opentofu/internal/states/instance_object_test.go

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// Copyright (c) The OpenTofu Authors
// SPDX-License-Identifier: MPL-2.0
// Copyright (c) 2023 HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package states
import (
"sync"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/opentofu/opentofu/internal/addrs"
"github.com/zclconf/go-cty/cty"
)
func TestResourceInstanceObject_encode(t *testing.T) {
value := cty.ObjectVal(map[string]cty.Value{
"foo": cty.True,
})
// The in-memory order of resource dependencies is random, since they're an
// unordered set.
depsOne := []addrs.ConfigResource{
addrs.RootModule.Resource(addrs.ManagedResourceMode, "test", "honk"),
addrs.RootModule.Child("child").Resource(addrs.ManagedResourceMode, "test", "flub"),
addrs.RootModule.Resource(addrs.ManagedResourceMode, "test", "boop"),
}
depsTwo := []addrs.ConfigResource{
addrs.RootModule.Child("child").Resource(addrs.ManagedResourceMode, "test", "flub"),
addrs.RootModule.Resource(addrs.ManagedResourceMode, "test", "boop"),
addrs.RootModule.Resource(addrs.ManagedResourceMode, "test", "honk"),
}
// multiple instances may have been assigned the same deps slice
objs := []*ResourceInstanceObject{
&ResourceInstanceObject{
Value: value,
Status: ObjectPlanned,
Dependencies: depsOne,
},
&ResourceInstanceObject{
Value: value,
Status: ObjectPlanned,
Dependencies: depsTwo,
},
&ResourceInstanceObject{
Value: value,
Status: ObjectPlanned,
Dependencies: depsOne,
},
&ResourceInstanceObject{
Value: value,
Status: ObjectPlanned,
Dependencies: depsOne,
},
}
var encoded []*ResourceInstanceObjectSrc
// Encoding can happen concurrently, so we need to make sure the shared
// Dependencies are safely handled
var wg sync.WaitGroup
var mu sync.Mutex
for _, obj := range objs {
obj := obj
wg.Add(1)
go func() {
defer wg.Done()
rios, err := obj.Encode(value.Type(), 0)
if err != nil {
t.Errorf("unexpected error: %s", err)
}
mu.Lock()
encoded = append(encoded, rios)
mu.Unlock()
}()
}
wg.Wait()
// However, identical sets of dependencies should always be written to state
// in an identical order, so we don't do meaningless state updates on refresh.
for i := 0; i < len(encoded)-1; i++ {
if diff := cmp.Diff(encoded[i].Dependencies, encoded[i+1].Dependencies); diff != "" {
t.Errorf("identical dependencies got encoded in different orders:\n%s", diff)
}
}
}