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-rw-r--r--test/test_data.lua13
1 files changed, 13 insertions, 0 deletions
diff --git a/test/test_data.lua b/test/test_data.lua
index 74167bf..34021c5 100644
--- a/test/test_data.lua
+++ b/test/test_data.lua
@@ -309,4 +309,17 @@ assert(data.cpu_model('model name\t: AMD Ryzen 9 7950X3D 16-Core Processor\n')
== 'Ryzen 9 7950X3D',
'x3d, got ' .. tostring(data.cpu_model('model name\t: AMD Ryzen 9 7950X3D 16-Core Processor\n')))
+-- === Interface address ====================================================
+-- The fixture uses TEST-NET-1 (192.0.2.0/24, RFC 5737). This repository is
+-- public: no real LAN address belongs in it, and no test may assert one.
+local addr = data.iface_addr_parse(read('test/fixtures/ip_addr'))
+assert(addr == '192.0.2.15', 'lan address, got ' .. tostring(addr))
+
+-- A down interface has no inet line. nil, so the card shows '--' rather than
+-- a stale or invented address.
+assert(data.iface_addr_parse('5: br0: <BROADCAST,MULTICAST> mtu 1500 state DOWN\n') == nil,
+ 'a down interface gives nil')
+assert(data.iface_addr_parse('') == nil, 'empty gives nil')
+assert(data.iface_addr_parse(nil) == nil, 'nil gives nil')
+
print('test_data: all assertions passed')