From: Marko Kreen <markokr@gmail.com>
Date: Wed, 26 Jan 2011 12:51:12 +0000 (+0200)
Subject: test: <endian.h> tests
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=89a80ecc2b00b5a92bdbed44f90a8f61a6ab7e97;p=libusual.git

test: <endian.h> tests
---

diff --git a/test/Makefile b/test/Makefile
index 4a9d946..b228142 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -4,7 +4,7 @@ SRCS = test_string.c test_crypto.c test_aatree.c test_heap.c \
        test_common.c test_list.c tinytest.c test_cbtree.c \
        test_utf8.c test_strpool.c test_pgutil.c test_regex.c \
        test_cxalloc.c test_bits.c test_base.c test_netdb.c \
-       test_cfparser.c
+       test_cfparser.c test_endian.c
 OBJS = $(addprefix obj/, $(SRCS:.c=.o))
 HDRS = test_common.h test_config.h tinytest.h tinytest_macros.h
 LIBS =
diff --git a/test/test_common.c b/test/test_common.c
index 7767461..cd6b3c5 100644
--- a/test/test_common.c
+++ b/test/test_common.c
@@ -9,6 +9,7 @@ struct testgroup_t groups[] = {
 	{ "cxalloc/", cxalloc_tests },
 	{ "cbtree/", cbtree_tests },
 	{ "crypto/", crypto_tests },
+	{ "endian/", endian_tests },
 	{ "string/", string_tests },
 	{ "heap/", heap_tests },
 	{ "list/", list_tests },
diff --git a/test/test_common.h b/test/test_common.h
index 16ece15..109c41e 100644
--- a/test/test_common.h
+++ b/test/test_common.h
@@ -23,4 +23,5 @@ extern struct testcase_t bits_tests[];
 extern struct testcase_t base_tests[];
 extern struct testcase_t netdb_tests[];
 extern struct testcase_t cfparser_tests[];
+extern struct testcase_t endian_tests[];
 
diff --git a/test/test_endian.c b/test/test_endian.c
new file mode 100644
index 0000000..3c341d0
--- /dev/null
+++ b/test/test_endian.c
@@ -0,0 +1,120 @@
+#include <usual/endian.h>
+
+#include "test_common.h"
+
+#include <stdarg.h>
+#include <string.h>
+
+/*
+ * bswap*()
+ */
+
+static void test_bswap(void *p)
+{
+	int_check(bswap16(0xff01), 0x01ff);
+	int_check(bswap32(0x01020304), 0x04030201);
+	int_check(bswap64(0x0102030405060708ULL), 0x0807060504030201ULL);
+end:;
+}
+
+/*
+ * *enc(), *dec()
+ */
+
+static uint64_t tdecode(int t, ...)
+{
+	uint8_t buf[16];
+	bool be = t > 0;
+	va_list ap;
+	uint64_t val = 777;
+	int i;
+
+	if (t < 0) t = -t;
+
+	va_start(ap, t);
+	memset(buf, 0xC1, sizeof(buf));
+	for (i = 0; i < t; i++)
+		buf[i] = va_arg(ap, int);
+	va_end(ap);
+
+	if (be) {
+		switch (t) {
+		case 2: val = be16dec(buf); break;
+		case 4: val = be32dec(buf); break;
+		case 8: val = be64dec(buf); break;
+		}
+	} else {
+		switch (t) {
+		case 2: val = le16dec(buf); break;
+		case 4: val = le32dec(buf); break;
+		case 8: val = le64dec(buf); break;
+		}
+	}
+	return val;
+}
+
+static const char *tencode(int t, uint64_t val)
+{
+	static char res[64];
+	uint8_t buf[16];
+	bool be = t > 0;
+	int i;
+
+	if (t < 0) t = -t;
+
+	memset(buf, 0xFC, sizeof(buf));
+
+	if (be) {
+		switch (t) {
+		case 2: be16enc(buf, val); break;
+		case 4: be32enc(buf, val); break;
+		case 8: be64enc(buf, val); break;
+		}
+	} else {
+		switch (t) {
+		case 2: le16enc(buf, val); break;
+		case 4: le32enc(buf, val); break;
+		case 8: le64enc(buf, val); break;
+		}
+	}
+
+	for (i = t; i < sizeof(buf); i++) {
+		if (buf[i] != 0xFC)
+			return "OVER";
+	}
+
+	snprintf(res, sizeof(res), "%02X %02X %02X %02X %02X %02X %02X %02X ",
+		 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);
+	res[t*3 - 1] = 0;
+	return res;
+}
+
+static void test_encdec(void *p)
+{
+	ull_check(tdecode( 2, 1,2), 0x0102);
+	ull_check(tdecode(-2, 1,2), 0x0201);
+	ull_check(tdecode( 4, 1,2,3,4), 0x01020304);
+	ull_check(tdecode(-4, 1,2,3,4), 0x04030201);
+	ull_check(tdecode( 8, 1,2,3,4,5,6,7,8), 0x0102030405060708);
+	ull_check(tdecode(-8, 1,2,3,4,5,6,7,8), 0x0807060504030201);
+
+	str_check(tencode( 2, 0x0102), "01 02");
+	str_check(tencode(-2, 0x0102), "02 01");
+	str_check(tencode( 4, 0x01020304), "01 02 03 04");
+	str_check(tencode(-4, 0x01020304), "04 03 02 01");
+	str_check(tencode( 8, 0x0102030405060708ULL), "01 02 03 04 05 06 07 08");
+	str_check(tencode(-8, 0x0102030405060708ULL), "08 07 06 05 04 03 02 01");
+end:;
+}
+
+
+/*
+ * Describe
+ */
+
+struct testcase_t endian_tests[] = {
+	{ "bswap", test_bswap },
+	{ "encdec", test_encdec },
+	END_OF_TESTCASES
+};
+