/*
 * Copyright (c) 2006, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

// Contributors:
//     Oracle - initial API and implementation
//
package org.eclipse.persistence.jpa.tests.jpql.parser;

import org.junit.Test;
import static org.eclipse.persistence.jpa.tests.jpql.parser.JPQLParserTester.*;

@SuppressWarnings("nls")
public final class ComparisonExpressionTest extends JPQLParserTest {

    @Test
    public void test_JPQLQuery_01() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.name > 'Pascal'";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(path("e.name").greaterThan(string("'Pascal'")))
        );

        testQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_02() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age >= 21";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(path("e.age").greaterThanOrEqual(numeric(21)))
        );

        testQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_03() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age = 21";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(path("e.age").equal(numeric(21)))
        );

        testQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_04() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age < 21";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(path("e.age").lowerThan(numeric(21)))
        );

        testQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_05() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age <= 21";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(path("e.age").lowerThanOrEqual(numeric(21)))
        );

        testQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_06() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age <> 21";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(path("e.age").different(numeric(21)))
        );

        testQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_07() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age <>";

        ComparisonExpressionTester comparison = path("e.age").different(nullExpression());
        comparison.hasSpaceAfterIdentifier = false;

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(comparison)
        );

        testInvalidQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_08() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age <> ";

        ComparisonExpressionTester comparison = path("e.age").different(nullExpression());
        comparison.hasSpaceAfterIdentifier = true;

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(comparison)
        );

        testInvalidQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_09() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE <> e.age";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(nullExpression().different(path("e.age")))
        );

        testInvalidQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_10() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE <>";

        ComparisonExpressionTester comparison = nullExpression().different(nullExpression());
        comparison.hasSpaceAfterIdentifier = false;

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(comparison)
        );

        testInvalidQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_11() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE <> ";

        ComparisonExpressionTester comparison = nullExpression().different(nullExpression());
        comparison.hasSpaceAfterIdentifier = true;

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(comparison)
        );

        testInvalidQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_12() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age <";

        ComparisonExpressionTester comparison = path("e.age").lowerThan(nullExpression());
        comparison.hasSpaceAfterIdentifier = false;

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(comparison)
        );

        testInvalidQuery(jpqlQuery, selectStatement);
    }

    @Test
    public void test_JPQLQuery_13() {

        String jpqlQuery = "SELECT e FROM Employee e WHERE e.age < ORDER BY e.name";

        ExpressionTester selectStatement = selectStatement(
            select(variable("e")),
            from("Employee", "e"),
            where(path("e.age").lowerThan(nullExpression())),
            orderBy(orderByItem(path("e.name")))
        );

        testInvalidQuery(jpqlQuery, selectStatement);
    }
}