diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index 135ec60..44028af 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -1546,3 +1546,19 @@
 X509 Get time (UTC invalid sec)
 depends_on:POLARSSL_X509_USE_C
 x509_get_time:ASN1_UTC_TIME:"001130235960Z":POLARSSL_ERR_X509_INVALID_DATE:0:0:0:0:0:0
+
+X509 Get time (Generalized Time invalid leap year multiple of 4 and 100)
+depends_on:POLARSSL_X509_USE_C
+x509_get_time:ASN1_GENERALIZED_TIME:"19000229000000Z":POLARSSL_ERR_X509_INVALID_DATE:0:0:0:0:0:0
+
+X509 Get time (Generalized Time year multiple of 4 and not multiple of 100)
+depends_on:POLARSSL_X509_USE_C
+x509_get_time:ASN1_GENERALIZED_TIME:"19920229000000Z":0:1992:2:29:0:0:0
+
+X509 Get time (Generalized Time year multiple of 400)
+depends_on:POLARSSL_X509_USE_C
+x509_get_time:ASN1_GENERALIZED_TIME:"20000229000000Z":0:2000:2:29:0:0:0
+
+X509 Get time (Generalized Time invalid leap year not multiple of 4, 100 or 400)
+depends_on:POLARSSL_X509_USE_C
+x509_get_time:ASN1_GENERALIZED_TIME:"19910229000000Z":POLARSSL_ERR_X509_INVALID_DATE:0:0:0:0:0:0