test: Add test for format_ssl_fingerprint()

src/test/unittests/net/SecureUtilsTests.cpp

@@ -0,0 +1,47 @@
+/*
+    barrier -- mouse and keyboard sharing utility
+    Copyright (C) 2021 Barrier contributors
+
+    This package is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License
+    found in the file LICENSE that should have accompanied this file.
+
+    This package 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.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "net/SecureUtils.h"
+
+#include "test/global/gtest.h"
+#include <random>
+
+namespace {
+
+std::string generate_pseudo_random_bytes(std::size_t seed, std::size_t size)
+{
+    std::mt19937_64 engine{seed};
+    std::uniform_int_distribution<int> dist{0, 255};
+    std::vector<char> bytes;
+
+    bytes.reserve(size);
+    for (std::size_t i = 0; i < size; ++i) {
+        bytes.push_back(dist(engine));
+    }
+
+    return std::string{bytes.data(), bytes.size()};
+}
+
+} // namespace
+
+TEST(SecureUtilsTest, FormatSslFingerprintHexWithSeparators)
+{
+    std::string fingerprint = generate_pseudo_random_bytes(0, 32);
+    ASSERT_EQ(format_ssl_fingerprint(fingerprint, true, true),
+              "28:FD:0A:98:8A:0E:A1:6C:D7:E8:6C:A7:EE:58:41:71:"
+              "CA:B2:8E:49:25:94:90:25:26:05:8D:AF:63:ED:2E:30");
+}