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dcfd35f8a7
Most of these imports were never appropriate. The `test_api` package was never intended for use in `_test.dart` files. Where possible move imports to `matcher`, otherwise move them to `test` or `flutter_test`. Leave uses of `test_api` from `flutter_test` library code.
90 lines
3.7 KiB
Dart
90 lines
3.7 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_gallery/demo/calculator/logic.dart';
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import 'package:test/test.dart' hide TypeMatcher, isInstanceOf;
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void main() {
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test('Test order of operations: 12 + 3 * 4 = 24', () {
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CalcExpression expression = CalcExpression.empty();
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expression = expression.appendDigit(1)!;
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expression = expression.appendDigit(2)!;
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expression = expression.appendOperation(Operation.Addition)!;
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expression = expression.appendDigit(3)!;
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expression = expression.appendOperation(Operation.Multiplication)!;
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expression = expression.appendDigit(4)!;
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expression = expression.computeResult()!;
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expect(expression.state, equals(ExpressionState.Result));
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expect(expression.toString(), equals('24'));
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});
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test('Test floating point 0.1 + 0.2 = 0.3', () {
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CalcExpression expression = CalcExpression.empty();
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expression = expression.appendDigit(0)!;
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expression = expression.appendPoint()!;
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expression = expression.appendDigit(1)!;
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expression = expression.appendOperation(Operation.Addition)!;
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expression = expression.appendDigit(0)!;
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expression = expression.appendPoint()!;
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expression = expression.appendDigit(2)!;
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expression = expression.computeResult()!;
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expect(expression.state, equals(ExpressionState.Result));
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expect(expression.toString(), equals('0.3'));
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});
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test('Test floating point 1.0/10.0 = 0.1', () {
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CalcExpression expression = CalcExpression.empty();
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expression = expression.appendDigit(1)!;
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expression = expression.appendPoint()!;
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expression = expression.appendDigit(0)!;
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expression = expression.appendOperation(Operation.Division)!;
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expression = expression.appendDigit(1)!;
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expression = expression.appendDigit(0)!;
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expression = expression.appendPoint()!;
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expression = expression.appendDigit(0)!;
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expression = expression.computeResult()!;
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expect(expression.state, equals(ExpressionState.Result));
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expect(expression.toString(), equals('0.1'));
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});
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test('Test 1/0 = Infinity', () {
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CalcExpression expression = CalcExpression.empty();
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expression = expression.appendDigit(1)!;
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expression = expression.appendOperation(Operation.Division)!;
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expression = expression.appendDigit(0)!;
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expression = expression.computeResult()!;
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expect(expression.state, equals(ExpressionState.Result));
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expect(expression.toString(), equals('Infinity'));
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});
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test('Test use result in next calculation: 1 + 1 = 2 + 1 = 3 + 1 = 4', () {
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CalcExpression expression = CalcExpression.empty();
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expression = expression.appendDigit(1)!;
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expression = expression.appendOperation(Operation.Addition)!;
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expression = expression.appendDigit(1)!;
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expression = expression.computeResult()!;
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expression = expression.appendOperation(Operation.Addition)!;
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expression = expression.appendDigit(1)!;
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expression = expression.computeResult()!;
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expression = expression.appendOperation(Operation.Addition)!;
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expression = expression.appendDigit(1)!;
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expression = expression.computeResult()!;
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expect(expression.state, equals(ExpressionState.Result));
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expect(expression.toString(), equals('4'));
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});
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test('Test minus -3 - -2 = -1', () {
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CalcExpression expression = CalcExpression.empty();
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expression = expression.appendMinus()!;
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expression = expression.appendDigit(3)!;
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expression = expression.appendMinus()!;
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expression = expression.appendMinus()!;
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expression = expression.appendDigit(2)!;
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expression = expression.computeResult()!;
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expect(expression.state, equals(ExpressionState.Result));
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expect(expression.toString(), equals('-1'));
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});
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}
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