github.com/bugraaydogar/snapd@v0.0.0-20210315170335-8c70bb858939/overlord/ifacestate/handlers_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2018 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 ifacestate_test
    21  
    22  import (
    23  	. "gopkg.in/check.v1"
    24  
    25  	"github.com/snapcore/snapd/overlord/ifacestate"
    26  	"github.com/snapcore/snapd/overlord/state"
    27  )
    28  
    29  type handlersSuite struct{}
    30  
    31  var _ = Suite(&handlersSuite{})
    32  
    33  func (s *handlersSuite) TestInSameChangeWaitChain(c *C) {
    34  	st := state.New(nil)
    35  	st.Lock()
    36  	defer st.Unlock()
    37  
    38  	// no wait chain (yet)
    39  	startT := st.NewTask("start", "...start")
    40  	intermediateT := st.NewTask("intermediateT", "...intermediateT")
    41  	searchT := st.NewTask("searchT", "...searchT")
    42  	c.Check(ifacestate.InSameChangeWaitChain(startT, searchT), Equals, false)
    43  
    44  	// add (indirect) wait chain
    45  	searchT.WaitFor(intermediateT)
    46  	intermediateT.WaitFor(startT)
    47  	c.Check(ifacestate.InSameChangeWaitChain(startT, searchT), Equals, true)
    48  }
    49  
    50  func (s *handlersSuite) TestInSameChangeWaitChainDifferentChanges(c *C) {
    51  	st := state.New(nil)
    52  	st.Lock()
    53  	defer st.Unlock()
    54  
    55  	t1 := st.NewTask("t1", "...")
    56  	chg1 := st.NewChange("chg1", "...")
    57  	chg1.AddTask(t1)
    58  
    59  	t2 := st.NewTask("t2", "...")
    60  	chg2 := st.NewChange("chg2", "...")
    61  	chg2.AddTask(t2)
    62  
    63  	// add a cross change wait chain
    64  	t2.WaitFor(t1)
    65  	c.Check(ifacestate.InSameChangeWaitChain(t1, t2), Equals, false)
    66  }