[2218] Test that 0 length NSEC3 hash salts are compared correctly

src/lib/datasrc/memory/tests/memory_client_unittest.cc

@@ -241,6 +241,20 @@ TEST_F(MemoryClientTest, loadNSEC3Signed) {
     EXPECT_TRUE(result.zone_data->isNSEC3Signed());
 }
 
+TEST_F(MemoryClientTest, loadNSEC3EmptySalt) {
+    // Load NSEC3 with empty ("-") salt. This should not throw or crash
+    // or anything.
+    client_->load(Name("example.org"),
+                  TEST_DATA_DIR "/example.org-nsec3-empty-salt.zone");
+    isc::datasrc::memory::ZoneTable::FindResult
+        result(client_->findZoneData(Name("example.org")));
+    EXPECT_EQ(result::SUCCESS, result.code);
+    ASSERT_NE(static_cast<ZoneData*>(NULL),
+              result.zone_data);
+    EXPECT_TRUE(result.zone_data->isSigned());
+    EXPECT_TRUE(result.zone_data->isNSEC3Signed());
+}
+
 TEST_F(MemoryClientTest, loadNSEC3SignedNoParam) {
     client_->load(Name("example.org"),
                   TEST_DATA_DIR "/example.org-nsec3-signed-no-param.zone");

src/lib/datasrc/memory/tests/testdata/Makefile.am

@@ -19,6 +19,7 @@ EXTRA_DIST += example.org-multiple-dname.zone
 EXTRA_DIST += example.org-multiple-nsec3.zone
 EXTRA_DIST += example.org-multiple-nsec3param.zone
 EXTRA_DIST += example.org-multiple.zone
+EXTRA_DIST += example.org-nsec3-empty-salt.zone
 EXTRA_DIST += example.org-nsec3-fewer-labels.zone example.org-nsec3-more-labels.zone
 EXTRA_DIST += example.org-nsec3-signed-no-param.zone
 EXTRA_DIST += example.org-nsec3-signed.zone

src/lib/datasrc/memory/tests/testdata/example.org-nsec3-empty-salt.zone

@@ -0,0 +1,14 @@
+example.org.				      86400 IN SOA	ns.example.org. ns.example.org. 2012092602 7200 3600 2592000 1200
+example.org.				      86400 IN RRSIG	SOA 7 2 86400 20120301040838 20120131040838 19562 example.org. Jt9wCRLS5TQxZH0IBqrM9uMGD453rIoxYopfM9AjjRZfEx+HGlBpOZeR pGN7yLcN+URnicOD0ydLHiakaBODiZyNoYCKYG5d2ZOhL+026REnDKNM 0m5T3X3sczP+l55An/GITheTdrKt3Y1Ouc2yKI8ro8JjOxV/a4nGDWjK x9A=
+example.org.				      86400 IN NS	ns.example.org.
+example.org.				      86400 IN RRSIG	NS 7 2 86400 20120301040838 20120131040838 19562 example.org. gYXL3xK4IFdJU6TtiVuzqDBb2MeA8xB3AKtHlJGFTfTRNHyuej0ZGovx TeUYsLYmoiGYaJG66iD1tYYFq0qdj0xWq+LEa53ACtKvYf9IIwK4ijJs k0g6xCNavc6/qPppymDhN7MvoFVkW59uJa0HPWlsIIuRlEAr7xyt85vq yoA=
+example.org.				      86400 IN DNSKEY	256 3 7 AwEAAbrBkKf2gmGtG4aogZY4svIZCrOLLZlQzVHwz7WxJdTR8iEnvz/x Q/jReDroS5CBZWvzwLlhPIpsJAojx0oj0RvfJNsz3+6LN8q7x9u6+86B 85CYjTk3dcFOebgkF4fXr7/kkOX+ZY94Zk0Z1+pUC3eY4gkKcyME/Uxm O18PBTeB
+example.org.				      86400 IN RRSIG	DNSKEY 7 2 86400 20120301040838 20120131040838 19562 example.org. d0eLF8JqNHaGuBSX0ashU5c1O/wyWU43UUsKGrMQIoBDiJ588MWQOnas rwvW6vdkLNqRqCsP/B4epV/EtLL0tBsk5SHkTYbNo80gGrBufQ6YrWRr Ile8Z+h+MR4y9DybbjmuNKqaO4uQMg/X6+4HqRAKx1lmZMTcrcVeOwDM ZA4=
+example.org.				      0	IN NSEC3PARAM	1 0 10 -
+example.org.				      0	IN RRSIG	NSEC3PARAM 7 2 0 20120301040838 20120131040838 19562 example.org. Ggs5MiQDlXXt22Fz9DNg3Ujc0T6MBfumlRkd8/enBbJwLmqw2QXAzDEk pjUeGstCEHKzxJDJstavGoCpTDJgoV4Fd9szooMx69rzPrq9tdoM46jG xZHqw+Pv2fkRGC6aP7ZX1r3Qnpwpk47AQgATftbO4G6KcMcO8JoKE47x XLM=
+ns.example.org.				      86400 IN A	192.0.2.1
+ns.example.org.				      86400 IN RRSIG	A 7 3 86400 20120301040838 20120131040838 19562 example.org. dOH+Dxib8VcGnjLrKILsqDhS1wki6BWk1dZwpOGUGHyLWcLNW8ygWY2o r29jPhHtaFCNWpn46JebgnXDPRiQjaY3dQqL8rcf2QX1e3+Cicw1OSrs S0sUDE5DmMNEac+ZCUQ0quCStZTCldl05hlspV2RS92TpApnoOK0nXMp Uak=
+09GM5T42SMIMT7R8DF6RTG80SFMS1NLU.example.org. 1200 IN NSEC3	1 0 10 - RKOF8QMFRB5F2V9EJHFBVB2JPVSA0DJD A RRSIG
+09GM5T42SMIMT7R8DF6RTG80SFMS1NLU.example.org. 1200 IN RRSIG	NSEC3 7 3 1200 20120301040838 20120131040838 19562 example.org. EdwMeepLf//lV+KpCAN+213Scv1rrZyj4i2OwoCP4XxxS3CWGSuvYuKO yfZc8wKRcrD/4YG6nZVXE0s5O8NahjBJmDIyVt4WkfZ6QthxGg8ggLVv cD3dFksPyiKHf/WrTOZPSsxvN5m/i1Ey6+YWS01Gf3WDCMWDauC7Nmh3 CTM=
+RKOF8QMFRB5F2V9EJHFBVB2JPVSA0DJD.example.org. 1200 IN NSEC3	1 0 10 - 09GM5T42SMIMT7R8DF6RTG80SFMS1NLU NS SOA RRSIG DNSKEY NSEC3PARAM
+RKOF8QMFRB5F2V9EJHFBVB2JPVSA0DJD.example.org. 1200 IN RRSIG	NSEC3 7 3 1200 20120301040838 20120131040838 19562 example.org. j7d8GL4YqX035FBcPPsEcSWHjWcKdlQMHLL4TB67xVNFnl4SEFQCp4OO AtPap5tkKakwgWxoQVN9XjnqrBz+oQhofDkB3aTatAjIIkcwcnrm3AYQ rTI3E03ySiRwuCPKVmHOLUV2cG6O4xzcmP+MYZcvPTS8V3F5LlaU22i7 A3E=