github.com/ndau/noms@v1.0.5/go/merge/three_way_set_test.go (about)

     1  // Copyright 2016 Attic Labs, Inc. All rights reserved.
     2  // Licensed under the Apache License, version 2.0:
     3  // http://www.apache.org/licenses/LICENSE-2.0
     4  
     5  package merge
     6  
     7  import (
     8  	"testing"
     9  
    10  	"github.com/ndau/noms/go/types"
    11  	"github.com/stretchr/testify/suite"
    12  )
    13  
    14  func TestThreeWaySetMerge(t *testing.T) {
    15  	suite.Run(t, &ThreeWaySetMergeSuite{})
    16  }
    17  
    18  type items []interface{}
    19  
    20  func (kv items) items() []interface{} {
    21  	return kv
    22  }
    23  
    24  type ThreeWaySetMergeSuite struct {
    25  	ThreeWayMergeSuite
    26  }
    27  
    28  func (s *ThreeWaySetMergeSuite) SetupSuite() {
    29  	s.create = func(i seq) (val types.Value) {
    30  		if i != nil {
    31  			keyValues := valsToTypesValues(s.create, i.items()...)
    32  			val = types.NewSet(s.vs, keyValues...)
    33  		}
    34  		return
    35  	}
    36  	s.typeStr = "Set"
    37  }
    38  
    39  var (
    40  	flat  = items{"a1", "a2", "a3", "a4"}
    41  	flatA = items{"a1", "a2", "a5", "a6"}
    42  	flatB = items{"a1", "a4", "a7", "a5"}
    43  	flatM = items{"a1", "a5", "a6", "a7"}
    44  
    45  	ss1       = items{}
    46  	ss1a      = items{"k1", flatA, items{"a", 0}}
    47  	ss1b      = items{"k1", items{"a", 0}, flatB}
    48  	ss1Merged = items{"k1", items{"a", 0}, flatA, flatB}
    49  )
    50  
    51  func (s *ThreeWaySetMergeSuite) TestThreeWayMerge_DoNothing() {
    52  	s.tryThreeWayMerge(nil, nil, flat, flat)
    53  }
    54  
    55  func (s *ThreeWaySetMergeSuite) TestThreeWayMerge_Primitives() {
    56  	s.tryThreeWayMerge(flatA, flatB, flat, flatM)
    57  	s.tryThreeWayMerge(flatB, flatA, flat, flatM)
    58  }
    59  
    60  func (s *ThreeWaySetMergeSuite) TestThreeWayMerge_HandleEmpty() {
    61  	s.tryThreeWayMerge(ss1a, ss1b, ss1, ss1Merged)
    62  	s.tryThreeWayMerge(ss1b, ss1a, ss1, ss1Merged)
    63  }
    64  
    65  func (s *ThreeWaySetMergeSuite) TestThreeWayMerge_HandleNil() {
    66  	s.tryThreeWayMerge(ss1a, ss1b, nil, ss1Merged)
    67  	s.tryThreeWayMerge(ss1b, ss1a, nil, ss1Merged)
    68  }
    69  
    70  func (s *ThreeWaySetMergeSuite) TestThreeWayMerge_Refs() {
    71  	strRef := s.vs.WriteValue(types.NewStruct("Foo", types.StructData{"life": types.Number(42)}))
    72  
    73  	m := items{s.vs.WriteValue(s.create(flatA)), s.vs.WriteValue(s.create(flatB))}
    74  	ma := items{"r1", s.vs.WriteValue(s.create(flatA))}
    75  	mb := items{"r1", strRef, s.vs.WriteValue(s.create(flatA))}
    76  	mMerged := items{"r1", strRef, s.vs.WriteValue(s.create(flatA))}
    77  
    78  	s.tryThreeWayMerge(ma, mb, m, mMerged)
    79  	s.tryThreeWayMerge(mb, ma, m, mMerged)
    80  }
    81  
    82  func (s *ThreeWaySetMergeSuite) TestThreeWayMerge_ImmediateConflict() {
    83  	s.tryThreeWayConflict(types.NewMap(s.vs), s.create(ss1b), s.create(ss1), "Cannot merge Map<> with "+s.typeStr)
    84  	s.tryThreeWayConflict(s.create(ss1b), types.NewMap(s.vs), s.create(ss1), "Cannot merge "+s.typeStr)
    85  }