github.com/hugh712/snapd@v0.0.0-20200910133618-1a99902bd583/snapdtool/info_file_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2019-2020 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package snapdtool_test
    21  
    22  import (
    23  	"io/ioutil"
    24  	"path/filepath"
    25  
    26  	. "gopkg.in/check.v1"
    27  
    28  	"github.com/snapcore/snapd/snapdtool"
    29  )
    30  
    31  type infoFileSuite struct{}
    32  
    33  var _ = Suite(&infoFileSuite{})
    34  
    35  func (s *infoFileSuite) TestNoVersionFile(c *C) {
    36  	_, err := snapdtool.SnapdVersionFromInfoFile("/non-existing-file")
    37  	c.Assert(err, ErrorMatches, `cannot open snapd info file "/non-existing-file":.*`)
    38  }
    39  
    40  func (s *infoFileSuite) TestNoVersionData(c *C) {
    41  	top := c.MkDir()
    42  	infoFile := filepath.Join(top, "info")
    43  	c.Assert(ioutil.WriteFile(infoFile, []byte("foo"), 0644), IsNil)
    44  
    45  	_, err := snapdtool.SnapdVersionFromInfoFile(infoFile)
    46  	c.Assert(err, ErrorMatches, `cannot find snapd version information in "foo"`)
    47  }
    48  
    49  func (s *infoFileSuite) TestVersionHappy(c *C) {
    50  	top := c.MkDir()
    51  	infoFile := filepath.Join(top, "info")
    52  	c.Assert(ioutil.WriteFile(infoFile, []byte("VERSION=1.2.3"), 0644), IsNil)
    53  
    54  	ver, err := snapdtool.SnapdVersionFromInfoFile(infoFile)
    55  	c.Assert(err, IsNil)
    56  	c.Check(ver, Equals, "1.2.3")
    57  }