github.com/hugh712/snapd@v0.0.0-20200910133618-1a99902bd583/overlord/patch/patch3_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2016 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 patch_test
    21  
    22  import (
    23  	"io/ioutil"
    24  	"os"
    25  	"path/filepath"
    26  
    27  	. "gopkg.in/check.v1"
    28  
    29  	"github.com/snapcore/snapd/dirs"
    30  	"github.com/snapcore/snapd/overlord/patch"
    31  	"github.com/snapcore/snapd/overlord/state"
    32  )
    33  
    34  type patch3Suite struct{}
    35  
    36  var _ = Suite(&patch3Suite{})
    37  
    38  var statePatch3JSON = []byte(`
    39  {
    40          "last-task-id": 999,
    41          "last-change-id": 99,
    42  
    43  	"data": {
    44  		"patch-level": 2
    45  	},
    46          "changes": {
    47  		"1": {
    48  			"id": "1",
    49  			"kind": "some-change",
    50  			"summary": "summary-1",
    51  			"status": 0,
    52  			"task-ids": ["1"]
    53  		}
    54          },
    55  	"tasks": {
    56  		"1": {
    57  			"id": "1",
    58  			"kind": "link-snap",
    59  			"summary": "meep",
    60  			"status": 2,
    61  			"halt-tasks": [
    62  				"7"
    63  			],
    64  			"change": "1"
    65  		},
    66  		"2": {
    67  			"id": "2",
    68  			"kind": "unlink-snap",
    69  			"summary": "meep",
    70  			"status": 2,
    71  			"halt-tasks": [
    72  				"3"
    73  			],
    74  			"change": "1"
    75  		},
    76  		"3": {
    77  			"id": "3",
    78  			"kind": "unrelated",
    79  			"summary": "meep",
    80  			"status": 4,
    81  			"halt-tasks": [
    82  				"3"
    83  			],
    84  			"change": "1"
    85  		},
    86  		"4": {
    87  			"id": "4",
    88  			"kind": "unlink-current-snap",
    89  			"summary": "meep",
    90  			"status": 2,
    91  			"halt-tasks": [
    92  				"3"
    93  			],
    94  			"change": "1"
    95  		}
    96  	}
    97  }
    98  `)
    99  
   100  func (s *patch3Suite) SetUpTest(c *C) {
   101  	dirs.SetRootDir(c.MkDir())
   102  
   103  	err := os.MkdirAll(filepath.Dir(dirs.SnapStateFile), 0755)
   104  	c.Assert(err, IsNil)
   105  	err = ioutil.WriteFile(dirs.SnapStateFile, statePatch3JSON, 0644)
   106  	c.Assert(err, IsNil)
   107  }
   108  
   109  func (s *patch3Suite) TestPatch3(c *C) {
   110  	restorer := patch.MockLevel(3, 1)
   111  	defer restorer()
   112  
   113  	r, err := os.Open(dirs.SnapStateFile)
   114  	c.Assert(err, IsNil)
   115  	defer r.Close()
   116  	st, err := state.ReadState(nil, r)
   117  	c.Assert(err, IsNil)
   118  
   119  	// our mocks are correct
   120  	st.Lock()
   121  	c.Assert(st.Tasks(), HasLen, 4)
   122  	st.Unlock()
   123  
   124  	// go from patch level 2 -> 3
   125  	err = patch.Apply(st)
   126  	c.Assert(err, IsNil)
   127  
   128  	st.Lock()
   129  	defer st.Unlock()
   130  
   131  	// we got two more tasks
   132  	c.Assert(st.Tasks(), HasLen, 7)
   133  	for _, t := range st.Tasks() {
   134  		switch t.Kind() {
   135  		case "start-snap-services":
   136  			ht := t.WaitTasks()
   137  			c.Check(ht, HasLen, 1)
   138  			c.Check(ht[0].Kind(), Equals, "link-snap")
   139  		case "unlink-snap":
   140  			ht := t.WaitTasks()
   141  			c.Check(ht, HasLen, 1)
   142  			c.Check(ht[0].Kind(), Equals, "stop-snap-services")
   143  		case "unlink-current-snap":
   144  			ht := t.WaitTasks()
   145  			c.Check(ht, HasLen, 1)
   146  			c.Check(ht[0].Kind(), Equals, "stop-snap-services")
   147  		}
   148  	}
   149  }