github.com/cloudbase/juju-core@v0.0.0-20140504232958-a7271ac7912f/worker/charmrevisionworker/revisionupdater_test.go (about)

     1  // Copyright 2013 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package charmrevisionworker_test
     5  
     6  import (
     7  	stdtesting "testing"
     8  	"time"
     9  
    10  	gc "launchpad.net/gocheck"
    11  
    12  	"launchpad.net/juju-core/charm"
    13  	"launchpad.net/juju-core/state"
    14  	"launchpad.net/juju-core/state/api"
    15  	"launchpad.net/juju-core/state/apiserver/charmrevisionupdater/testing"
    16  	coretesting "launchpad.net/juju-core/testing"
    17  	jc "launchpad.net/juju-core/testing/checkers"
    18  	"launchpad.net/juju-core/utils"
    19  	"launchpad.net/juju-core/worker/charmrevisionworker"
    20  )
    21  
    22  func TestPackage(t *stdtesting.T) {
    23  	coretesting.MgoTestPackage(t)
    24  }
    25  
    26  type RevisionUpdateSuite struct {
    27  	testing.CharmSuite
    28  
    29  	st             *api.State
    30  	versionUpdater *charmrevisionworker.RevisionUpdateWorker
    31  }
    32  
    33  var _ = gc.Suite(&RevisionUpdateSuite{})
    34  
    35  func (s *RevisionUpdateSuite) SetUpSuite(c *gc.C) {
    36  	c.Assert(*charmrevisionworker.Interval, gc.Equals, 24*time.Hour)
    37  	s.CharmSuite.SetUpSuite(c)
    38  }
    39  
    40  func (s *RevisionUpdateSuite) SetUpTest(c *gc.C) {
    41  	s.CharmSuite.SetUpTest(c)
    42  
    43  	machine, err := s.State.AddMachine("quantal", state.JobManageEnviron)
    44  	c.Assert(err, gc.IsNil)
    45  	password, err := utils.RandomPassword()
    46  	c.Assert(err, gc.IsNil)
    47  	err = machine.SetPassword(password)
    48  	c.Assert(err, gc.IsNil)
    49  	err = machine.SetProvisioned("i-manager", "fake_nonce", nil)
    50  	c.Assert(err, gc.IsNil)
    51  	s.st = s.OpenAPIAsMachine(c, machine.Tag(), password, "fake_nonce")
    52  	c.Assert(s.st, gc.NotNil)
    53  }
    54  
    55  func (s *RevisionUpdateSuite) runUpdater(c *gc.C, updateInterval time.Duration) {
    56  	s.PatchValue(charmrevisionworker.Interval, updateInterval)
    57  	revisionUpdaterState := s.st.CharmRevisionUpdater()
    58  	c.Assert(revisionUpdaterState, gc.NotNil)
    59  
    60  	s.versionUpdater = charmrevisionworker.NewRevisionUpdateWorker(revisionUpdaterState)
    61  	s.AddCleanup(func(c *gc.C) { s.versionUpdater.Stop() })
    62  }
    63  
    64  func (s *RevisionUpdateSuite) checkCharmRevision(c *gc.C, expectedRev int) bool {
    65  	checkRevision := func() bool {
    66  		curl := charm.MustParseURL("cs:quantal/mysql")
    67  		placeholder, err := s.State.LatestPlaceholderCharm(curl)
    68  		return err == nil && placeholder.String() == curl.WithRevision(expectedRev).String()
    69  	}
    70  
    71  	success := false
    72  	for attempt := coretesting.LongAttempt.Start(); attempt.Next(); {
    73  		if success = checkRevision(); success {
    74  			break
    75  		}
    76  	}
    77  	return success
    78  }
    79  
    80  func (s *RevisionUpdateSuite) TestVersionUpdateRunsInitially(c *gc.C) {
    81  	s.SetupScenario(c)
    82  
    83  	// Run the updater with a long update interval to ensure only the initial
    84  	// update on startup is run.
    85  	s.runUpdater(c, time.Hour)
    86  	c.Assert(s.checkCharmRevision(c, 23), jc.IsTrue)
    87  }
    88  
    89  func (s *RevisionUpdateSuite) TestVersionUpdateRunsPeriodically(c *gc.C) {
    90  	s.SetupScenario(c)
    91  
    92  	// Start the updater and check the initial status.
    93  	s.runUpdater(c, 5*time.Millisecond)
    94  	c.Assert(s.checkCharmRevision(c, 23), jc.IsTrue)
    95  
    96  	// Make some changes
    97  	s.UpdateStoreRevision("cs:quantal/mysql", 24)
    98  	// Check the results of the latest changes.
    99  	c.Assert(s.checkCharmRevision(c, 24), jc.IsTrue)
   100  }