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core: MockProvider shim handling of DiffFn 

This should allow many of our existing tests using DiffFn to continue
working with little or no further modification.
This commit is contained in:
Martin Atkins 2018-09-06 16:49:21 -07:00
parent 76d11f44cc
commit 84102170b3
1 changed files with 42 additions and 4 deletions
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44
terraform/provider_mock.go
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@ -5,10 +5,11 @@ import (
"fmt"
"sync"
"github.com/hashicorp/terraform/config/hcl2shim"
"github.com/hashicorp/terraform/tfdiags"
"github.com/zclconf/go-cty/cty"
"github.com/hashicorp/terraform/config/hcl2shim"
"github.com/hashicorp/terraform/providers"
"github.com/hashicorp/terraform/tfdiags"
)
var _ providers.Interface = (*MockProvider)(nil)
@ -231,10 +232,47 @@ func (p *MockProvider) PlanResourceChange(r providers.PlanResourceChangeRequest)
p.PlanResourceChangeRequest = r
if p.DiffFn != nil {
ps := p.GetSchema()
if ps.ResourceTypes == nil || ps.ResourceTypes[r.TypeName].Block == nil {
return providers.PlanResourceChangeResponse{
Diagnostics: tfdiags.Diagnostics(nil).Append(fmt.Errorf("legacy DiffFn handling in MockProvider not actually implemented yet")),
Diagnostics: tfdiags.Diagnostics(nil).Append(fmt.Printf("mock provider has no schema for resource type %s", r.TypeName)),
}
}
schema := ps.ResourceTypes[r.TypeName].Block
info := &InstanceInfo{
Type: r.TypeName,
}
priorState := NewInstanceStateShimmedFromValue(r.PriorState, 0)
cfg := NewResourceConfigShimmed(r.Config, schema)
legacyDiff, err := p.DiffFn(info, priorState, cfg)
var res providers.PlanResourceChangeResponse
res.PlannedState = cty.NullVal(schema.ImpliedType()) // mimic how an absent value would arrive over the GRPC channel
if err != nil {
res.Diagnostics = res.Diagnostics.Append(err)
}
if legacyDiff != nil {
newVal, err := legacyDiff.ApplyToValue(r.PriorState, schema)
if err != nil {
res.Diagnostics = res.Diagnostics.Append(err)
}
res.PlannedState = newVal
var requiresNew []string
for attr, d := range legacyDiff.Attributes {
if d.RequiresNew {
requiresNew = append(requiresNew, attr)
}
}
requiresReplace, err := hcl2shim.RequiresReplace(requiresNew, schema.ImpliedType())
if err != nil {
res.Diagnostics = res.Diagnostics.Append(err)
}
res.RequiresReplace = requiresReplace
}
return res
}
if p.PlanResourceChangeFn != nil {
return p.PlanResourceChangeFn(r)
}