package client

import (
	"encoding/json"
	"testing"
)

func TestJobPayloadDetectsServerError(t *testing.T) {
	raw := json.RawMessage(`{"error":"pool not connected"}`)
	if !jobPayloadHasError(raw) {
		t.Fatal("expected error detection")
	}
	msg, ok := jobPayloadErrorMessage(raw)
	if !ok || msg != "pool not connected" {
		t.Fatalf("unexpected message: %q ok=%v", msg, ok)
	}
}

func TestJobPayloadNoErrorOnValidJob(t *testing.T) {
	raw := json.RawMessage(`{"job_id":"abc","blob":"deadbeef","height":1}`)
	if jobPayloadHasError(raw) {
		t.Fatal("valid job should not report error")
	}
}

func TestJobPayloadEmptyBlobNotErrorField(t *testing.T) {
	raw := json.RawMessage(`{"job_id":"abc","blob":""}`)
	if jobPayloadHasError(raw) {
		t.Fatal("empty blob is not an error field")
	}
}