1<?php
2
3/**
4 * Hoa
5 *
6 *
7 * @license
8 *
9 * New BSD License
10 *
11 * Copyright © 2007-2017, Hoa community. All rights reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions are met:
15 *     * Redistributions of source code must retain the above copyright
16 *       notice, this list of conditions and the following disclaimer.
17 *     * Redistributions in binary form must reproduce the above copyright
18 *       notice, this list of conditions and the following disclaimer in the
19 *       documentation and/or other materials provided with the distribution.
20 *     * Neither the name of the Hoa nor the names of its contributors may be
21 *       used to endorse or promote products derived from this software without
22 *       specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37namespace Hoa\Iterator\Test\Unit;
38
39use Hoa\Iterator as LUT;
40use Hoa\Test;
41
42/**
43 * Class \Hoa\Iterator\Test\Unit\Lookbehind.
44 *
45 * Test suite of the look behind iterator.
46 *
47 * @copyright  Copyright © 2007-2017 Hoa community
48 * @license    New BSD License
49 */
50class Lookbehind extends Test\Unit\Suite
51{
52    public function case_traverse()
53    {
54        $this
55            ->given(
56                $iterator   = new LUT\Map(['a', 'b', 'c']),
57                $lookbehind = new LUT\Lookbehind($iterator)
58            )
59            ->when($result = iterator_to_array($iterator))
60            ->then
61                ->array($result)
62                    ->isEqualTo(['a', 'b', 'c']);
63    }
64
65    public function case_check_behind()
66    {
67        $this
68            ->given(
69                $iterator   = new LUT\Map(['a', 'b', 'c']),
70                $lookbehind = new LUT\Lookbehind($iterator)
71            )
72            ->when(
73                $lookbehind->rewind(),
74                $key         = $lookbehind->key(),
75                $current     = $lookbehind->current(),
76                $hasPrevious = $lookbehind->hasPrevious(),
77                $previous    = $lookbehind->getPrevious()
78            )
79            ->then
80                ->integer($key)
81                    ->isEqualTo(0)
82                ->string($current)
83                    ->isEqualTo('a')
84                ->boolean($hasPrevious)
85                    ->isFalse()
86                ->variable($previous)
87                    ->isNull()
88
89            ->when(
90                $lookbehind->next(),
91                $key         = $lookbehind->key(),
92                $current     = $lookbehind->current(),
93                $hasPrevious = $lookbehind->hasPrevious(),
94                $previous    = $lookbehind->getPrevious()
95            )
96            ->then
97                ->integer($key)
98                    ->isEqualTo(1)
99                ->string($current)
100                    ->isEqualTo('b')
101                ->boolean($hasPrevious)
102                    ->isTrue()
103                ->string($previous)
104                    ->isEqualTo('a')
105
106            ->when(
107                $lookbehind->next(),
108                $key         = $lookbehind->key(),
109                $current     = $lookbehind->current(),
110                $hasPrevious = $lookbehind->hasPrevious(),
111                $previous    = $lookbehind->getPrevious()
112            )
113            ->then
114                ->integer($key)
115                    ->isEqualTo(2)
116                ->string($current)
117                    ->isEqualTo('c')
118                ->boolean($hasPrevious)
119                    ->isTrue()
120                ->string($previous)
121                    ->isEqualTo('b');
122    }
123
124    public function case_double_rewind()
125    {
126        $this
127            ->given(
128                $iterator   = new LUT\Map(['a', 'b', 'c']),
129                $lookbehind = new LUT\Lookbehind($iterator)
130            )
131            ->when(
132                $lookbehind->rewind(),
133                $key         = $lookbehind->key(),
134                $current     = $lookbehind->current(),
135                $hasPrevious = $lookbehind->hasPrevious()
136            )
137            ->then
138                ->integer($key)
139                    ->isEqualTo(0)
140                ->string($current)
141                    ->isEqualTo('a')
142                ->boolean($hasPrevious)
143                    ->isFalse()
144
145            ->when(
146                $lookbehind->rewind(),
147                $key         = $lookbehind->key(),
148                $current     = $lookbehind->current(),
149                $hasPrevious = $lookbehind->hasPrevious()
150            )
151            ->then
152                ->integer($key)
153                    ->isEqualTo(0)
154                ->string($current)
155                    ->isEqualTo('a')
156                ->boolean($hasPrevious)
157                    ->isFalse();
158    }
159
160    public function case_empty()
161    {
162        $this
163            ->given(
164                $iterator   = new LUT\Mock(),
165                $lookbehind = new LUT\Lookbehind($iterator)
166            )
167            ->when(
168                $lookbehind->rewind(),
169                $valid = $lookbehind->valid()
170            )
171            ->then
172                ->boolean($valid)
173                    ->isFalse();
174    }
175}
176