/*!
 * Copyright 2013 Raymond Hill
 *
 * Project: github.com/gorhill/cronexpression
 * File: cronexpression_test.go
 * Version: 1.0
 * License: GPL v3 see <https://www.gnu.org/licenses/gpl.html>
 *
 */

package cronexpression_test

/******************************************************************************/

import (
	"cronexpression"
	"testing"
	"time"
)

/******************************************************************************/

type crontimes struct {
    from string
    next string
}

type crontest struct {
	expr string
    layout string
    times []crontimes
}

var crontests = []crontest{
    // Seconds
    {
        "* * * * * * *",
        "2006-01-02 15:04:05",
        []crontimes{
            {"2013-01-01 00:00:00", "2013-01-01 00:00:01"},
            {"2013-01-01 00:00:59", "2013-01-01 00:01:00"},
            {"2013-01-01 00:59:59", "2013-01-01 01:00:00"},
            {"2013-01-01 23:59:59", "2013-01-02 00:00:00"},
            {"2013-02-28 23:59:59", "2013-03-01 00:00:00"},
            {"2016-02-28 23:59:59", "2016-02-29 00:00:00"},
            {"2012-12-31 23:59:59", "2013-01-01 00:00:00"},
        },
    },

    // Minutes
    {
        "* * * * *",
        "2006-01-02 15:04:05",
        []crontimes{
            {"2013-01-01 00:00:00", "2013-01-01 00:01:00"},
            {"2013-01-01 00:00:59", "2013-01-01 00:01:00"},
            {"2013-01-01 00:59:00", "2013-01-01 01:00:00"},
            {"2013-01-01 23:59:00", "2013-01-02 00:00:00"},
            {"2013-02-28 23:59:00", "2013-03-01 00:00:00"},
            {"2016-02-28 23:59:00", "2016-02-29 00:00:00"},
            {"2012-12-31 23:59:00", "2013-01-01 00:00:00"},
        },
    },

    // Minutes with interval
    {
        "17-43/5 * * * *",
        "2006-01-02 15:04:05",
        []crontimes{
            {"2013-01-01 00:00:00", "2013-01-01 00:17:00"},
            {"2013-01-01 00:16:59", "2013-01-01 00:17:00"},
            {"2013-01-01 00:30:00", "2013-01-01 00:32:00"},
            {"2013-01-01 00:50:00", "2013-01-01 01:17:00"},
            {"2013-01-01 23:50:00", "2013-01-02 00:17:00"},
            {"2013-02-28 23:50:00", "2013-03-01 00:17:00"},
            {"2016-02-28 23:50:00", "2016-02-29 00:17:00"},
            {"2012-12-31 23:50:00", "2013-01-01 00:17:00"},
        },
    },

    // Minutes interval, list
    {
        "15-30/4,55 * * * *",
        "2006-01-02 15:04:05",
        []crontimes{
            {"2013-01-01 00:00:00", "2013-01-01 00:15:00"},
            {"2013-01-01 00:16:00", "2013-01-01 00:19:00"},
            {"2013-01-01 00:30:00", "2013-01-01 00:55:00"},
            {"2013-01-01 00:55:00", "2013-01-01 01:15:00"},
            {"2013-01-01 23:55:00", "2013-01-02 00:15:00"},
            {"2013-02-28 23:55:00", "2013-03-01 00:15:00"},
            {"2016-02-28 23:55:00", "2016-02-29 00:15:00"},
            {"2012-12-31 23:54:00", "2012-12-31 23:55:00"},
            {"2012-12-31 23:55:00", "2013-01-01 00:15:00"},
        },
    },

    // Days of week
    {
        "0 0 * * MON",
        "MON 2006-01-02 15:04",
        []crontimes{
            {"2013-01-01 00:00:00", "MON 2013-01-07 00:00"},
            {"2013-01-28 00:00:00", "MON 2013-02-04 00:00"},
            {"2013-12-30 00:30:00", "MON 2014-01-06 00:00"},
        },
    },

    // TODO: more tests
}

func TestCronExpressions(t *testing.T) {
	for _, test := range crontests {
        for _, times := range test.times {
		    from, _ := time.Parse("2006-01-02 15:04:05", times.from)
		    next := cronexpression.NextTimeFromString(test.expr, from)
            nextstr := next.Format(test.layout)
		    if nextstr != times.next {
			    t.Errorf("(\"%s\").NextTime(\"%s\") = \"%s\", got \"%s\"", test.expr, times.from, times.next, nextstr)
            }
		}
	}
}