add tests for libc strncasecmp

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

2 files changed, 17 insertions, 0 deletions

diff --git a/libc/test/run-memops-test.c b/libc/test/run-memops-test.c
index e6fc7d0..a4179eb 100644
--- a/libc/test/run-memops-test.c
+++ b/libc/test/run-memops-test.c
@@ -49,6 +49,7 @@ int test_memcmp(const void *ptr1, const void *ptr2, size_t n, int expected);
 int test_strcmp(const void *ptr1, const void *ptr2, int expected);
 int test_strchr(const char *s, int c, char *expected);
 int test_strcasecmp(const char *s1, const char *s2, int expected);
+int test_strncasecmp(const char *s1, const char *s2, size_t n, int expected);
 
 int test_memset(char* buf, int c, size_t s)
 {
@@ -87,3 +88,8 @@ int test_strcasecmp(const char *s1, const char *s2, int expected)
 {
 	return(expected == strcasecmp(s1, s2));
 }
+
+int test_strncasecmp(const char *s1, const char *s2, size_t n, int expected)
+{
+	return(expected == strncasecmp(s1, s2, n));
+}
diff --git a/libc/test/run-memops.c b/libc/test/run-memops.c
index 50b2cab..21f6ab6 100644
--- a/libc/test/run-memops.c
+++ b/libc/test/run-memops.c
@@ -27,6 +27,7 @@ int test_memcmp(const void *ptr1, const void *ptr2, size_t n, int expected);
 int test_strcmp(const void *ptr1, const void *ptr2, int expected);
 int test_strchr(const char *s, int c, char *expected);
 int test_strcasecmp(const char *s1, const char *s2, int expected);
+int test_strncasecmp(const char *s1, const char *s2, size_t n, int expected);
 
 int main(void)
 {
@@ -66,6 +67,16 @@ int main(void)
 	assert(test_strcasecmp(buf, "IELLO world!", -1));
 	assert(test_strcasecmp(buf, "HeLLo WOrlc!", 1));
 
+	assert(test_strncasecmp(buf, "Hello World!", strlen(buf), 0));
+	assert(test_strncasecmp(buf, "HELLO WORLD!", strlen(buf), 0));
+	assert(test_strncasecmp(buf, "IELLO world!", strlen(buf), -1));
+	assert(test_strncasecmp(buf, "HeLLo WOrlc!", strlen(buf), 1));
+
+	assert(test_strncasecmp(buf, "HeLLo WOrlc!", 0, 0));
+	assert(test_strncasecmp(buf, "HeLLo WOrlc!", 1, 0));
+	assert(test_strncasecmp(buf, "HeLLo WOrlc!", 2, 0));
+	assert(test_strncasecmp(buf, "HeLLp WOrlc!", 5, -1));
+
 
 	free(buf);