95 lines
2.1 KiB
Go
95 lines
2.1 KiB
Go
package state
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import (
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"bytes"
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"reflect"
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"testing"
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"github.com/hashicorp/terraform/terraform"
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)
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// TestState is a helper for testing state implementations. It is expected
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// that the given implementation is pre-loaded with the TestStateInitial
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// state.
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func TestState(t *testing.T, s interface{}) {
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reader, ok := s.(StateReader)
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if !ok {
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t.Fatalf("must at least be a StateReader")
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}
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// If it implements refresh, refresh
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if rs, ok := s.(StateRefresher); ok {
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if err := rs.RefreshState(); err != nil {
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t.Fatalf("err: %s", err)
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}
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}
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// current will track our current state
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current := TestStateInitial()
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// Check that the initial state is correct
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state := reader.State()
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current.Serial = state.Serial
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if !reflect.DeepEqual(state, current) {
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t.Fatalf("not initial: %#v\n\n%#v", state, current)
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}
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// Write a new state and verify that we have it
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if ws, ok := s.(StateWriter); ok {
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current.Modules = append(current.Modules, &terraform.ModuleState{
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Path: []string{"root"},
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Outputs: map[string]string{
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"bar": "baz",
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},
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})
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if err := ws.WriteState(current); err != nil {
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t.Fatalf("err: %s", err)
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}
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if actual := reader.State(); !reflect.DeepEqual(actual, current) {
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t.Fatalf("bad: %#v\n\n%#v", actual, current)
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}
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}
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// Test persistence
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if ps, ok := s.(StatePersister); ok {
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if err := ps.PersistState(); err != nil {
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t.Fatalf("err: %s", err)
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}
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// Refresh if we got it
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if rs, ok := s.(StateRefresher); ok {
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if err := rs.RefreshState(); err != nil {
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t.Fatalf("err: %s", err)
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}
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}
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// Just set the serials the same... Then compare.
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actual := reader.State()
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actual.Serial = current.Serial
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if !reflect.DeepEqual(actual, current) {
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t.Fatalf("bad: %#v\n\n%#v", actual, current)
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}
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}
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}
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// TestStateInitial is the initial state that a State should have
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// for TestState.
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func TestStateInitial() *terraform.State {
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initial := &terraform.State{
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Modules: []*terraform.ModuleState{
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&terraform.ModuleState{
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Path: []string{"root", "child"},
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Outputs: map[string]string{
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"foo": "bar",
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},
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},
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},
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}
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var scratch bytes.Buffer
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terraform.WriteState(initial, &scratch)
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return initial
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}
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