diff --git a/tests/test_version_information.cpp b/tests/test_version_information.cpp
index 165ee413..99ed70da 100644
--- a/tests/test_version_information.cpp
+++ b/tests/test_version_information.cpp
@@ -70,6 +70,7 @@ TEST(version_information, test_relations)
   auto v2 = VersionInformation::fromString("5.5.0.1101318");
   auto v3 = VersionInformation::fromString("5.5.1");
   auto v4 = VersionInformation::fromString("3.12.0.1234");
+  auto v5 = VersionInformation::fromString("3.11.0");
 
   EXPECT_EQ(v1, v1);
   EXPECT_LT(v2, v1);
@@ -80,6 +81,29 @@ TEST(version_information, test_relations)
   EXPECT_LT(v1, v3);
   EXPECT_LT(v4, v1);
   EXPECT_TRUE(v1 != v2);
+  EXPECT_LT(v5, v4);
+}
+
+TEST(version_information, test_invalid_inputs)
+{
+  // Empty string
+  EXPECT_THROW(VersionInformation::fromString(""), UrException);
+
+  // Too many components
+  EXPECT_THROW(VersionInformation::fromString("1.2.3.4.5"), UrException);
+
+  // Non-numeric values
+  EXPECT_THROW(VersionInformation::fromString("1.two.3"), std::invalid_argument);
+  EXPECT_THROW(VersionInformation::fromString("a.b.c.d"), std::invalid_argument);
+}
+
+TEST(version_information, test_is_e_series)
+{
+  auto v1 = VersionInformation::fromString("5.5.0.1101319");
+  auto v2 = VersionInformation::fromString("4.12.0.1234");
+
+  EXPECT_TRUE(v1.isESeries());
+  EXPECT_FALSE(v2.isESeries());
 }
 
 int main(int argc, char* argv[])
@@ -87,4 +111,4 @@ int main(int argc, char* argv[])
   ::testing::InitGoogleTest(&argc, argv);
 
   return RUN_ALL_TESTS();
-}
+}
\ No newline at end of file