From 5117c20ab5558e5d68b1a3c7751610cd6c4279db Mon Sep 17 00:00:00 2001 From: Pieter Noordhuis Date: Mon, 13 Aug 2012 14:09:40 -0700 Subject: [PATCH] Add ziplist test for deleting next to last entries --- src/ziplist.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/src/ziplist.c b/src/ziplist.c index 76a2cdde..8ada7c42 100644 --- a/src/ziplist.c +++ b/src/ziplist.c @@ -1034,6 +1034,22 @@ int randstring(char *target, unsigned int min, unsigned int max) { return len; } +void verify(unsigned char *zl, zlentry *e) { + int i; + int len = ziplistLen(zl); + zlentry _e; + + for (i = 0; i < len; i++) { + memset(&e[i], 0, sizeof(zlentry)); + e[i] = zipEntry(ziplistIndex(zl, i)); + + memset(&_e, 0, sizeof(zlentry)); + _e = zipEntry(ziplistIndex(zl, -len+i)); + + assert(memcmp(&e[i], &_e, sizeof(zlentry)) == 0); + } +} + int main(int argc, char **argv) { unsigned char *zl, *p; unsigned char *entry; @@ -1315,6 +1331,43 @@ int main(int argc, char **argv) { printf("SUCCESS\n\n"); } + printf("Regression test deleting next to last entries:\n"); + { + char v[3][257]; + zlentry e[3]; + int i; + + for (i = 0; i < (sizeof(v)/sizeof(v[0])); i++) { + memset(v[i], 'a' + i, sizeof(v[0])); + } + + v[0][256] = '\0'; + v[1][ 1] = '\0'; + v[2][256] = '\0'; + + zl = ziplistNew(); + for (i = 0; i < (sizeof(v)/sizeof(v[0])); i++) { + zl = ziplistPush(zl, (unsigned char *) v[i], strlen(v[i]), ZIPLIST_TAIL); + } + + verify(zl, e); + + assert(e[0].prevrawlensize == 1); + assert(e[1].prevrawlensize == 5); + assert(e[2].prevrawlensize == 1); + + /* Deleting entry 1 will increase `prevrawlensize` for entry 2 */ + unsigned char *p = e[1].p; + zl = ziplistDelete(zl, &p); + + verify(zl, e); + + assert(e[0].prevrawlensize == 1); + assert(e[1].prevrawlensize == 5); + + printf("SUCCESS\n\n"); + } + printf("Create long list and check indices:\n"); { zl = ziplistNew();