cosmopolitan/test/libc/dns/dnsnamecmp_test.c

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2020-06-15 14:18:57 +00:00
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "libc/dns/dns.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
TEST(dnsnamecmp, testEmpty) {
char *A = strcpy(tmalloc(1), "");
char *B = strcpy(tmalloc(1), "");
EXPECT_EQ(dnsnamecmp(A, B), 0);
EXPECT_EQ(dnsnamecmp(A, A), 0);
tfree(B);
tfree(A);
}
TEST(dnsnamecmp, testDotless_caseInsensitiveBehavior) {
char *A = tmalloc(2);
char *B = tmalloc(2);
EXPECT_EQ(dnsnamecmp(strcpy(A, "a"), strcpy(B, "a")), 0);
EXPECT_EQ(dnsnamecmp(A, A), 0);
EXPECT_EQ(dnsnamecmp(strcpy(A, "a"), strcpy(B, "A")), 0);
EXPECT_EQ(dnsnamecmp(strcpy(A, "A"), strcpy(B, "a")), 0);
EXPECT_LT(dnsnamecmp(strcpy(A, "a"), strcpy(B, "b")), 0);
EXPECT_LT(dnsnamecmp(strcpy(A, "a"), strcpy(B, "B")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "d"), strcpy(B, "a")), 0);
tfree(B);
tfree(A);
}
TEST(dnsnamecmp, testMultiLabel_lexiReverse) {
char *A = tmalloc(16);
char *B = tmalloc(16);
EXPECT_EQ(dnsnamecmp(strcpy(A, "a.example"), strcpy(B, "a.example")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "b.example"), strcpy(B, "a.example")), 0);
EXPECT_LT(dnsnamecmp(strcpy(A, "b.example"), strcpy(B, "a.examplz")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "a.zxample"), strcpy(B, "a.examplz")), 0);
EXPECT_EQ(dnsnamecmp(strcpy(A, "c.a.example"), strcpy(B, "c.a.example")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "d.a.example"), strcpy(B, "c.a.example")), 0);
EXPECT_LT(dnsnamecmp(strcpy(A, "cat.example"), strcpy(B, "lol.example")), 0);
tfree(B);
tfree(A);
}
TEST(dnsnamecmp, testTldDotQualifier_canBeEqualToDottedNames) {
char *A = tmalloc(16);
char *B = tmalloc(16);
EXPECT_EQ(dnsnamecmp(strcpy(B, "aaa.example."), strcpy(A, "aaa.example")), 0);
tfree(B);
tfree(A);
}
TEST(dnsnamecmp, testFullyQualified_alwaysComesFirst) {
char *A = tmalloc(16);
char *B = tmalloc(16);
EXPECT_LT(dnsnamecmp(strcpy(B, "aaa.example."), strcpy(A, "zzz")), 0);
EXPECT_LT(dnsnamecmp(strcpy(B, "zzz.example."), strcpy(A, "aaa")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "zzz"), strcpy(B, "aaa.example.")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "aaa"), strcpy(B, "zzz.example.")), 0);
tfree(B);
tfree(A);
}
TEST(dnsnamecmp, testLikelySld_alwaysComesBeforeLocalName) {
char *A = tmalloc(16);
char *B = tmalloc(16);
EXPECT_LT(dnsnamecmp(strcpy(B, "z.e"), strcpy(A, "a")), 0);
EXPECT_LT(dnsnamecmp(strcpy(B, "aaa.example"), strcpy(A, "zzz")), 0);
EXPECT_LT(dnsnamecmp(strcpy(B, "zzz.example"), strcpy(A, "aaa")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "zzz"), strcpy(B, "aaa.example")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "aaa"), strcpy(B, "zzz.example")), 0);
tfree(B);
tfree(A);
}
TEST(dnsnamecmp, testLikelySubdomain_alwaysComesAfterSld) {
char *A = tmalloc(16);
char *B = tmalloc(16);
EXPECT_LT(dnsnamecmp(strcpy(B, "a.e"), strcpy(A, "z.a.e")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "z.a.e"), strcpy(B, "a.e")), 0);
EXPECT_LT(dnsnamecmp(strcpy(B, "b.e"), strcpy(A, "a.b.e")), 0);
EXPECT_GT(dnsnamecmp(strcpy(A, "a.b.e"), strcpy(B, "b.e")), 0);
tfree(B);
tfree(A);
}