unit-tests: Add test for crypto_factory_t's rng_create method

src/libstrongswan/tests/Makefile.am

@@ -42,6 +42,7 @@ tests_SOURCES = tests.h tests.c \
   suites/test_host.c \
   suites/test_hasher.c \
   suites/test_crypter.c \
+  suites/test_crypto_factory.c \
   suites/test_pen.c \
   suites/test_asn1.c \
   suites/test_asn1_parser.c \

src/libstrongswan/tests/suites/test_crypto_factory.c

@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2014 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 "test_suite.h"
+
+#include <crypto/crypto_factory.h>
+
+static rng_t *rng_create(rng_quality_t quality)
+{
+	rng_quality_t *q = malloc_thing(rng_quality_t);
+	*q = quality;
+	return (rng_t*)q;
+}
+
+static rng_t *rng_create_weak(rng_quality_t quality)
+{
+	ck_assert(quality == RNG_WEAK);
+	return rng_create(RNG_WEAK);
+}
+
+static rng_t *rng_create_strong(rng_quality_t quality)
+{
+	ck_assert(quality <= RNG_STRONG);
+	return rng_create(RNG_STRONG);
+}
+
+static rng_t *rng_create_true(rng_quality_t quality)
+{
+	ck_assert(quality <= RNG_TRUE);
+	return rng_create(RNG_TRUE);
+}
+
+static rng_t *rng_create_true_second(rng_quality_t quality)
+{
+	fail("should never be called");
+	return rng_create(RNG_TRUE);
+}
+
+static rng_quality_t rng_weak = RNG_WEAK;
+static rng_quality_t rng_strong = RNG_STRONG;
+static rng_quality_t rng_true = RNG_TRUE;
+
+static struct {
+	rng_quality_t *exp_weak;
+	rng_quality_t *exp_strong;
+	rng_quality_t *exp_true;
+	struct {
+		rng_quality_t *q;
+		rng_constructor_t create;
+	} data[4];
+} rng_data[] = {
+	{ NULL, NULL, NULL, {
+		{ NULL, NULL }
+	}},
+	{ &rng_weak, NULL, NULL, {
+		{ &rng_weak, rng_create_weak },
+		{ NULL, NULL }
+	}},
+	{ &rng_strong, &rng_strong, NULL, {
+		{ &rng_strong, rng_create_strong },
+		{ NULL, NULL }
+	}},
+	{ &rng_true, &rng_true, &rng_true, {
+		{ &rng_true, rng_create_true },
+		{ NULL, NULL }
+	}},
+	{ &rng_true, &rng_true, &rng_true, {
+		{ &rng_true, rng_create_true },
+		{ &rng_true, rng_create_true_second },
+		{ NULL, NULL }
+	}},
+	{ &rng_weak, &rng_true, &rng_true, {
+		{ &rng_weak, rng_create_weak },
+		{ &rng_true, rng_create_true },
+		{ NULL, NULL }
+	}},
+	{ &rng_weak, &rng_strong, &rng_true, {
+		{ &rng_true, rng_create_true },
+		{ &rng_strong, rng_create_strong },
+		{ &rng_weak, rng_create_weak },
+		{ NULL, NULL }
+	}},
+	{ &rng_weak, &rng_strong, &rng_true, {
+		{ &rng_weak, rng_create_weak },
+		{ &rng_strong, rng_create_strong },
+		{ &rng_true, rng_create_true },
+		{ NULL, NULL }
+	}},
+};
+
+static void verify_rng(crypto_factory_t *factory, rng_quality_t request,
+					   rng_quality_t *expected)
+{
+	rng_quality_t *res;
+
+	res = (rng_quality_t*)factory->create_rng(factory, request);
+	if (!expected)
+	{
+		ck_assert(!res);
+	}
+	else
+	{
+		ck_assert(res);
+		ck_assert_int_eq(*expected, *res);
+		free(res);
+	}
+}
+
+START_TEST(test_create_rng)
+{
+	crypto_factory_t *factory;
+	int i;
+
+	factory = crypto_factory_create();
+	for (i = 0; rng_data[_i].data[i].q; i++)
+	{
+		ck_assert(factory->add_rng(factory, *rng_data[_i].data[i].q, "test",
+								   rng_data[_i].data[i].create));
+	}
+	verify_rng(factory, RNG_WEAK, rng_data[_i].exp_weak);
+	verify_rng(factory, RNG_STRONG, rng_data[_i].exp_strong);
+	verify_rng(factory, RNG_TRUE, rng_data[_i].exp_true);
+	for (i = 0; rng_data[_i].data[i].q; i++)
+	{
+		factory->remove_rng(factory, rng_data[_i].data[i].create);
+	}
+	factory->destroy(factory);
+}
+END_TEST
+
+Suite *crypto_factory_suite_create()
+{
+	Suite *s;
+	TCase *tc;
+
+	s = suite_create("crypto-factory");
+
+	tc = tcase_create("create_rng");
+	tcase_add_loop_test(tc, test_create_rng, 0, countof(rng_data));
+	suite_add_tcase(s, tc);
+
+	return s;
+}

src/libstrongswan/tests/tests.h

@@ -35,6 +35,7 @@ TEST_SUITE(host_suite_create)
 TEST_SUITE(printf_suite_create)
 TEST_SUITE(hasher_suite_create)
 TEST_SUITE(crypter_suite_create)
+TEST_SUITE(crypto_factory_suite_create)
 TEST_SUITE(pen_suite_create)
 TEST_SUITE(asn1_suite_create)
 TEST_SUITE(asn1_parser_suite_create)