4 files changed, 366 insertions, 0 deletions
diff --git a/tests/include/unittest.hh b/tests/include/unittest.hh
new file mode 100644
index 0000000..1ba64df
--- /dev/null
+++ b/tests/include/unittest.hh
@@ -0,0 +1,55 @@
+#include <cstring>
+#include <iostream>
+#include <iomanip>
+#include <cstdlib>
+
+
+std::ostream & print_hex(
+    std::ostream & os,
+    std::uint8_t const * data,
+    std::size_t length
+) {
+    for (std::size_t i = 0; i < length; i++) {
+        os << std::setw(2) << std::setfill('0') << std::right
+            << std::hex << (int) data[i];
+    }
+    return os;
+}
+
+
+char const * TEST_CASE;
+
+
+template<typename T>
+void assert_equals(
+    T const & expected,
+    T const & actual
+) {
+    if (expected != actual) {
+        std::cout << "FAILED: " << TEST_CASE << std::endl;
+        std::cout << "Expected: " << expected << std::endl;
+        std::cout << "Actual:   " << actual << std::endl;
+        std::exit(1);
+    }
+}
+
+
+void assert_equals(
+    std::uint8_t const * expected,
+    std::uint8_t const * actual,
+    std::size_t length
+) {
+    if (std::memcmp(expected, actual, length)) {
+        std::cout << "FAILED: " << TEST_CASE << std::endl;
+        print_hex(std::cout << "Expected: ", expected, length) << std::endl;
+        print_hex(std::cout << "Actual:   ", actual, length) << std::endl;
+        std::exit(1);
+    }
+}
+
+
+class TestCase  {
+public:
+    TestCase(const char *name) { TEST_CASE = name; }
+    ~TestCase() {  std::cout << "PASSED: " << TEST_CASE << std::endl; }
+};
diff --git a/tests/test_crypto.cpp b/tests/test_crypto.cpp
new file mode 100644
index 0000000..1b9947b
--- /dev/null
+++ b/tests/test_crypto.cpp
@@ -0,0 +1,204 @@
+#include "axolotl/crypto.hh"
+
+#include "unittest.hh"
+
+int main() {
+
+
+{ /* Curve25529 Test Case 1 */
+
+TestCase test_case("Curve25529 Test Case 1");
+
+std::uint8_t alice_private[32] = {
+    0x77, 0x07, 0x6D, 0x0A, 0x73, 0x18, 0xA5, 0x7D,
+    0x3C, 0x16, 0xC1, 0x72, 0x51, 0xB2, 0x66, 0x45,
+    0xDF, 0x4C, 0x2F, 0x87, 0xEB, 0xC0, 0x99, 0x2A,
+    0xB1, 0x77, 0xFB, 0xA5, 0x1D, 0xB9, 0x2C, 0x2A
+};
+
+std::uint8_t alice_public[32] = {
+    0x85, 0x20, 0xF0, 0x09, 0x89, 0x30, 0xA7, 0x54,
+    0x74, 0x8B, 0x7D, 0xDC, 0xB4, 0x3E, 0xF7, 0x5A,
+    0x0D, 0xBF, 0x3A, 0x0D, 0x26, 0x38, 0x1A, 0xF4,
+    0xEB, 0xA4, 0xA9, 0x8E, 0xAA, 0x9B, 0x4E, 0x6A
+};
+
+std::uint8_t bob_private[32] = {
+    0x5D, 0xAB, 0x08, 0x7E, 0x62, 0x4A, 0x8A, 0x4B,
+    0x79, 0xE1, 0x7F, 0x8B, 0x83, 0x80, 0x0E, 0xE6,
+    0x6F, 0x3B, 0xB1, 0x29, 0x26, 0x18, 0xB6, 0xFD,
+    0x1C, 0x2F, 0x8B, 0x27, 0xFF, 0x88, 0xE0, 0xEB
+};
+
+std::uint8_t bob_public[32] = {
+    0xDE, 0x9E, 0xDB, 0x7D, 0x7B, 0x7D, 0xC1, 0xB4,
+    0xD3, 0x5B, 0x61, 0xC2, 0xEC, 0xE4, 0x35, 0x37,
+    0x3F, 0x83, 0x43, 0xC8, 0x5B, 0x78, 0x67, 0x4D,
+    0xAD, 0xFC, 0x7E, 0x14, 0x6F, 0x88, 0x2B, 0x4F
+};
+
+std::uint8_t expected_agreement[32] = {
+    0x4A, 0x5D, 0x9D, 0x5B, 0xA4, 0xCE, 0x2D, 0xE1,
+    0x72, 0x8E, 0x3B, 0xF4, 0x80, 0x35, 0x0F, 0x25,
+    0xE0, 0x7E, 0x21, 0xC9, 0x47, 0xD1, 0x9E, 0x33,
+    0x76, 0xF0, 0x9B, 0x3C, 0x1E, 0x16, 0x17, 0x42
+};
+
+axolotl::Curve25519KeyPair alice_pair;
+axolotl::generate_key(alice_private, alice_pair);
+
+assert_equals(alice_private, alice_pair.private_key, 32);
+assert_equals(alice_public, alice_pair.public_key, 32);
+
+axolotl::Curve25519KeyPair bob_pair;
+axolotl::generate_key(bob_private, bob_pair);
+
+assert_equals(bob_private, bob_pair.private_key, 32);
+assert_equals(bob_public, bob_pair.public_key, 32);
+
+std::uint8_t actual_agreement[axolotl::CURVE25519_SHARED_SECRET_LENGTH] = {};
+
+axolotl::curve25519_shared_secret(alice_pair, bob_pair, actual_agreement);
+
+assert_equals(expected_agreement, actual_agreement, 32);
+
+axolotl::curve25519_shared_secret(bob_pair, alice_pair, actual_agreement);
+
+assert_equals(expected_agreement, actual_agreement, 32);
+
+} /* Curve25529 Test Case 1 */
+
+
+{ /* AES Test Case 1 */
+
+TestCase test_case("AES Test Case 1");
+
+axolotl::Aes256Key key = {};
+axolotl::Aes256Iv iv = {};
+std::uint8_t input[16] = {};
+
+std::uint8_t expected[32] = {
+    0xDC, 0x95, 0xC0, 0x78, 0xA2, 0x40, 0x89, 0x89,
+    0xAD, 0x48, 0xA2, 0x14, 0x92, 0x84, 0x20, 0x87,
+    0xF3, 0xC0, 0x03, 0xDD, 0xC4, 0xA7, 0xB8, 0xA9,
+    0x4B, 0xAE, 0xDF, 0xFC, 0x3D, 0x21, 0x4C, 0x38
+};
+
+std::size_t length = axolotl::aes_encrypt_cbc_length(sizeof(input));
+assert_equals(std::size_t(32), length);
+
+
+std::uint8_t actual[32] = {};
+
+axolotl::aes_encrypt_cbc(key, iv, input, sizeof(input), actual);
+assert_equals(expected, actual, 32);
+
+length = axolotl::aes_decrypt_cbc(key, iv, expected, sizeof(expected), actual);
+assert_equals(std::size_t(16), length);
+assert_equals(input, actual, length);
+
+} /* AES Test Case 1 */
+
+
+{ /* SHA 256 Test Case 1 */
+
+TestCase test_case("SHA 256 Test Case 1");
+
+std::uint8_t input[0] = {};
+
+std::uint8_t expected[32] = {
+    0xE3, 0xB0, 0xC4, 0x42, 0x98, 0xFC, 0x1C, 0x14,
+    0x9A, 0xFB, 0xF4, 0xC8, 0x99, 0x6F, 0xB9, 0x24,
+    0x27, 0xAE, 0x41, 0xE4, 0x64, 0x9B, 0x93, 0x4C,
+    0xA4, 0x95, 0x99, 0x1B, 0x78, 0x52, 0xB8, 0x55
+};
+
+std::uint8_t actual[32];
+
+axolotl::sha256(input, sizeof(input), actual);
+
+assert_equals(expected, actual, 32);
+
+} /* SHA 256 Test Case 1 */
+
+{ /* HMAC Test Case 1 */
+
+TestCase test_case("HMAC Test Case 1");
+
+std::uint8_t input[0] = {};
+
+std::uint8_t expected[32] = {
+    0xb6, 0x13, 0x67, 0x9a, 0x08, 0x14, 0xd9, 0xec,
+    0x77, 0x2f, 0x95, 0xd7, 0x78, 0xc3, 0x5f, 0xc5,
+    0xff, 0x16, 0x97, 0xc4, 0x93, 0x71, 0x56, 0x53,
+    0xc6, 0xc7, 0x12, 0x14, 0x42, 0x92, 0xc5, 0xad
+};
+
+std::uint8_t actual[32];
+
+axolotl::hmac_sha256(input, sizeof(input), input, sizeof(input), actual);
+
+assert_equals(expected, actual, 32);
+
+} /* HMAC Test Case 1 */
+
+{ /* HDKF Test Case 1 */
+
+TestCase test_case("HDKF Test Case 1");
+
+std::uint8_t input[22] = {
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b
+};
+
+std::uint8_t salt[13] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+    0x08, 0x09, 0x0a, 0x0b, 0x0c
+};
+
+std::uint8_t info[10] = {
+    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+    0xf8, 0xf9
+};
+
+std::uint8_t hmac_expected_output[32] = {
+    0x07, 0x77, 0x09, 0x36, 0x2c, 0x2e, 0x32, 0xdf,
+    0x0d, 0xdc, 0x3f, 0x0d, 0xc4, 0x7b, 0xba, 0x63,
+    0x90, 0xb6, 0xc7, 0x3b, 0xb5, 0x0f, 0x9c, 0x31,
+    0x22, 0xec, 0x84, 0x4a, 0xd7, 0xc2, 0xb3, 0xe5,
+};
+
+std::uint8_t hmac_actual_output[32] = {};
+
+axolotl::hmac_sha256(
+    salt, sizeof(salt),
+    input, sizeof(input),
+    hmac_actual_output
+);
+
+assert_equals(hmac_expected_output, hmac_actual_output, 32);
+
+std::uint8_t hkdf_expected_output[42] = {
+    0x3c, 0xb2, 0x5f, 0x25, 0xfa, 0xac, 0xd5, 0x7a,
+    0x90, 0x43, 0x4f, 0x64, 0xd0, 0x36, 0x2f, 0x2a,
+    0x2d, 0x2d, 0x0a, 0x90, 0xcf, 0x1a, 0x5a, 0x4c,
+    0x5d, 0xb0, 0x2d, 0x56, 0xec, 0xc4, 0xc5, 0xbf,
+    0x34, 0x00, 0x72, 0x08, 0xd5, 0xb8, 0x87, 0x18,
+    0x58, 0x65
+};
+
+std::uint8_t hkdf_actual_output[42] = {};
+
+axolotl::hkdf_sha256(
+    input, sizeof(input),
+    salt, sizeof(salt),
+    info, sizeof(info),
+    hkdf_actual_output, sizeof(hkdf_actual_output)
+);
+
+assert_equals(hkdf_expected_output, hkdf_actual_output, 42);
+
+} /* HDKF Test Case 1 */
+
+}
diff --git a/tests/test_list.cpp b/tests/test_list.cpp
new file mode 100644
index 0000000..27b3d58
--- /dev/null
+++ b/tests/test_list.cpp
@@ -0,0 +1,56 @@
+#include "axolotl/list.hh"
+#include "unittest.hh"
+
+int main() {
+
+{ /** List insert test **/
+
+TestCase test_case("List insert");
+
+axolotl::List<int, 4> test_list;
+
+assert_equals(std::size_t(0), test_list.size());
+
+for (int i = 0; i < 4; ++i) {
+    test_list.insert(test_list.end(), i);
+}
+
+assert_equals(std::size_t(4), test_list.size());
+
+int i = 0;
+for (auto item : test_list) {
+    assert_equals(i++, item);
+}
+
+assert_equals(4, i);
+
+test_list.insert(test_list.end(), 4);
+
+assert_equals(4, test_list[3]);
+
+} /** List insert test **/
+
+{ /** List erase test **/
+TestCase test_case("List erase");
+
+axolotl::List<int, 4> test_list;
+assert_equals(std::size_t(0), test_list.size());
+
+for (int i = 0; i < 4; ++i) {
+    test_list.insert(test_list.end(), i);
+}
+assert_equals(std::size_t(4), test_list.size());
+
+test_list.erase(test_list.begin());
+assert_equals(std::size_t(3), test_list.size());
+
+int i = 0;
+for (auto item : test_list) {
+    assert_equals(i + 1, item);
+    ++i;
+}
+assert_equals(3, i);
+
+}
+
+}
diff --git a/tests/test_message.cpp b/tests/test_message.cpp
new file mode 100644
index 0000000..242243b
--- /dev/null
+++ b/tests/test_message.cpp
@@ -0,0 +1,51 @@
+#include "axolotl/message.hh"
+#include "unittest.hh"
+
+int main() {
+
+std::uint8_t message1[36] = "\x03\n\nratchetkey\x10\x01\"\nciphertexthmacsha2";
+std::uint8_t message2[36] = "\x03\x10\x01\n\nratchetkey\"\nciphertexthmacsha2";
+std::uint8_t ratchetkey[11] = "ratchetkey";
+std::uint8_t ciphertext[11] = "ciphertext";
+std::uint8_t hmacsha2[9] = "hmacsha2";
+
+{ /* Message decode test */
+
+TestCase test_case("Message decode test");
+
+axolotl::MessageReader reader(axolotl::decode_message(message1, 35, 8));
+
+assert_equals(std::size_t(27), reader.body_length);
+assert_equals(std::uint8_t(3), reader.version);
+assert_equals(std::uint32_t(1), reader.counter);
+assert_equals(std::size_t(10), reader.ratchet_key_length);
+assert_equals(std::size_t(10), reader.ciphertext_length);
+
+assert_equals(ratchetkey, reader.ratchet_key, 10);
+assert_equals(ciphertext, reader.ciphertext, 10);
+assert_equals(hmacsha2, reader.mac, 8);
+
+
+} /* Message decode test */
+
+{ /* Message encode test */
+
+TestCase test_case("Message encode test");
+
+std::size_t length = axolotl::encode_message_length(1, 10, 10, 8);
+assert_equals(std::size_t(35), length);
+
+std::uint8_t output[length];
+
+axolotl::MessageWriter writer(axolotl::encode_message(3, 1, 10, 10, output));
+assert_equals(std::size_t(27), writer.body_length);
+
+std::memcpy(writer.ratchet_key, ratchetkey, 10);
+std::memcpy(writer.ciphertext, ciphertext, 10);
+std::memcpy(writer.mac, hmacsha2, 8);
+
+assert_equals(message2, output, 35);
+
+} /* Message encode test */
+
+}