Add to_hex::buffer

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/unit_tests/epee_utils.cpp b/tests/unit_tests/epee_utils.cpp
index 185cb73b1..c776fbcc9 100644
--- a/tests/unit_tests/epee_utils.cpp
+++ b/tests/unit_tests/epee_utils.cpp
@@ -1241,6 +1241,22 @@ TEST(ToHex, ArrayFromPod)
   );
 }
 
+TEST(ToHex, Buffer)
+{
+  static constexpr const std::uint8_t source[] = {0xFF, 0x00, 0xAB, 0x01};
+  const std::vector<char> expected{'f', 'f', '0', '0', 'a', 'b', '0', '1'};
+
+  std::vector<char> buffer;
+  buffer.resize(expected.size());
+  EXPECT_TRUE(epee::to_hex::buffer(epee::to_mut_span(buffer), source));
+  EXPECT_EQ(expected, buffer);
+
+  buffer.pop_back();
+  EXPECT_FALSE(epee::to_hex::buffer(epee::to_mut_span(buffer), source));
+  buffer.pop_back();
+  EXPECT_FALSE(epee::to_hex::buffer(epee::to_mut_span(buffer), source));
+}
+
 TEST(ToHex, Ostream)
 {
   std::stringstream out;