/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */
package org.elasticsearch.persistent.decider;

import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.persistent.PersistentTasksDecidersTestCase;

public class EnableAssignmentDeciderTests extends PersistentTasksDecidersTestCase {

    public void testAllocationValues() {
        final String all = randomFrom("all", "All", "ALL");
        assertEquals(EnableAssignmentDecider.Allocation.ALL, EnableAssignmentDecider.Allocation.fromString(all));

        final String none = randomFrom("none", "None", "NONE");
        assertEquals(EnableAssignmentDecider.Allocation.NONE, EnableAssignmentDecider.Allocation.fromString(none));
    }

    public void testEnableAssignment() {
        final int nbTasks = randomIntBetween(1, 10);
        final int nbNodes = randomIntBetween(1, 5);
        final EnableAssignmentDecider.Allocation allocation = randomFrom(EnableAssignmentDecider.Allocation.values());

        Settings settings = Settings.builder()
            .put(EnableAssignmentDecider.CLUSTER_TASKS_ALLOCATION_ENABLE_SETTING.getKey(), allocation.toString())
            .build();
        updateSettings(settings);

        ClusterState clusterState = reassign(createClusterStateWithTasks(nbNodes, nbTasks));
        if (allocation == EnableAssignmentDecider.Allocation.ALL) {
            assertNbAssignedTasks(nbTasks, clusterState);
        } else {
            assertNbUnassignedTasks(nbTasks, clusterState);
        }
    }
}