Added tests for bio_writer_t

src/libstrongswan/tests/Makefile.am

@@ -5,7 +5,7 @@ check_PROGRAMS = $(TESTS)
 test_runner_SOURCES = \
   test_runner.c test_runner.h \
   test_linked_list.c test_enumerator.c test_linked_list_enumerator.c \
-  test_bio_reader.c test_chunk.c test_enum.c test_hashtable.c \
+  test_bio_reader.c test_bio_writer.c test_chunk.c test_enum.c test_hashtable.c \
   test_identification.c test_threading.c test_utils.c
 
 test_runner_CFLAGS = \

src/libstrongswan/tests/test_bio_writer.c

@@ -0,0 +1,394 @@
+/*
+ * Copyright (C) 2013 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <check.h>
+
+#include <bio/bio_writer.h>
+
+/*******************************************************************************
+ * different integer writes
+ */
+
+static inline void verify_int_buffer(chunk_t data, int bits, int val)
+{
+	size_t i;
+	int len = bits / 8;
+
+	ck_assert_int_eq(data.len, (val + 1) * len);
+	for (i = 0; i < data.len; i++)
+	{
+		(i + 1) % len ? ck_assert_int_eq(data.ptr[i], 0)
+					  : ck_assert_int_eq(data.ptr[i], i / len);
+	}
+}
+
+#define assert_integer_write(init, bits) ({ \
+	int i; \
+	bio_writer_t *writer = bio_writer_create(init); \
+	for (i = 0; i < 16; i++) \
+	{ \
+		writer->write_uint##bits(writer, i); \
+		verify_int_buffer(writer->get_buf(writer), bits, i); \
+	} \
+	writer->destroy(writer); \
+})
+
+START_TEST(test_write_uint8)
+{
+	/* use default buffer (and increase) size */
+	assert_integer_write(0, 8);
+	/* force a resize by the given size */
+	assert_integer_write(1, 8);
+}
+END_TEST
+
+START_TEST(test_write_uint16)
+{
+	assert_integer_write(0, 16);
+	assert_integer_write(1, 16);
+}
+END_TEST
+
+START_TEST(test_write_uint24)
+{
+	assert_integer_write(0, 24);
+	assert_integer_write(1, 24);
+}
+END_TEST
+
+START_TEST(test_write_uint32)
+{
+	assert_integer_write(0, 32);
+	assert_integer_write(1, 32);
+}
+END_TEST
+
+START_TEST(test_write_uint64)
+{
+	assert_integer_write(0, 64);
+	assert_integer_write(1, 64);
+}
+END_TEST
+
+/*******************************************************************************
+ * write data / skip
+ */
+
+static inline void assert_writer_after_write(bio_writer_t *writer, int count)
+{
+	chunk_t buf;
+	size_t i;
+
+	buf = writer->get_buf(writer);
+	ck_assert_int_eq(buf.len, count * 3);
+	for (i = 0; i < buf.len; i++)
+	{
+		ck_assert(buf.ptr[i] == i % 3);
+	}
+}
+
+START_TEST(test_write_data)
+{
+	chunk_t buf, data = chunk_from_chars(0x00, 0x01, 0x02);
+	bio_writer_t *writer;
+
+	/* no allocation, but default buffer size */
+	writer = bio_writer_create(0);
+	buf = writer->get_buf(writer);
+	ck_assert_int_eq(buf.len, 0);
+	ck_assert(buf.ptr == NULL);
+
+	writer->write_data(writer, chunk_empty);
+	buf = writer->get_buf(writer);
+	ck_assert_int_eq(buf.len, 0);
+	ck_assert(buf.ptr == NULL);
+	writer->destroy(writer);
+
+	/* custom buffer size, initial buffer allocated */
+	writer = bio_writer_create(1);
+	buf = writer->get_buf(writer);
+	ck_assert_int_eq(buf.len, 0);
+	ck_assert(buf.ptr != NULL);
+
+	writer->write_data(writer, chunk_empty);
+	buf = writer->get_buf(writer);
+	ck_assert_int_eq(buf.len, 0);
+	ck_assert(buf.ptr != NULL);
+	writer->destroy(writer);
+
+	writer = bio_writer_create(0);
+
+	writer->write_data(writer, data);
+	assert_writer_after_write(writer, 1);
+
+	writer->write_data(writer, data);
+	assert_writer_after_write(writer, 2);
+
+	writer->write_data(writer, data);
+	assert_writer_after_write(writer, 3);
+
+	writer->destroy(writer);
+}
+END_TEST
+
+START_TEST(test_skip)
+{
+	chunk_t skipped, buf, data = chunk_from_chars(0x00, 0x01, 0x02);
+	bio_writer_t *writer;
+
+	writer = bio_writer_create(4);
+	skipped = writer->skip(writer, 3);
+	ck_assert_int_eq(skipped.len, 3);
+	buf = writer->get_buf(writer);
+	ck_assert(skipped.ptr == buf.ptr);
+	memset(skipped.ptr, 0, skipped.len);
+
+	writer->write_data(writer, data);
+	buf = writer->get_buf(writer);
+	ck_assert(chunk_equals(buf, chunk_from_chars(0x00, 0x00, 0x00, 0x00, 0x01, 0x02)));
+	writer->destroy(writer);
+
+	writer = bio_writer_create(1);
+	skipped = writer->skip(writer, 3);
+	memcpy(skipped.ptr, data.ptr, data.len);
+
+	writer->write_data(writer, data);
+	assert_writer_after_write(writer, 2);
+	writer->destroy(writer);
+}
+END_TEST
+
+/*******************************************************************************
+ * write length followed by data
+ */
+
+#define assert_write_data_len(init, bits) ({ \
+ 	bio_writer_t *writer; \
+	chunk_t buf, data; \
+	int i, len = bits / 8; \
+	writer = bio_writer_create(init); \
+	writer->write_data##bits(writer, chunk_empty); \
+	buf = writer->get_buf(writer); \
+	ck_assert_int_eq(buf.len, len); \
+	ck_assert_int_eq(buf.ptr[len - 1], 0); \
+	writer->destroy(writer); \
+	data = chunk_alloca(32); \
+	memset(data.ptr, 0, data.len); \
+	for (i = 0; i < 32; i++) \
+	{ \
+		data.ptr[i] = i; \
+		data.len = i; \
+		writer = bio_writer_create(init); \
+		writer->write_data##bits(writer, data); \
+		buf = writer->get_buf(writer); \
+		ck_assert_int_eq(buf.len, len + i); \
+		ck_assert_int_eq(buf.ptr[len - 1], i); \
+		ck_assert(chunk_equals(chunk_create(buf.ptr + len, buf.len - len), data)); \
+		writer->destroy(writer); \
+	} \
+})
+
+START_TEST(test_write_data8)
+{
+	assert_write_data_len(0, 8);
+	assert_write_data_len(1, 8);
+}
+END_TEST
+
+START_TEST(test_write_data16)
+{
+	assert_write_data_len(0, 16);
+	assert_write_data_len(1, 16);
+}
+END_TEST
+
+START_TEST(test_write_data24)
+{
+	assert_write_data_len(0, 24);
+	assert_write_data_len(1, 24);
+}
+END_TEST
+
+START_TEST(test_write_data32)
+{
+	assert_write_data_len(0, 32);
+	assert_write_data_len(1, 32);
+}
+END_TEST
+
+
+/*******************************************************************************
+ * add length header before current data
+ */
+
+#define assert_wrap_data(init, bits) ({ \
+ 	bio_writer_t *writer; \
+	chunk_t buf, data; \
+	int i, len = bits / 8; \
+	writer = bio_writer_create(init); \
+	writer->wrap##bits(writer); \
+	buf = writer->get_buf(writer); \
+	ck_assert_int_eq(buf.len, len); \
+	ck_assert_int_eq(buf.ptr[len - 1], 0); \
+	writer->destroy(writer); \
+	data = chunk_alloca(32); \
+	memset(data.ptr, 0, data.len); \
+	for (i = 0; i < 32; i++) \
+	{ \
+		data.ptr[i] = i; \
+		data.len = i; \
+		writer = bio_writer_create(init); \
+		writer->write_data(writer, data); \
+		writer->wrap##bits(writer); \
+		buf = writer->get_buf(writer); \
+		ck_assert_int_eq(buf.len, len + i); \
+		ck_assert_int_eq(buf.ptr[len - 1], i); \
+		ck_assert(chunk_equals(chunk_create(buf.ptr + len, buf.len - len), data)); \
+		writer->wrap##bits(writer); \
+		buf = writer->get_buf(writer); \
+		ck_assert_int_eq(buf.len, 2 * len + i); \
+		ck_assert_int_eq(buf.ptr[len - 1], len + i); \
+		ck_assert(chunk_equals(chunk_create(buf.ptr + 2 * len, buf.len - 2 * len), data)); \
+		writer->destroy(writer); \
+	} \
+})
+
+START_TEST(test_wrap8)
+{
+	assert_wrap_data(0, 8);
+	assert_wrap_data(1, 8);
+}
+END_TEST
+
+START_TEST(test_wrap16)
+{
+	assert_wrap_data(0, 16);
+	assert_wrap_data(1, 16);
+}
+END_TEST
+
+START_TEST(test_wrap24)
+{
+	assert_wrap_data(0, 24);
+	assert_wrap_data(1, 24);
+}
+END_TEST
+
+START_TEST(test_wrap32)
+{
+	assert_wrap_data(0, 32);
+	assert_wrap_data(1, 32);
+}
+END_TEST
+
+/*******************************************************************************
+ * test data extraction
+ */
+
+START_TEST(test_get_buf)
+{
+	bio_writer_t *writer;
+	chunk_t data1, data2;
+
+	lib->leak_detective->set_state(lib->leak_detective, TRUE);
+
+	writer = bio_writer_create(0);
+	writer->write_uint8(writer, 1);
+	data1 = writer->get_buf(writer);
+	ck_assert_int_eq(data1.len, 1);
+	ck_assert(data1.ptr[0] == 1);
+
+	data2 = writer->get_buf(writer);
+	ck_assert(chunk_equals(data1, data2));
+	ck_assert(data1.ptr == data2.ptr);
+	writer->destroy(writer);
+
+	ck_assert_int_eq(lib->leak_detective->leaks(lib->leak_detective), 0);
+}
+END_TEST
+
+START_TEST(test_extract_buf)
+{
+	bio_writer_t *writer;
+	chunk_t data1, data2;
+
+	lib->leak_detective->set_state(lib->leak_detective, TRUE);
+
+	writer = bio_writer_create(0);
+	writer->write_uint8(writer, 1);
+	data1 = writer->extract_buf(writer);
+	ck_assert_int_eq(data1.len, 1);
+	ck_assert(data1.ptr[0] == 1);
+
+	data2 = writer->get_buf(writer);
+	ck_assert_int_eq(data2.len, 0);
+	ck_assert(data2.ptr == NULL);
+	data2 = writer->extract_buf(writer);
+	ck_assert_int_eq(data2.len, 0);
+	ck_assert(data2.ptr == NULL);
+
+	writer->write_uint8(writer, 1);
+	data2 = writer->get_buf(writer);
+	ck_assert(chunk_equals(data1, data2));
+	ck_assert(data1.ptr != data2.ptr);
+
+	writer->destroy(writer);
+	chunk_free(&data1);
+
+	ck_assert_int_eq(lib->leak_detective->leaks(lib->leak_detective), 0);
+}
+END_TEST
+
+Suite *bio_writer_suite_create()
+{
+	Suite *s;
+	TCase *tc;
+
+	s = suite_create("bio_writer");
+
+	tc = tcase_create("integer writes");
+	tcase_add_test(tc, test_write_uint8);
+	tcase_add_test(tc, test_write_uint16);
+	tcase_add_test(tc, test_write_uint24);
+	tcase_add_test(tc, test_write_uint32);
+	tcase_add_test(tc, test_write_uint64);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("data writes/skip");
+	tcase_add_test(tc, test_write_data);
+	tcase_add_test(tc, test_skip);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("data length writes");
+	tcase_add_test(tc, test_write_data8);
+	tcase_add_test(tc, test_write_data16);
+	tcase_add_test(tc, test_write_data24);
+	tcase_add_test(tc, test_write_data32);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("wrap writes");
+	tcase_add_test(tc, test_wrap8);
+	tcase_add_test(tc, test_wrap16);
+	tcase_add_test(tc, test_wrap24);
+	tcase_add_test(tc, test_wrap32);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("get/extract");
+	tcase_add_test(tc, test_get_buf);
+	tcase_add_test(tc, test_extract_buf);
+	suite_add_tcase(s, tc);
+
+	return s;
+}

src/libstrongswan/tests/test_runner.c

@@ -34,6 +34,7 @@ int main()
 
 	sr = srunner_create(NULL);
 	srunner_add_suite(sr, bio_reader_suite_create());
+	srunner_add_suite(sr, bio_writer_suite_create());
 	srunner_add_suite(sr, chunk_suite_create());
 	srunner_add_suite(sr, enum_suite_create());
 	srunner_add_suite(sr, enumerator_suite_create());

src/libstrongswan/tests/test_runner.h

@@ -19,6 +19,7 @@
 #include <check.h>
 
 Suite *bio_reader_suite_create();
+Suite *bio_writer_suite_create();
 Suite *chunk_suite_create();
 Suite *enum_suite_create();
 Suite *enumerator_suite_create();