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core: legacyDiffComparisonString don't panic if only deposed objects

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This shim for the benefit of our old tests was not handling the situation
where an InstanceState only contains deposed instances and no current
instance. This is a strange, rare situation but one that does come up in
practice in some odd cases.
This commit is contained in:
Martin Atkins 2018-09-20 15:15:44 -07:00
parent 334c6f1c2c
commit efe956524d
1 changed files with 17 additions and 15 deletions
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32
terraform/context_test.go
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@ -902,26 +902,28 @@ func legacyDiffComparisonString(changes *plans.Changes) string {
attrNames := map[string]bool{}
var oldAttrs map[string]string
var newAttrs map[string]string
if before := rc.Current.Before; before != nil {
ty, err := before.ImpliedType()
if err == nil {
val, err := before.Decode(ty)
if rc.Current != nil {
if before := rc.Current.Before; before != nil {
ty, err := before.ImpliedType()
if err == nil {
oldAttrs = hcl2shim.FlatmapValueFromHCL2(val)
for k := range oldAttrs {
attrNames[k] = true
val, err := before.Decode(ty)
if err == nil {
oldAttrs = hcl2shim.FlatmapValueFromHCL2(val)
for k := range oldAttrs {
attrNames[k] = true
}
}
}
}
}
if after := rc.Current.After; after != nil {
ty, err := after.ImpliedType()
if err == nil {
val, err := after.Decode(ty)
if after := rc.Current.After; after != nil {
ty, err := after.ImpliedType()
if err == nil {
newAttrs = hcl2shim.FlatmapValueFromHCL2(val)
for k := range newAttrs {
attrNames[k] = true
val, err := after.Decode(ty)
if err == nil {
newAttrs = hcl2shim.FlatmapValueFromHCL2(val)
for k := range newAttrs {
attrNames[k] = true
}
}
}
}