package merrors

import (
	"errors"
	"testing"
)

func TestChainExecutionPreconditionCarriesClassAndReason(t *testing.T) {
	err := ChainExecutionPrecondition(ReasonChainExecutionInsufficientBalance, "source balance is insufficient")
	if !errors.Is(err, ErrFailedPrecondition) {
		t.Fatal("expected failed-precondition classification")
	}
	reason, ok := Reason(err)
	if !ok || reason != ReasonChainExecutionInsufficientBalance {
		t.Fatalf("unexpected reason: %q", reason)
	}
}