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176ae6e95f
We already catch indirect cycles through the normal cycle detector, but we never create self-edges in the graph so we need to handle a direct self-reference separately here. The prior behavior was simply to produce an incorrect result (since the local value wasn't assigned a new value yet). This fixes #18503.
87 lines
1.7 KiB
Go
87 lines
1.7 KiB
Go
package terraform
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import (
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"reflect"
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"testing"
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"github.com/davecgh/go-spew/spew"
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"github.com/hashicorp/hcl2/hcl"
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"github.com/hashicorp/hcl2/hcl/hclsyntax"
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"github.com/zclconf/go-cty/cty"
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/config/hcl2shim"
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"github.com/hashicorp/terraform/states"
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)
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func TestEvalLocal_impl(t *testing.T) {
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var _ EvalNode = new(EvalLocal)
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}
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func TestEvalLocal(t *testing.T) {
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tests := []struct {
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Value string
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Want interface{}
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Err bool
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}{
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{
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"hello!",
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"hello!",
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false,
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},
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{
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"",
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"",
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false,
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},
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{
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"Hello, ${local.foo}",
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nil,
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true, // self-referencing
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},
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}
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for _, test := range tests {
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t.Run(test.Value, func(t *testing.T) {
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expr, diags := hclsyntax.ParseTemplate([]byte(test.Value), "", hcl.Pos{Line: 1, Column: 1})
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if diags.HasErrors() {
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t.Fatal(diags.Error())
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}
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n := &EvalLocal{
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Addr: addrs.LocalValue{Name: "foo"},
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Expr: expr,
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}
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ctx := &MockEvalContext{
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StateState: states.NewState().SyncWrapper(),
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EvaluateExprResult: hcl2shim.HCL2ValueFromConfigValue(test.Want),
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}
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_, err := n.Eval(ctx)
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if (err != nil) != test.Err {
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if err != nil {
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t.Errorf("unexpected error: %s", err)
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} else {
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t.Errorf("successful Eval; want error")
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}
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}
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ms := ctx.StateState.Module(addrs.RootModuleInstance)
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gotLocals := ms.LocalValues
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wantLocals := map[string]cty.Value{}
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if test.Want != nil {
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wantLocals["foo"] = hcl2shim.HCL2ValueFromConfigValue(test.Want)
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}
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if !reflect.DeepEqual(gotLocals, wantLocals) {
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t.Errorf(
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"wrong locals after Eval\ngot: %swant: %s",
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spew.Sdump(gotLocals), spew.Sdump(wantLocals),
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)
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}
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})
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}
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}
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