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1 <?php
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2 /*
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3 * This file is part of the Comparator package.
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4 *
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5 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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6 *
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7 * For the full copyright and license information, please view the LICENSE
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8 * file that was distributed with this source code.
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9 */
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10
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11 namespace SebastianBergmann\Comparator;
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12
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13 /**
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14 * Compares scalar or NULL values for equality.
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15 */
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16 class ScalarComparator extends Comparator
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17 {
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18 /**
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19 * Returns whether the comparator can compare two values.
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20 *
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21 * @param mixed $expected The first value to compare
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22 * @param mixed $actual The second value to compare
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23 * @return bool
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24 * @since Method available since Release 3.6.0
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25 */
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26 public function accepts($expected, $actual)
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27 {
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28 return ((is_scalar($expected) xor null === $expected) &&
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29 (is_scalar($actual) xor null === $actual))
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30 // allow comparison between strings and objects featuring __toString()
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31 || (is_string($expected) && is_object($actual) && method_exists($actual, '__toString'))
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32 || (is_object($expected) && method_exists($expected, '__toString') && is_string($actual));
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33 }
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34
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35 /**
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36 * Asserts that two values are equal.
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37 *
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38 * @param mixed $expected First value to compare
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39 * @param mixed $actual Second value to compare
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40 * @param float $delta Allowed numerical distance between two values to consider them equal
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41 * @param bool $canonicalize Arrays are sorted before comparison when set to true
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42 * @param bool $ignoreCase Case is ignored when set to true
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43 *
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44 * @throws ComparisonFailure
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45 */
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46 public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false)
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47 {
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48 $expectedToCompare = $expected;
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49 $actualToCompare = $actual;
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50
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51 // always compare as strings to avoid strange behaviour
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52 // otherwise 0 == 'Foobar'
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53 if (is_string($expected) || is_string($actual)) {
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54 $expectedToCompare = (string) $expectedToCompare;
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55 $actualToCompare = (string) $actualToCompare;
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56
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57 if ($ignoreCase) {
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58 $expectedToCompare = strtolower($expectedToCompare);
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59 $actualToCompare = strtolower($actualToCompare);
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60 }
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61 }
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62
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63 if ($expectedToCompare != $actualToCompare) {
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64 if (is_string($expected) && is_string($actual)) {
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65 throw new ComparisonFailure(
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66 $expected,
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67 $actual,
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68 $this->exporter->export($expected),
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69 $this->exporter->export($actual),
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70 false,
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71 'Failed asserting that two strings are equal.'
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72 );
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73 }
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74
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75 throw new ComparisonFailure(
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76 $expected,
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77 $actual,
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78 // no diff is required
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79 '',
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80 '',
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81 false,
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82 sprintf(
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83 'Failed asserting that %s matches expected %s.',
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84 $this->exporter->export($actual),
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85 $this->exporter->export($expected)
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86 )
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87 );
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88 }
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89 }
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90 }
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