package main

import (
	"strings"
	"testing"
	"time"
)

func fixedTime(year, month, day int) time.Time {
	return time.Date(year, time.Month(month), day, 0, 0, 0, 0, time.UTC)
}

func splitLines(s string) []string {
	s = strings.TrimRight(s, "\n")
	if s == "" {
		return nil
	}
	return strings.Split(s, "\n")
}

func assertContains(t *testing.T, s, substr string) {
	t.Helper()
	if !strings.Contains(s, substr) {
		t.Errorf("expected %q to contain %q", s, substr)
	}
}

func containsStr(s, substr string) bool {
	return strings.Contains(s, substr)
}