package exec

import (
	"errors"
	"strings"
	"testing"
	"time"
)

func TestAssessStepFailureBudgetExceededIsPermanent(t *testing.T) {
	ass := AssessStepFailure(StepFailureSignals{
		Err: errors.New("budget_exceeded: tool calls 12 > max 10"),
	})
	if ass.Class != FailurePermanent {
		t.Fatalf("budget exhaustion must classify permanent (no auto retry), got %s", ass.Class)
	}
	if !strings.Contains(ass.Reason, "permanent") {
		t.Fatalf("want permanent reason, got %s", ass.Reason)
	}
}

func TestAssessStepFailureDeadlinePastIsPermanent(t *testing.T) {
	ass := AssessStepFailure(StepFailureSignals{
		Result: &Result{ErrorReason: "budget_exceeded: deadline 2026-10-01T00:00:00Z passed"},
	})
	if ass.Class != FailurePermanent {
		t.Fatalf("deadline exhaustion must classify permanent, got %s", ass.Class)
	}
}

func TestBudgetZeroValueUnlimited(t *testing.T) {
	var b Budget
	if b.MaxPromptTokens != 0 || b.MaxCompletionTokens != 0 || b.MaxToolCalls != 0 || !b.Deadline.IsZero() {
		t.Fatal("zero budget must express unlimited")
	}
	_ = time.Now
}