/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.painless;

import java.util.Collections;

/** tests for throw/try/catch in painless */
public class TryCatchTests extends ScriptTestCase {

    /** throws an exception */
    public void testThrow() {
        RuntimeException exception = expectScriptThrows(RuntimeException.class, () -> { exec("throw new RuntimeException('test')"); });
        assertEquals("test", exception.getMessage());
    }

    /** catches the exact exception */
    public void testCatch() {
        assertEquals(
            1,
            exec(
                "try { if (params.param == 'true') throw new RuntimeException('test'); } "
                    + "catch (RuntimeException e) { return 1; } return 2;",
                Collections.singletonMap("param", "true"),
                true
            )
        );
    }

    /** catches superclass of the exception */
    public void testCatchSuperclass() {
        assertEquals(
            1,
            exec(
                "try { if (params.param == 'true') throw new RuntimeException('test'); } " + "catch (Exception e) { return 1; } return 2;",
                Collections.singletonMap("param", "true"),
                true
            )
        );
    }

    /** tries to catch a different type of exception */
    public void testNoCatch() {
        RuntimeException exception = expectScriptThrows(RuntimeException.class, () -> {
            exec(
                "try { if (params.param == 'true') throw new RuntimeException('test'); } "
                    + "catch (ArithmeticException e) { return 1; } return 2;",
                Collections.singletonMap("param", "true"),
                true
            );
        });
        assertEquals("test", exception.getMessage());
    }

    public void testNoCatchBlock() {
        assertEquals(0, exec("try { return Integer.parseInt('f') } catch (NumberFormatException nfe) {} return 0;"));

        assertEquals(
            0,
            exec("try { return Integer.parseInt('f') } " + "catch (NumberFormatException nfe) {}" + "catch (Exception e) {}" + " return 0;")
        );

        assertEquals(
            0,
            exec(
                "try { throw new IllegalArgumentException('test') } "
                    + "catch (NumberFormatException nfe) {}"
                    + "catch (Exception e) {}"
                    + " return 0;"
            )
        );

        assertEquals(
            0,
            exec(
                "try { throw new IllegalArgumentException('test') } "
                    + "catch (NumberFormatException nfe) {}"
                    + "catch (IllegalArgumentException iae) {}"
                    + "catch (Exception e) {}"
                    + " return 0;"
            )
        );
    }

    public void testMultiCatch() {
        assertEquals(
            1,
            exec(
                "try { return Integer.parseInt('f') } "
                    + "catch (NumberFormatException nfe) {return 1;} "
                    + "catch (ArrayIndexOutOfBoundsException aioobe) {return 2;} "
                    + "catch (Exception e) {return 3;}"
            )
        );

        assertEquals(
            2,
            exec(
                "try { return new int[] {}[0] } "
                    + "catch (NumberFormatException nfe) {return 1;} "
                    + "catch (ArrayIndexOutOfBoundsException aioobe) {return 2;} "
                    + "catch (Exception e) {return 3;}"
            )
        );

        assertEquals(
            3,
            exec(
                "try { throw new IllegalArgumentException('test'); } "
                    + "catch (NumberFormatException nfe) {return 1;} "
                    + "catch (ArrayIndexOutOfBoundsException aioobe) {return 2;} "
                    + "catch (Exception e) {return 3;}"
            )
        );
    }
}