blob: 991e8c0bb682dc4b258f327ea2b846d3a49f01ab [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';
void main() {
TextEditingValue testOldValue;
TextEditingValue testNewValue;
test('withFunction wraps formatting function', () {
testOldValue = const TextEditingValue();
testNewValue = const TextEditingValue();
TextEditingValue calledOldValue;
TextEditingValue calledNewValue;
final TextInputFormatter formatterUnderTest = TextInputFormatter.withFunction(
(TextEditingValue oldValue, TextEditingValue newValue) {
calledOldValue = oldValue;
calledNewValue = newValue;
}
);
formatterUnderTest.formatEditUpdate(testOldValue, testNewValue);
expect(calledOldValue, equals(testOldValue));
expect(calledNewValue, equals(testNewValue));
});
group('test provided formatters', () {
setUp(() {
// a1b(2c3
// d4)e5f6
// where the parentheses are the selection range.
testNewValue = const TextEditingValue(
text: 'a1b2c3\nd4e5f6',
selection: const TextSelection(
baseOffset: 3,
extentOffset: 9,
),
);
});
test('test blacklisting formatter', () {
final TextEditingValue actualValue =
new BlacklistingTextInputFormatter(new RegExp(r'[a-z]'))
.formatEditUpdate(testOldValue, testNewValue);
// Expecting
// 1(23
// 4)56
expect(actualValue, const TextEditingValue(
text: '123\n456',
selection: const TextSelection(
baseOffset: 1,
extentOffset: 5,
),
));
});
test('test single line formatter', () {
final TextEditingValue actualValue =
BlacklistingTextInputFormatter.singleLineFormatter
.formatEditUpdate(testOldValue, testNewValue);
// Expecting
// a1b(2c3d4)e5f6
expect(actualValue, const TextEditingValue(
text: 'a1b2c3d4e5f6',
selection: const TextSelection(
baseOffset: 3,
extentOffset: 8,
),
));
});
test('test whitelisting formatter', () {
final TextEditingValue actualValue =
new WhitelistingTextInputFormatter(new RegExp(r'[a-c]'))
.formatEditUpdate(testOldValue, testNewValue);
// Expecting
// ab(c)
expect(actualValue, const TextEditingValue(
text: 'abc',
selection: const TextSelection(
baseOffset: 2,
extentOffset: 3,
),
));
});
test('test digits only formatter', () {
final TextEditingValue actualValue =
WhitelistingTextInputFormatter.digitsOnly
.formatEditUpdate(testOldValue, testNewValue);
// Expecting
// 1(234)56
expect(actualValue, const TextEditingValue(
text: '123456',
selection: const TextSelection(
baseOffset: 1,
extentOffset: 4,
),
));
});
test('test length limiting formatter', () {
final TextEditingValue actualValue =
new LengthLimitingTextInputFormatter(6)
.formatEditUpdate(testOldValue, testNewValue);
// Expecting
// a1b(2c3)
expect(actualValue, const TextEditingValue(
text: 'a1b2c3',
selection: const TextSelection(
baseOffset: 3,
extentOffset: 6,
),
));
});
test('test length limiting formatter with zero-length string', () {
testNewValue = const TextEditingValue(
text: '',
selection: const TextSelection(
baseOffset: 0,
extentOffset: 0,
),
);
final TextEditingValue actualValue =
new LengthLimitingTextInputFormatter(1)
.formatEditUpdate(testOldValue, testNewValue);
// Expecting the empty string.
expect(actualValue, const TextEditingValue(
text: '',
selection: const TextSelection(
baseOffset: 0,
extentOffset: 0,
),
));
});
test('test length limiting formatter with non-BMP Unicode scalar values', () {
testNewValue = const TextEditingValue(
text: '\u{1f984}\u{1f984}\u{1f984}\u{1f984}', // Unicode U+1f984 (UNICORN FACE)
selection: const TextSelection(
baseOffset: 4,
extentOffset: 4,
),
);
final TextEditingValue actualValue =
new LengthLimitingTextInputFormatter(2)
.formatEditUpdate(testOldValue, testNewValue);
// Expecting two runes.
expect(actualValue, const TextEditingValue(
text: '\u{1f984}\u{1f984}',
selection: const TextSelection(
baseOffset: 2,
extentOffset: 2,
),
));
});
test('test length limiting formatter with complex Unicode characters', () {
// TODO(gspencer): Test additional strings. We can do this once the
// formatter supports Unicode grapheme clusters.
//
// A formatter with max length 1 should accept:
// - The '\u{1F3F3}\u{FE0F}\u{200D}\u{1F308}' sequence (flag followed by
// a variation selector, a zero-width joiner, and a rainbow to make a rainbow
// flag).
// - The sequence '\u{0058}\u{0346}\u{0361}\u{035E}\u{032A}\u{031C}\u{0333}\u{0326}\u{031D}\u{0332}'
// (Latin X with many composed characters).
//
// A formatter should not count as a character:
// * The '\u{0000}\u{FEFF}' sequence. (NULL followed by zero-width no-break space).
//
// A formatter with max length 1 should truncate this to one character:
// * The '\u{1F3F3}\u{FE0F}\u{1F308}' sequence (flag with ignored variation
// selector followed by rainbow, should truncate to just flag).
// The U+1F984 U+0020 sequence: Unicorn face followed by a space should
// yield only the unicorn face.
testNewValue = const TextEditingValue(
text: '\u{1F984}\u{0020}',
selection: const TextSelection(
baseOffset: 1,
extentOffset: 1,
),
);
TextEditingValue actualValue = new LengthLimitingTextInputFormatter(1).formatEditUpdate(testOldValue, testNewValue);
expect(actualValue, const TextEditingValue(
text: '\u{1F984}',
selection: const TextSelection(
baseOffset: 1,
extentOffset: 1,
),
));
// The U+0058 U+0059 sequence: Latin X followed by Latin Y, should yield
// Latin X.
testNewValue = const TextEditingValue(
text: '\u{0058}\u{0059}',
selection: const TextSelection(
baseOffset: 1,
extentOffset: 1,
),
);
actualValue = new LengthLimitingTextInputFormatter(1).formatEditUpdate(testOldValue, testNewValue);
expect(actualValue, const TextEditingValue(
text: '\u{0058}',
selection: const TextSelection(
baseOffset: 1,
extentOffset: 1,
),
));
});
test('test length limiting formatter when selection is off the end', () {
final TextEditingValue actualValue =
new LengthLimitingTextInputFormatter(2)
.formatEditUpdate(testOldValue, testNewValue);
// Expecting
// a1()
expect(actualValue, const TextEditingValue(
text: 'a1',
selection: const TextSelection(
baseOffset: 2,
extentOffset: 2,
),
));
});
});
}