/*
 * Copyright 2020 Spotify AB
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import React from 'react';
import { AlertDisplay } from './AlertDisplay';
import {
  ApiProvider,
  ApiRegistry,
  alertApiRef,
  AlertApiForwarder,
} from '@backstage/core-api';
import Observable from 'zen-observable';
import { renderInTestApp } from '@backstage/test-utils';

const TEST_MESSAGE = 'TEST_MESSAGE';

describe('<AlertDisplay />', () => {
  it('renders without exploding', async () => {
    const apiRegistry = ApiRegistry.from([
      [alertApiRef, new AlertApiForwarder()],
    ]);

    const { queryByText } = await renderInTestApp(
      <ApiProvider apis={apiRegistry}>
        <AlertDisplay />
      </ApiProvider>,
    );
    expect(queryByText(TEST_MESSAGE)).not.toBeInTheDocument();
  });

  it('renders with message', async () => {
    const apiRegistry = ApiRegistry.from([
      [
        alertApiRef,
        {
          post() {},
          alert$() {
            return Observable.of({ message: TEST_MESSAGE });
          },
        },
      ],
    ]);

    const { queryByText } = await renderInTestApp(
      <ApiProvider apis={apiRegistry}>
        <AlertDisplay />
      </ApiProvider>,
    );

    expect(queryByText(TEST_MESSAGE)).toBeInTheDocument();
  });
});
