packages/webview_flutter/webview_flutter_android/android/src/test/java/io/flutter/plugins/webviewflutter/WebViewFlutterPluginTest.java

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package io.flutter.plugins.webviewflutter;

import static org.junit.Assert.assertNotNull;
import static org.mockito.Mockito.when;

import android.content.Context;
import io.flutter.embedding.engine.plugins.FlutterPlugin;
import io.flutter.plugin.common.BinaryMessenger;
import io.flutter.plugin.platform.PlatformViewRegistry;
import org.junit.Rule;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;

public class WebViewFlutterPluginTest {
  @Rule public MockitoRule mockitoRule = MockitoJUnit.rule();

  @Mock Context mockContext;

  @Mock BinaryMessenger mockBinaryMessenger;

  @Mock PlatformViewRegistry mockViewRegistry;

  @Mock FlutterPlugin.FlutterPluginBinding mockPluginBinding;

  @Test
  public void getInstanceManagerAfterOnAttachedToEngine() {
    final WebViewFlutterPlugin webViewFlutterPlugin = new WebViewFlutterPlugin();

    when(mockPluginBinding.getApplicationContext()).thenReturn(mockContext);
    when(mockPluginBinding.getPlatformViewRegistry()).thenReturn(mockViewRegistry);
    when(mockPluginBinding.getBinaryMessenger()).thenReturn(mockBinaryMessenger);

    webViewFlutterPlugin.onAttachedToEngine(mockPluginBinding);

    assertNotNull(webViewFlutterPlugin.getInstanceManager());

    webViewFlutterPlugin.onDetachedFromEngine(mockPluginBinding);
  }
}