/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.configuration.helpers;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

import org.junit.jupiter.api.Test;

class GraphNameValidatorTest {
    @Test
    void shouldNotGetAnErrorForAValidGraphName() {
        checkGraphName("my.Vaild-Db123");
    }

    @Test
    void shouldGetAnErrorForAnEmptyGraphName() {
        Exception e = assertThrows(IllegalArgumentException.class, () -> checkGraphName(""));
        assertEquals("The provided graph name is empty.", e.getMessage());

        Exception e2 = assertThrows(NullPointerException.class, () -> GraphNameValidator.assertValidGraphName(null));
        assertEquals("The provided graph name is empty.", e2.getMessage());
    }

    @Test
    void shouldGetAnErrorForAGraphNameWithInvalidCharacters() {
        Exception e = assertThrows(IllegalArgumentException.class, () -> checkGraphName("graph%"));
        assertEquals(
                "Graph name 'graph%' contains illegal characters. Use simple ascii characters, numbers, dots and dashes.",
                e.getMessage());

        Exception e2 = assertThrows(IllegalArgumentException.class, () -> checkGraphName("data_base"));
        assertEquals(
                "Graph name 'data_base' contains illegal characters. Use simple ascii characters, numbers, dots and dashes.",
                e2.getMessage());

        Exception e3 = assertThrows(IllegalArgumentException.class, () -> checkGraphName("dataåäö"));
        assertEquals(
                "Graph name 'dataåäö' contains illegal characters. Use simple ascii characters, numbers, dots and dashes.",
                e3.getMessage());
    }

    @Test
    void shouldGetAnErrorForAGraphNameWithInvalidFirstCharacter() {
        Exception e = assertThrows(IllegalArgumentException.class, () -> checkGraphName("3graph"));
        assertEquals("Graph name '3graph' is not starting with an ASCII alphabetic character.", e.getMessage());

        Exception e2 = assertThrows(IllegalArgumentException.class, () -> checkGraphName("_graph"));
        assertEquals("Graph name '_graph' is not starting with an ASCII alphabetic character.", e2.getMessage());
    }

    @Test
    void shouldGetAnErrorForAGraphNamedGraph() {
        Exception e = assertThrows(IllegalArgumentException.class, () -> checkGraphName("graph"));
        assertEquals("Graph name 'graph' is reserved.", e.getMessage());
    }

    @Test
    void shouldGetAnErrorForAGraphNameWithInvalidLength() {
        // Too short
        Exception e = assertThrows(IllegalArgumentException.class, () -> checkGraphName("me"));
        assertEquals("The provided graph name must have a length between 3 and 63 characters.", e.getMessage());

        // Too long
        Exception e2 = assertThrows(
                IllegalArgumentException.class,
                () -> checkGraphName(
                        "ihaveallooootoflettersclearlymorethanishould-ihaveallooootoflettersclearlymorethanishould"));
        assertEquals("The provided graph name must have a length between 3 and 63 characters.", e2.getMessage());
    }

    private static void checkGraphName(String name) {
        GraphNameValidator.assertValidGraphName(new NormalizedGraphName(name));
    }
}
