);
+
+	nfailed = srunner_ntests_failed(runner);
+	srunner_free(runner);
+
+	return nfailed != 0;
+}