84 lines
3.8 KiB
C
84 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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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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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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