85 lines
3.8 KiB
C
85 lines
3.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/alg/alg.h"
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#include "libc/bits/bits.h"
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#include "libc/dce.h"
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#include "libc/mem/mem.h"
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#include "libc/nexgen32e/x86feature.h"
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#include "libc/runtime/gc.h"
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#include "libc/str/internal.h"
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#include "libc/testlib/testlib.h"
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#define MAKESTRING(NAME, VALUE) \
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char *NAME = strcpy(tmalloc(sizeof(VALUE) + 16), VALUE)
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char *strstr$kmp(const char *haystak, const char *needle) {
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return memmem(haystak, strlen(haystak), needle, strlen(needle));
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}
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char *(*strstri)(const char *, const char *) = strstr$kmp;
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FIXTURE(strstr, sse42) {
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if (X86_HAVE(SSE4_2)) {
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strstri = strstr$sse42;
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}
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}
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TEST(strstr, test_emptyString_isFoundAtBeginning) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_STREQ(&haystack[0], strstri(haystack, gc(strdup(""))));
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ASSERT_STREQ(&haystack[0], strstr(haystack, gc(strdup(""))));
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tfree(haystack);
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}
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TEST(strstr, test_notFound) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_EQ(NULL, strstri(haystack, gc(strdup("xyz"))));
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ASSERT_EQ(NULL, strstr(haystack, gc(strdup("xyz"))));
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tfree(haystack);
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}
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TEST(strstr, test_middleOfString) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_STREQ(&haystack[3], strstri(haystack, gc(strdup("123"))));
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ASSERT_STREQ(&haystack[3], strstr(haystack, gc(strdup("123"))));
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tfree(haystack);
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}
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TEST(strstr, test_endOfString) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_STREQ(&haystack[8], strstri(haystack, gc(strdup("f"))));
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ASSERT_STREQ(&haystack[8], strstr(haystack, gc(strdup("f"))));
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tfree(haystack);
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}
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TEST(strstr, test_secondXmmWord) {
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MAKESTRING(haystack, "eeeeeeeeeeeeeeeebbbbbbbbbbb123");
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ASSERT_STREQ(&haystack[27], strstri(haystack, gc(strdup("123"))));
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ASSERT_STREQ(&haystack[27], strstr(haystack, gc(strdup("123"))));
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tfree(haystack);
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}
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TEST(strstr, test_overlapsXmmWords) {
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MAKESTRING(haystack, "eeeeeeeeeeeeeeeebbbbbbbbbbbbbbb");
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ASSERT_STREQ(&haystack[15], strstri(haystack, gc(strdup("eb"))));
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ASSERT_STREQ(&haystack[15], strstr(haystack, gc(strdup("eb"))));
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tfree(haystack);
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}
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