Add minimal support of Connection.*ClientInfo()

At present, the driver doesn't support any properties and must retrieve
empty data instead of raising an error with an exception for
Statement.setClientInfo which will throw ClientInfoException for any
attempts to set a property.

Closes: #74

src/main/java/org/tarantool/jdbc/SQLConnection.java

@@ -479,13 +479,13 @@ private void throwUnknownClientProperties(Collection<Object> properties) throws
     @Override
     public String getClientInfo(String name) throws SQLException {
         checkNotClosed();
-        throw new SQLFeatureNotSupportedException();
+        return null;
     }
 
     @Override
     public Properties getClientInfo() throws SQLException {
         checkNotClosed();
-        throw new SQLFeatureNotSupportedException();
+        return new Properties();
     }
 
     @Override

src/test/java/org/tarantool/jdbc/JdbcConnectionIT.java

@@ -17,14 +17,17 @@
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.function.Executable;
 
+import java.sql.ClientInfoStatus;
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.sql.SQLClientInfoException;
 import java.sql.SQLException;
 import java.sql.SQLFeatureNotSupportedException;
 import java.sql.Statement;
+import java.util.Map;
 
 public class JdbcConnectionIT {
 
@@ -443,4 +446,19 @@ public void testGeneratedKeys() throws SQLException {
         );
     }
 
+    @Test
+    void testSetClientInfoProperties() {
+        String targetProperty = "ApplicationName";
+
+        SQLClientInfoException exception = assertThrows(
+            SQLClientInfoException.class,
+            () -> conn.setClientInfo(targetProperty, "TestApp")
+        );
+
+        Map<String, ClientInfoStatus> failedProperties = exception.getFailedProperties();
+        assertEquals(1, failedProperties.size());
+        assertEquals(ClientInfoStatus.REASON_UNKNOWN_PROPERTY, failedProperties.get(targetProperty));
+    }
+
 }
+

src/test/java/org/tarantool/jdbc/JdbcDatabaseMetaDataIT.java

@@ -75,6 +75,14 @@ public void tearDownTest() throws SQLException {
         testHelper.executeSql(CLEAN_SQL);
     }
 
+    @Test
+    public void testGetSupportedClientInfo() throws SQLException {
+        ResultSet rs = meta.getClientInfoProperties();
+        assertNotNull(rs);
+        assertFalse(rs.next());
+        rs.close();
+    }
+
     @Test
     public void testGetTableTypes() throws SQLException {
         ResultSet rs = meta.getTableTypes();