apidash/test/widgets/button_save_download_test.dart

import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:apidash/consts.dart';
import 'package:apidash/widgets/button_save_download.dart';

import '../test_consts.dart';

void main() {
  testWidgets('Testing for Save in Downloads button', (tester) async {
    await tester.pumpWidget(
      MaterialApp(
        title: 'Save in Downloads button',
        theme: kThemeDataLight,
        home: const Scaffold(
          body: SaveInDownloadsButton(),
        ),
      ),
    );

    final icon = find.byIcon(Icons.download);
    expect(icon, findsOneWidget);

    Finder button;
    if (tester.any(find.ancestor(
        of: icon,
        matching: find.byWidgetPredicate((widget) => widget is TextButton)))) {
      expect(find.text(kLabelDownload), findsOneWidget);
      button = find.ancestor(
          of: icon,
          matching: find.byWidgetPredicate((widget) => widget is TextButton));
      expect(button, findsOneWidget);
      expect(tester.widget<TextButton>(button).enabled, isFalse);
    } else if (tester
        .any(find.ancestor(of: icon, matching: find.byType(IconButton)))) {
      button = find.byType(IconButton);
      expect(button, findsOneWidget);
      expect(tester.widget<IconButton>(button).onPressed == null, isFalse);
    } else {
      fail('No TextButton or IconButton found');
    }
  });

  testWidgets('Testing for Save in Downloads button 2', (tester) async {
    await tester.pumpWidget(
      MaterialApp(
        title: 'Save in Downloads button',
        theme: kThemeDataLight,
        home: Scaffold(
          body: SaveInDownloadsButton(
            content: Uint8List.fromList([1]),
          ),
        ),
      ),
    );

    final icon = find.byIcon(Icons.download);
    expect(icon, findsOneWidget);

    Finder button;
    if (tester.any(find.ancestor(
        of: icon,
        matching: find.byWidgetPredicate((widget) => widget is TextButton)))) {
      expect(find.text(kLabelDownload), findsOneWidget);
      button = find.ancestor(
          of: icon,
          matching: find.byWidgetPredicate((widget) => widget is TextButton));
      expect(button, findsOneWidget);
      expect(tester.widget<TextButton>(button).enabled, isTrue);
    } else if (tester
        .any(find.ancestor(of: icon, matching: find.byType(IconButton)))) {
      button = find.byType(IconButton);
      expect(button, findsOneWidget);
      expect(tester.widget<IconButton>(button).onPressed == null, isTrue);
    } else {
      fail('No TextButton or IconButton found');
    }
  });
}