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

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2019 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 daemon_test
    21  
    22  import (
    23  	"net/http"
    24  	"path/filepath"
    25  
    26  	"gopkg.in/check.v1"
    27  
    28  	"github.com/snapcore/snapd/daemon"
    29  	"github.com/snapcore/snapd/dirs"
    30  	"github.com/snapcore/snapd/overlord"
    31  	"github.com/snapcore/snapd/overlord/snapstate"
    32  	"github.com/snapcore/snapd/snap"
    33  )
    34  
    35  var _ = check.Suite(&snapFileSuite{})
    36  
    37  type snapFileSuite struct{}
    38  
    39  func (s *snapFileSuite) SetUpTest(c *check.C) {
    40  	dirs.SetRootDir(c.MkDir())
    41  }
    42  
    43  func (s *snapFileSuite) TestGetFile(c *check.C) {
    44  	defer daemon.MockMuxVars(func(*http.Request) map[string]string {
    45  		return map[string]string{"name": "foo"}
    46  	})()
    47  
    48  	c.Check(daemon.SnapFileCmd.Path, check.Equals, "/v2/snaps/{name}/file")
    49  
    50  	o := overlord.Mock()
    51  	daemon.NewWithOverlord(o)
    52  	st := o.State()
    53  
    54  	type scenario struct {
    55  		status                   int
    56  		exists, active, try, wat bool
    57  		err                      string
    58  	}
    59  
    60  	req, err := http.NewRequest("GET", "/v2/snaps/foo/file", nil)
    61  	c.Assert(err, check.IsNil)
    62  
    63  	for i, scen := range []scenario{
    64  		{exists: true, active: true},
    65  		{exists: false, err: "no state entry for key"},
    66  		{exists: true, active: false, err: `cannot download file of inactive snap "foo"`},
    67  		{exists: true, active: true, try: true, err: `cannot download file for try-mode snap "foo"`},
    68  		{exists: true, wat: true, err: `cannot download file for snap "foo": internal error: .*`},
    69  	} {
    70  		var snapst snapstate.SnapState
    71  		if scen.wat {
    72  			st.Lock()
    73  			st.Set("snaps", 42)
    74  			st.Unlock()
    75  		} else {
    76  			if scen.exists {
    77  				sideInfo := &snap.SideInfo{Revision: snap.R(-1), RealName: "foo"}
    78  				snapst.Active = scen.active
    79  				snapst.Current = sideInfo.Revision
    80  				snapst.Sequence = append(snapst.Sequence, sideInfo)
    81  				if scen.try {
    82  					snapst.TryMode = true
    83  				}
    84  			}
    85  			st.Lock()
    86  			snapstate.Set(st, "foo", &snapst)
    87  			st.Unlock()
    88  		}
    89  
    90  		rsp := daemon.GetSnapFile(daemon.SnapFileCmd, req, nil)
    91  		if scen.err == "" {
    92  			c.Check(string(rsp.(daemon.FileResponse)), check.Equals, filepath.Join(dirs.SnapBlobDir, "foo_x1.snap"), check.Commentf("%d", i))
    93  		} else {
    94  			c.Assert(rsp, check.FitsTypeOf, &daemon.Resp{}, check.Commentf("%d", i))
    95  			result := rsp.(*daemon.Resp).Result
    96  			c.Assert(result, check.FitsTypeOf, &daemon.ErrorResult{}, check.Commentf("%d", i))
    97  			c.Check(result.(*daemon.ErrorResult).Message, check.Matches, scen.err, check.Commentf("%d", i))
    98  		}
    99  	}
   100  }