github.com/wallyworld/juju@v0.0.0-20161013125918-6cf1bc9d917a/core/migration/phase_internal_test.go (about)

     1  // Copyright 2016 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package migration
     5  
     6  import (
     7  	"github.com/juju/utils/set"
     8  	gc "gopkg.in/check.v1"
     9  
    10  	coretesting "github.com/juju/juju/testing"
    11  )
    12  
    13  type PhaseInternalSuite struct {
    14  	coretesting.BaseSuite
    15  }
    16  
    17  var _ = gc.Suite(new(PhaseInternalSuite))
    18  
    19  func (s *PhaseInternalSuite) TestForUnused(c *gc.C) {
    20  	usedPhases := set.NewStrings()
    21  	for source, targets := range validTransitions {
    22  		usedPhases.Add(source.String())
    23  		for _, target := range targets {
    24  			usedPhases.Add(target.String())
    25  		}
    26  	}
    27  
    28  	specialPhases := set.NewStrings(
    29  		UNKNOWN.String(),
    30  		NONE.String(),
    31  	)
    32  	allValidPhases := set.NewStrings(phaseNames...).Difference(specialPhases)
    33  	c.Check(allValidPhases.Difference(usedPhases), gc.HasLen, 0)
    34  
    35  	// The special phases shouldn't appear in the transition map.
    36  	c.Check(usedPhases.Intersection(specialPhases), gc.HasLen, 0)
    37  }
    38  
    39  func (s *PhaseInternalSuite) TestForUnreachable(c *gc.C) {
    40  	const initialPhase = QUIESCE
    41  	allSources := set.NewStrings()
    42  	allTargets := set.NewStrings()
    43  	for source, targets := range validTransitions {
    44  		if source != initialPhase {
    45  			allSources.Add(source.String())
    46  		}
    47  		for _, target := range targets {
    48  			allTargets.Add(target.String())
    49  		}
    50  	}
    51  
    52  	// Each source must be referred to at least once.
    53  	c.Check(allSources.Difference(allTargets), gc.HasLen, 0)
    54  }