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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2025 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package strutil_test
import (
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/strutil"
)
type rangeSuite struct{}
var _ = Suite(&rangeSuite{})
func (s *rangeSuite) TestParseRange(c *C) {
r, err := strutil.ParseRange("20-100,0,3,2")
c.Assert(err, IsNil)
// Parsed and sorted by start
c.Check(r[0], Equals, strutil.RangeSpan{0, 0})
c.Check(r[1], Equals, strutil.RangeSpan{2, 2})
c.Check(r[2], Equals, strutil.RangeSpan{3, 3})
c.Check(r[3], Equals, strutil.RangeSpan{20, 100})
c.Check(r.Size(), Equals, 84)
c.Check(r.Intersects(strutil.RangeSpan{0, 1}), Equals, true)
c.Check(r.Intersects(strutil.RangeSpan{5, 20}), Equals, true)
c.Check(r.Intersects(strutil.RangeSpan{5, 5}), Equals, false)
c.Check(r.String(), Equals, "0,2,3,20-100")
}
func (s *rangeSuite) TestParseRangeError(c *C) {
_, err := strutil.ParseRange(" 1")
c.Assert(err, ErrorMatches, `strconv.ParseUint: parsing " 1": invalid syntax`)
_, err = strutil.ParseRange("1,0-2")
c.Assert(err, ErrorMatches, `overlapping range span found "0-2"`)
_, err = strutil.ParseRange("1-3,0-2")
c.Assert(err, ErrorMatches, `overlapping range span found "0-2"`)
_, err = strutil.ParseRange("0-2,1-3")
c.Assert(err, ErrorMatches, `overlapping range span found "1-3"`)
_, err = strutil.ParseRange("0-2,2-3")
c.Assert(err, ErrorMatches, `overlapping range span found "2-3"`)
_, err = strutil.ParseRange("1-")
c.Assert(err, ErrorMatches, `invalid range span end "1-": .*`)
_, err = strutil.ParseRange("a-2")
c.Assert(err, ErrorMatches, `invalid range span start "a-2": .*`)
_, err = strutil.ParseRange("1--2")
c.Assert(err, ErrorMatches, `invalid range span end "1--2": strconv.ParseUint: parsing \"-2\": invalid syntax`)
_, err = strutil.ParseRange("2-1")
c.Assert(err, ErrorMatches, `invalid range span "2-1": ends before it starts`)
}
func (s *rangeSuite) TestString(c *C) {
for _, tc := range []struct {
input, expected string
}{
{"2,1", "1,2"},
{"4,0,2-3,1", "0,1,2-3,4"},
{"0-10000", "0-10000"},
{"10", "10"},
} {
r, err := strutil.ParseRange(tc.input)
c.Assert(err, IsNil)
c.Check(r.String(), Equals, tc.expected, Commentf("input: %q, expected: %q", tc.input, tc.expected))
}
}
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