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plans/objchange: Fix handling of unknown in AssertValueCompatible 

We need to check for the known-ness of the prior value before we check for
the null-ness of actual, because it's valid for an unknown value to become
a null.
This commit is contained in:
Martin Atkins 2018-09-28 15:22:57 -07:00
parent 896b6bc897
commit 32974549cd
1 changed files with 6 additions and 5 deletions
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11
plans/objchange/compatible.go
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@ -176,6 +176,12 @@ func assertValueCompatible(planned, actual cty.Value, path cty.Path) []error {
return errs
}
if !planned.IsKnown() {
// We didn't know what were going to end up with during plan, so
// anything goes during apply.
return errs
}
if actual.IsNull() {
if planned.IsNull() {
return nil
@ -189,11 +195,6 @@ func assertValueCompatible(planned, actual cty.Value, path cty.Path) []error {
ty := planned.Type()
switch {
case ty == cty.DynamicPseudoType || !planned.IsKnown():
// We didn't know what were going to end up with during plan, so
// anything goes during apply.
return errs
case !actual.IsKnown():
errs = append(errs, path.NewErrorf("was known, but now unknown"))