[2218] Add recursive findNSEC3() tests

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

@@ -1486,7 +1486,21 @@ const TestData nsec3_data[] = {
      {"n5", false,  true, 4, "2T7B4G4VSA5SMI47K61MV5BV1A22BOJR", NULL},
      {"n6", false, false, 4, "2T7B4G4VSA5SMI47K61MV5BV1A22BOJR", NULL},
      {"n7", false,  true, 4, "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN", NULL},
-     {"n8", false, false, 4, "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN", NULL}
+     {"n8", false, false, 4, "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN", NULL},
+     {"n0",  true,  true, 3, "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+         "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN"},
+     {"n1",  true,  true, 4, "01UDEMVP1J2F7EG6JEBPS17VP3N8I58H", NULL},
+     {"n2",  true,  true, 3, "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+         "01UDEMVP1J2F7EG6JEBPS17VP3N8I58H"},
+     {"n3",  true,  true, 4, "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM", NULL},
+     {"n4",  true,  true, 3, "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+         "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM"},
+     {"n5",  true,  true, 4, "2T7B4G4VSA5SMI47K61MV5BV1A22BOJR", NULL},
+     {"n6",  true,  true, 3, "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+         "2T7B4G4VSA5SMI47K61MV5BV1A22BOJR"},
+     {"n7",  true,  true, 4, "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN", NULL},
+     {"n8",  true,  true, 3, "0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+         "R53BQ7CC2UVMUBFU5OCMM6PERS9TK9EN"}
 };
 
 const size_t data_count(sizeof(nsec3_data) / sizeof(*nsec3_data));