package worker

import (
	"errors"
	"testing"
)

func TestClassifyLLMError(t *testing.T) {
	tests := []struct {
		name string
		err  error
		want string
	}{
		{name: "timeout", err: errors.New("context deadline exceeded"), want: "timeout"},
		{name: "unavailable", err: errors.New("llm HTTP 500: internal server error"), want: "model_unavailable"},
		{name: "context length", err: errors.New("This model's maximum context length is 16384 tokens. input_tokens=16001"), want: "context_length"},
		{name: "bad input", err: errors.New("llm HTTP 400: messages are required"), want: "bad_input"},
		{name: "bad response", err: errors.New("llm decode: invalid character '<'"), want: "bad_response"},
		{name: "unknown", err: errors.New("strange failure"), want: "unknown"},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := classifyLLMError(tt.err); got != tt.want {
				t.Fatalf("classifyLLMError() = %q, want %q", got, tt.want)
			}
		})
	}
}