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-rw-r--r--tests/test_summarize.cpp16
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/test_summarize.cpp b/tests/test_summarize.cpp
index 27e0dd3..d7b223a 100644
--- a/tests/test_summarize.cpp
+++ b/tests/test_summarize.cpp
@@ -186,6 +186,22 @@ TEST_CASE("summarize_packet decodes an ARP request end to end") {
"ARP who-has 10.0.0.2 tell 10.0.0.1 (aa:bb:cc:dd:ee:ff)");
}
+TEST_CASE("summarize_packet unwraps a VLAN tag to reach the real ARP payload underneath") {
+ std::vector<unsigned char> bytes = {
+ 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF,
+ 0x81, 0x00, // ethertype: 802.1Q
+ 0x00, 42, // TCI: VLAN 42
+ 0x08, 0x06, // real ethertype: ARP
+ 0x00, 0x01, 0x08, 0x00, 0x06, 0x04, 0x00, 0x01,
+ 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 10, 0, 0, 1,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 10, 0, 0, 2,
+ };
+ auto line = packeteer::summarize_packet(bytes, DLT_EN10MB);
+ CHECK(line ==
+ "ETH aa:bb:cc:dd:ee:ff -> 11:22:33:44:55:66 ethertype=0x8100 vlan=42 | "
+ "ARP who-has 10.0.0.2 tell 10.0.0.1 (aa:bb:cc:dd:ee:ff)");
+}
+
TEST_CASE("hex_dump_lines produces one line per 16 bytes, with the right byte count") {
std::vector<unsigned char> bytes(20, 0);
for (std::size_t i = 0; i < bytes.size(); ++i) bytes[i] = static_cast<unsigned char>(i);