diff --git a/src/lib/dns/tests/rdata_ds_like_unittest.cc b/src/lib/dns/tests/rdata_ds_like_unittest.cc
index 6172431d77..7838a34980 100644
--- a/src/lib/dns/tests/rdata_ds_like_unittest.cc
+++ b/src/lib/dns/tests/rdata_ds_like_unittest.cc
@@ -85,6 +85,18 @@ TYPED_TEST(Rdata_DS_LIKE_Test, createFromWire_DS_LIKE) {
                                           "rdata_ds_fromWire")));
 }
 
+TYPED_TEST(Rdata_DS_LIKE_Test, createFromLexer_DS_LIKE) {
+    EXPECT_EQ(0, this->rdata_ds_like.compare(
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     ds_like_txt)));
+
+    // Check that bad input throws as usual
+    EXPECT_THROW({
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     "99999 5 2 BEEF");
+    }, InvalidRdataText);
+}
+
 TYPED_TEST(Rdata_DS_LIKE_Test, assignment_DS_LIKE) {
     TypeParam copy((string(ds_like_txt)));
     copy = this->rdata_ds_like;
diff --git a/src/lib/dns/tests/rdata_nsec3param_unittest.cc b/src/lib/dns/tests/rdata_nsec3param_unittest.cc
index 7558b42a74..115d3d3f31 100644
--- a/src/lib/dns/tests/rdata_nsec3param_unittest.cc
+++ b/src/lib/dns/tests/rdata_nsec3param_unittest.cc
@@ -86,6 +86,13 @@ TEST_F(Rdata_NSEC3PARAM_Test, createFromWire) {
     }
 }
 
+TEST_F(Rdata_NSEC3PARAM_Test, createFromLexer) {
+    const generic::NSEC3PARAM rdata_nsec3param(nsec3param_txt);
+    EXPECT_EQ(0, rdata_nsec3param.compare(
+        *test::createRdataUsingLexer(RRType::NSEC3PARAM(), RRClass::IN(),
+                                     nsec3param_txt)));
+}
+
 TEST_F(Rdata_NSEC3PARAM_Test, toWireRenderer) {
     renderer.skip(2);
     const generic::NSEC3PARAM rdata_nsec3param(nsec3param_txt);
diff --git a/src/lib/dns/tests/rdata_txt_like_unittest.cc b/src/lib/dns/tests/rdata_txt_like_unittest.cc
index 981265e380..7ff9ac9a0d 100644
--- a/src/lib/dns/tests/rdata_txt_like_unittest.cc
+++ b/src/lib/dns/tests/rdata_txt_like_unittest.cc
@@ -185,6 +185,18 @@ TYPED_TEST(Rdata_TXT_LIKE_Test, createFromWire) {
                  DNSMessageFORMERR);
 }
 
+TYPED_TEST(Rdata_TXT_LIKE_Test, createFromLexer) {
+    EXPECT_EQ(0, this->rdata_txt_like.compare(
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     "Test String")));
+    EXPECT_EQ(0, this->rdata_txt_like_empty.compare(
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     "")));
+    EXPECT_EQ(0, this->rdata_txt_like_quoted.compare(
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     "\"Test String\"")));
+}
+
 TYPED_TEST(Rdata_TXT_LIKE_Test, toWireBuffer) {
     this->rdata_txt_like.toWire(this->obuffer);
     EXPECT_PRED_FORMAT4(UnitTestUtil::matchWireData,