diff --git a/src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsDomainHttpSetupHostingAssetValidatorUnitTest.java b/src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsDomainHttpSetupHostingAssetValidatorUnitTest.java
index c84dd2b1..fa75cded 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsDomainHttpSetupHostingAssetValidatorUnitTest.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsDomainHttpSetupHostingAssetValidatorUnitTest.java
@@ -14,6 +14,12 @@ import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.DOMA
 import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.DOMAIN_SETUP;
 import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.MANAGED_WEBSPACE;
 import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.UNIX_USER;
+import static net.hostsharing.hsadminng.hs.hosting.asset.validators.HsDomainDnsSetupHostingAssetValidator.RR_COMMENT;
+import static net.hostsharing.hsadminng.hs.hosting.asset.validators.HsDomainDnsSetupHostingAssetValidator.RR_RECORD_DATA;
+import static net.hostsharing.hsadminng.hs.hosting.asset.validators.HsDomainDnsSetupHostingAssetValidator.RR_RECORD_TYPE;
+import static net.hostsharing.hsadminng.hs.hosting.asset.validators.HsDomainDnsSetupHostingAssetValidator.RR_REGEX_IN;
+import static net.hostsharing.hsadminng.hs.hosting.asset.validators.HsDomainDnsSetupHostingAssetValidator.RR_REGEX_NAME;
+import static net.hostsharing.hsadminng.hs.hosting.asset.validators.HsDomainDnsSetupHostingAssetValidator.RR_REGEX_TTL;
 import static org.assertj.core.api.Assertions.assertThat;
 
 class HsDomainHttpSetupHostingAssetValidatorUnitTest {
@@ -160,4 +166,32 @@ class HsDomainHttpSetupHostingAssetValidatorUnitTest {
                 "'DOMAIN_HTTP_SETUP:example.org|HTTP.config.subdomains' is expected to match any of [(?!-)[A-Za-z0-9-]{1,63}(?<!-)] but '@' does not match",
                 "'DOMAIN_HTTP_SETUP:example.org|HTTP.config.subdomains' is expected to match any of [(?!-)[A-Za-z0-9-]{1,63}(?<!-)] but 'example.com' does not match");
     }
+
+    @Test
+    void validStringMatchesRegEx() {
+        assertThat("@ ").matches(RR_REGEX_NAME);
+        assertThat("ns ").matches(RR_REGEX_NAME);
+        assertThat("example.com. ").matches(RR_REGEX_NAME);
+
+        assertThat("12400 ").matches(RR_REGEX_TTL);
+        assertThat("12400\t\t ").matches(RR_REGEX_TTL);
+        assertThat("12400 \t\t").matches(RR_REGEX_TTL);
+        assertThat("1h30m ").matches(RR_REGEX_TTL);
+        assertThat("30m ").matches(RR_REGEX_TTL);
+
+        assertThat("IN ").matches(RR_REGEX_IN);
+        assertThat("IN\t\t ").matches(RR_REGEX_IN);
+        assertThat("IN \t\t").matches(RR_REGEX_IN);
+
+        assertThat("CNAME ").matches(RR_RECORD_TYPE);
+        assertThat("CNAME\t\t ").matches(RR_RECORD_TYPE);
+        assertThat("CNAME \t\t").matches(RR_RECORD_TYPE);
+
+        assertThat("example.com.").matches(RR_RECORD_DATA);
+        assertThat("123.123.123.123").matches(RR_RECORD_DATA);
+        assertThat("(some more complex argument in parenthesis)").matches(RR_RECORD_DATA);
+        assertThat("\"some more complex argument; including a semicolon\"").matches(RR_RECORD_DATA);
+
+        assertThat("; whatever ; \" really anything").matches(RR_COMMENT);
+    }
 }