robfig_cron/schedule_test.go

package cron

import (
	"testing"
	"time"
)

func TestActivation(t *testing.T) {
	tests := []struct {
		time, spec string
		expected   bool
	}{
		// Every fifteen minutes.
		{"Mon Jul 9 15:00 2012", "0 0/15 * * *", true},
		{"Mon Jul 9 15:45 2012", "0 0/15 * * *", true},
		{"Mon Jul 9 15:40 2012", "0 0/15 * * *", false},

		// Every fifteen minutes, starting at 5 minutes.
		{"Mon Jul 9 15:05 2012", "0 5/15 * * *", true},
		{"Mon Jul 9 15:20 2012", "0 5/15 * * *", true},
		{"Mon Jul 9 15:50 2012", "0 5/15 * * *", true},

		// Named months
		{"Sun Jul 15 15:00 2012", "0 0/15 * * Jul", true},
		{"Sun Jul 15 15:00 2012", "0 0/15 * * Jun", false},

		// Everything set.
		{"Sun Jul 15 08:30 2012", "0 30 08 ? Jul Sun", true},
		{"Sun Jul 15 08:30 2012", "0 30 08 15 Jul ?", true},
		{"Mon Jul 16 08:30 2012", "0 30 08 ? Jul Sun", false},
		{"Mon Jul 16 08:30 2012", "0 30 08 15 Jul ?", false},

		// Predefined schedules
		{"Mon Jul 9 15:00 2012", "@hourly", true},
		{"Mon Jul 9 15:04 2012", "@hourly", false},
		{"Mon Jul 9 15:00 2012", "@daily", false},
		{"Mon Jul 9 00:00 2012", "@daily", true},
		{"Mon Jul 9 00:00 2012", "@weekly", false},
		{"Sun Jul 8 00:00 2012", "@weekly", true},
		{"Sun Jul 8 01:00 2012", "@weekly", false},
		{"Sun Jul 8 00:00 2012", "@monthly", false},
		{"Sun Jul 1 00:00 2012", "@monthly", true},

		// Test interaction of DOW and DOM.
		// If both are specified, then only one needs to match.
		{"Sun Jul 15 00:00 2012", "0 * * 1,15 * Sun", true},
		{"Fri Jun 15 00:00 2012", "0 * * 1,15 * Sun", true},
		{"Wed Aug 1 00:00 2012", "0 * * 1,15 * Sun", true},

		// However, if one has a star, then both need to match.
		{"Sun Jul 15 00:00 2012", "0 * * * * Mon", false},
		{"Sun Jul 15 00:00 2012", "0 * * */10 * Sun", false},
		{"Mon Jul 9 00:00 2012", "0 * * 1,15 * *", false},
		{"Sun Jul 15 00:00 2012", "0 * * 1,15 * *", true},
		{"Sun Jul 15 00:00 2012", "0 * * */2 * Sun", true},
	}

	for _, test := range tests {
		actual := Parse(test.spec).Next(getTime(test.time).Add(-1 * time.Second))
		expected := getTime(test.time)
		if test.expected && expected != actual || !test.expected && expected == actual {
			t.Errorf("Fail evaluating %s on %s: (expected) %s != %s (actual)",
				test.spec, test.time, expected, actual)
		}
	}
}

func TestNext(t *testing.T) {
	runs := []struct {
		time, spec string
		expected   string
	}{
		// Simple cases
		{"Mon Jul 9 14:45 2012", "0 0/15 * * *", "Mon Jul 9 15:00 2012"},
		{"Mon Jul 9 14:59 2012", "0 0/15 * * *", "Mon Jul 9 15:00 2012"},
		{"Mon Jul 9 14:59:59 2012", "0 0/15 * * *", "Mon Jul 9 15:00 2012"},

		// Wrap around hours
		{"Mon Jul 9 15:45 2012", "0 20-35/15 * * *", "Mon Jul 9 16:20 2012"},

		// Wrap around days
		{"Mon Jul 9 23:46 2012", "0 */15 * * *", "Tue Jul 10 00:00 2012"},
		{"Mon Jul 9 23:45 2012", "0 20-35/15 * * *", "Tue Jul 10 00:20 2012"},
		{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 * * *", "Tue Jul 10 00:20:15 2012"},
		{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 1/2 * *", "Tue Jul 10 01:20:15 2012"},
		{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 10-12 * *", "Tue Jul 10 10:20:15 2012"},

		{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 1/2 */2 * *", "Thu Jul 11 01:20:15 2012"},
		{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 * 9-20 * *", "Wed Jul 10 00:20:15 2012"},
		{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 * 9-20 Jul *", "Wed Jul 10 00:20:15 2012"},

		// Wrap around months
		{"Mon Jul 9 23:35 2012", "0 0 0 9 Apr-Oct ?", "Thu Aug 9 00:00 2012"},
		{"Mon Jul 9 23:35 2012", "0 0 0 */5 Apr,Aug,Oct Mon", "Mon Aug 6 00:00 2012"},
		{"Mon Jul 9 23:35 2012", "0 0 0 */5 Oct Mon", "Mon Oct 1 00:00 2012"},

		// Wrap around years
		{"Mon Jul 9 23:35 2012", "0 0 0 * Feb Mon", "Mon Feb 4 00:00 2013"},
		{"Mon Jul 9 23:35 2012", "0 0 0 * Feb Mon/2", "Fri Feb 1 00:00 2013"},

		// Wrap around minute, hour, day, month, and year
		{"Mon Dec 31 23:59:45 2012", "0 * * * * *", "Tue Jan 1 00:00:00 2013"},

		// Leap year
		{"Mon Jul 9 23:35 2012", "0 0 0 29 Feb ?", "Mon Feb 29 00:00 2016"},

		// Daylight savings time
		{"Sun Mar 11 00:00 2012 EST", "0 30 2 11 Mar ?", "Mon Mar 11 02:30 2013 EDT"},

		// Unsatisfiable
		{"Mon Jul 9 23:35 2012", "0 0 0 30 Feb ?", ""},
		{"Mon Jul 9 23:35 2012", "0 0 0 31 Apr ?", ""},
	}

	for _, c := range runs {
		actual := Parse(c.spec).Next(getTime(c.time))
		expected := getTime(c.expected)
		if actual != expected {
			t.Errorf("%s, \"%s\": (expected) %v != %v (actual)", c.time, c.spec, expected, actual)
		}
	}
}

func getTime(value string) time.Time {
	if value == "" {
		return time.Time{}
	}
	t, err := time.Parse("Mon Jan 2 15:04 2006", value)
	if err != nil {
		t, err = time.Parse("Mon Jan 2 15:04:05 2006", value)
		if err != nil {
			t, err = time.Parse("Mon Jan 2 15:04 2006 MST", value)
			if err != nil {
				panic(err)
			}
		}
	}

	return t
}