package threadsapi

import (
	"strings"
	"testing"
)

func TestParseAPIErrorIncludesUserMessageAndCodes(t *testing.T) {
	body := []byte(`{"error":{"message":"An unknown error occurred","type":"OAuthException","code":1,"error_subcode":99,"error_user_msg":"圖片無法下載","fbtrace_id":"abc123"}}`)
	err := parseAPIError(body, 400)
	got := err.Error()
	if got == "" {
		t.Fatal("expected error")
	}
	for _, want := range []string{"400", "圖片無法下載", "code=1", "subcode=99", "fbtrace_id=abc123"} {
		if !strings.Contains(got, want) {
			t.Fatalf("parseAPIError() = %q, want fragment %q", got, want)
		}
	}
}