60 lines
2.2 KiB
Go
60 lines
2.2 KiB
Go
package state
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import "testing"
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func TestValidTransitions(t *testing.T) {
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m := NewMachine(ConversationSession{CallID: "c"})
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steps := []ConversationEvent{
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{Type: EventCallStarted},
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{Type: EventGreetingPlayed},
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{Type: EventLanguageSelected, Language: LanguageRU},
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{Type: EventRegionSelected, Region: RegionSelection{Code: "almaty_city", Status: RegionSelected}},
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{Type: EventQuestionReceived, Question: "q"},
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{Type: EventAnswerCompleted},
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{Type: EventHandoffRequested},
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{Type: EventCallEnded},
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}
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want := []ConversationState{StateGreeting, StateReadyToHelp, StateReadyToHelp, StateReadyToHelp, StateQuestionAnswering, StateReadyToHelp, StateHandoff, StateEnded}
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for i, step := range steps {
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res, err := m.Apply(step)
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if err != nil {
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t.Fatalf("step %d: %v", i, err)
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}
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if res.To != want[i] {
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t.Fatalf("step %d state=%s want=%s", i, res.To, want[i])
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}
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}
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if len(m.Session().TransitionHistory) != len(steps) {
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t.Fatalf("transition history length mismatch")
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}
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}
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func TestInvalidTransitionsDoNotMutate(t *testing.T) {
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m := NewMachine(ConversationSession{CallID: "c"})
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if _, err := m.Apply(ConversationEvent{Type: EventQuestionReceived}); err == nil {
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t.Fatal("expected invalid transition")
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}
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if m.CurrentState() != StateCallStarted {
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t.Fatalf("state mutated to %s", m.CurrentState())
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}
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_, _ = m.Apply(ConversationEvent{Type: EventCallEnded})
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if _, err := m.Apply(ConversationEvent{Type: EventLanguageSelected, Language: LanguageRU}); err == nil {
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t.Fatal("expected ended state error")
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}
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if m.CurrentState() != StateEnded {
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t.Fatalf("ended state mutated to %s", m.CurrentState())
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}
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}
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func TestQuestionAllowedWithoutExplicitLanguageAndRegion(t *testing.T) {
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m := NewMachine(ConversationSession{CallID: "c", State: StateRegionSelection, Language: LanguageRU})
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if _, err := m.Apply(ConversationEvent{Type: EventQuestionReceived}); err == nil {
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t.Fatal("region selection state should not answer directly")
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}
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m = NewMachine(ConversationSession{CallID: "c", State: StateReadyToHelp, Region: RegionSelection{Code: "almaty_city", Status: RegionSelected}})
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if _, err := m.Apply(ConversationEvent{Type: EventQuestionReceived}); err == nil {
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return
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}
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t.Fatal("question should be allowed without explicit language")
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}
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