1 files changed, 103 insertions, 0 deletions
diff --git a/modules/renumber/renumber.test.lua b/modules/renumber/renumber.test.lua
new file mode 100644
index 0000000..97d6a6f
--- /dev/null
+++ b/modules/renumber/renumber.test.lua
@@ -0,0 +1,103 @@
+local function gen_rrset(owner, rrtype, rdataset)
+	assert(type(rdataset) == 'table' or type(rdataset) == 'string')
+	if type(rdataset) ~= 'table' then
+		rdataset = { rdataset }
+	end
+	local rrset = kres.rrset(todname(owner), rrtype, kres.class.IN, 3600)
+	for _, rdata in pairs(rdataset) do
+		assert(rrset:add_rdata(rdata, #rdata))
+	end
+	return rrset
+end
+
+local function prepare_cache()
+	cache.open(100*MB)
+	cache.clear()
+
+	local ffi = require('ffi')
+	local c = kres.context().cache
+
+	assert(c:insert(
+		gen_rrset('a10-0.test.',
+			kres.type.A, kres.str2ip('10.0.0.1')),
+		nil, ffi.C.KR_RANK_SECURE + ffi.C.KR_RANK_AUTH))
+	assert(c:insert(
+		gen_rrset('a10-2.test.',
+			kres.type.A, kres.str2ip('10.2.0.1')),
+		nil, ffi.C.KR_RANK_SECURE + ffi.C.KR_RANK_AUTH))
+	assert(c:insert(
+		gen_rrset('a10-0plus2.test.',
+			kres.type.A, {
+				kres.str2ip('10.0.0.1'),
+				kres.str2ip('10.2.0.1')
+			}),
+		nil, ffi.C.KR_RANK_SECURE + ffi.C.KR_RANK_AUTH))
+	assert(c:insert(
+		gen_rrset('a10-3plus4.test.',
+			kres.type.A, {
+				kres.str2ip('10.3.0.1'),
+				kres.str2ip('10.4.0.1')
+			}),
+		nil, ffi.C.KR_RANK_SECURE + ffi.C.KR_RANK_AUTH))
+	assert(c:insert(
+		gen_rrset('a166-66.test.',
+			kres.type.A, kres.str2ip('166.66.42.123')),
+		nil, ffi.C.KR_RANK_SECURE + ffi.C.KR_RANK_AUTH))
+	assert(c:insert(
+		gen_rrset('a167-81.test.',
+			kres.type.A, kres.str2ip('167.81.254.221')),
+		nil, ffi.C.KR_RANK_SECURE + ffi.C.KR_RANK_AUTH))
+	assert(c:insert(
+		gen_rrset('aaaa-db8-1.test.',
+			kres.type.AAAA, {
+				kres.str2ip('2001:db8:1::1'),
+				kres.str2ip('2001:db8:1::2'),
+			}),
+		nil, ffi.C.KR_RANK_SECURE + ffi.C.KR_RANK_AUTH))
+
+	c:commit()
+end
+
+local check_answer = require('test_utils').check_answer
+
+local function test_renumber()
+	check_answer('unknown IPv4 range passes through unaffected',
+		'a10-0.test.', kres.type.A, kres.rcode.NOERROR, '10.0.0.1')
+	check_answer('known IPv4 range is remapped when matching first-defined rule',
+		'a10-2.test.', kres.type.A, kres.rcode.NOERROR, '192.168.2.1')
+	check_answer('mix of known and unknown IPv4 ranges is remapped correctly',
+		'a10-0plus2.test.', kres.type.A, kres.rcode.NOERROR, {'192.168.2.1', '10.0.0.1'})
+	check_answer('mix of known and unknown IPv4 ranges is remapped correctly to exact address',
+		'a10-3plus4.test.', kres.type.A, kres.rcode.NOERROR, {'10.3.0.1', '192.168.3.10'})
+	check_answer('known IPv4 range is remapped when matching second-defined rule',
+		'a166-66.test.', kres.type.A, kres.rcode.NOERROR, '127.0.42.123')
+	check_answer('known IPv4 range is remapped when matching a rule with netmask not on a byte boundary',
+		'a167-81.test.', kres.type.A, kres.rcode.NOERROR, {'127.0.30.221'})
+
+	check_answer('two AAAA records',
+		'aaaa-db8-1.test.', kres.type.AAAA, kres.rcode.NOERROR,
+		{'2001:db8:2::2', '2001:db8:2::1'})
+end
+
+net.ipv4 = false
+net.ipv6 = false
+
+trust_anchors.remove('.')
+policy.add(policy.all(policy.DEBUG_ALWAYS))
+policy.add(policy.suffix(policy.PASS, {todname('test.')}))
+prepare_cache()
+
+log_level('debug')
+modules.load('renumber < cache')
+renumber.config({
+	-- Source subnet, destination subnet
+	{'10.2.0.0/24', '192.168.2.0'},
+	{'10.4.0.0/24', '192.168.3.10!'},
+	{'166.66.0.0/16', '127.0.0.0'},
+	{'167.81.255.0/19', '127.0.0.0'},
+	{'2001:db8:1::/48', '2001:db8:2::'},
+})
+
+return {
+	test_renumber,
+}