printing_test.dart
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/*
* Copyright (C) 2017, David PHAM-VAN <dev.nfet.net@gmail.com>
*
* 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 'dart:typed_data';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:mockito/mockito.dart';
import 'package:pdf/pdf.dart';
import 'package:plugin_platform_interface/plugin_platform_interface.dart';
import 'package:printing/printing.dart';
import 'package:printing/src/interface.dart';
void main() {
setUp(() {
TestWidgetsFlutterBinding.ensureInitialized();
final mock = MockPrinting();
PrintingPlatform.instance = mock;
});
test('info', () async {
final info = await Printing.info();
expect(info, isInstanceOf<PrintingInfo>());
});
test('layoutPdf', () async {
expect(
await Printing.layoutPdf(
onLayout: (_) => Uint8List(0),
name: 'doc',
format: PdfPageFormat.letter,
),
true);
});
test('sharePdf', () async {
expect(
await Printing.sharePdf(
bytes: Uint8List(0),
),
true,
);
});
test('pickPrinter', () async {
expect(
await Printing.pickPrinter(context: MockContext()),
null,
);
});
test('directPrintPdf', () async {
expect(
await Printing.directPrintPdf(
onLayout: (_) => Uint8List(0),
printer: const Printer(url: 'test'),
),
true,
);
});
test('convertHtml', () async {
expect(
await Printing.convertHtml(html: '<html></html>'),
isInstanceOf<Uint8List>(),
);
});
test('raster', () async {
expect(
Printing.raster(Uint8List(0)),
isInstanceOf<Stream>(),
);
});
test('test image', () async {
final bytes = Uint8List.fromList([
137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 1, //
0, 0, 0, 1, 0, 1, 3, 0, 0, 0, 102, 188, 58, 37, 0, 0, 0, 3, 80, 76, 84,
69, 181, 208, 208, 99, 4, 22, 234, 0, 0, 0, 31, 73, 68, 65, 84, 104,
129, 237, 193, 1, 13, 0, 0, 0, 194, 160, 247, 79, 109, 14, 55, 160, 0, 0,
0, 0, 0, 0, 0, 0, 190, 13, 33, 0, 0, 1, 154, 96, 225, 213, 0, 0, 0, 0, 73,
69, 78, 68, 174, 66, 96, 130
]);
final imageProvider = Image.memory(bytes).image;
expect(await flutterImageProvider(imageProvider), isNotNull);
});
}
class MockPrinting extends Mock
with MockPlatformInterfaceMixin
implements PrintingPlatform {
@override
Future<PrintingInfo> info() async => const PrintingInfo();
@override
Future<bool> layoutPdf(
Printer? printer,
LayoutCallback onLayout,
String name,
PdfPageFormat format,
bool dynamicLayout,
bool usePrinterSettings,
) async =>
true;
@override
Future<bool> sharePdf(Uint8List bytes, String filename, Rect bounds,
String? subject, String? body, List<String>? emails) async =>
true;
@override
Future<Printer?> pickPrinter(Rect bounds) async => null;
@override
Stream<PdfRaster> raster(
Uint8List document, List<int>? pages, double dpi) async* {}
@override
Future<Uint8List> convertHtml(
String html, String? baseUrl, PdfPageFormat format) async =>
Uint8List(0);
}
class MockContext extends Mock implements BuildContext {}