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1 | <?php |
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2 | |||
3 | namespace Hateoas\Tests\Expression; |
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4 | |||
5 | use Prophecy\Argument; |
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6 | use Symfony\Component\ExpressionLanguage\ExpressionLanguage; |
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7 | use Symfony\Component\ExpressionLanguage\Node\Node; |
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8 | use Symfony\Component\ExpressionLanguage\ParsedExpression; |
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9 | use Hateoas\Tests\TestCase; |
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10 | use Hateoas\Expression\ExpressionEvaluator; |
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11 | use Hateoas\Expression\ExpressionFunctionInterface; |
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12 | |||
13 | class ExpressionEvaluatorTest extends TestCase |
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14 | { |
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15 | public function testNullEvaluate() |
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16 | { |
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17 | $expressionLanguageProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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18 | $expressionLanguageProphecy |
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19 | ->parse(Argument::any()) |
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20 | ->shouldNotBeCalled() |
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21 | ; |
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22 | $expressionEvaluator = new ExpressionEvaluator($expressionLanguageProphecy->reveal()); |
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23 | |||
24 | $this->assertSame('hello', $expressionEvaluator->evaluate('hello', null)); |
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25 | } |
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26 | |||
27 | public function testEvaluate() |
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28 | { |
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29 | $data = new \StdClass(); |
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30 | |||
31 | $expressionLanguageProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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32 | $expressionLanguageProphecy |
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33 | ->parse('"42"', array('object')) |
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34 | ->willReturn($parsedExpression = new ParsedExpression('', new Node())) |
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35 | ; |
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36 | $expressionLanguageProphecy |
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37 | ->evaluate($parsedExpression, array('object' => $data)) |
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38 | ->willReturn('42') |
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39 | ; |
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40 | |||
41 | $expressionEvaluator = new ExpressionEvaluator($expressionLanguageProphecy->reveal()); |
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42 | |||
43 | $this->assertSame('42', $expressionEvaluator->evaluate('expr("42")', $data)); |
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44 | } |
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45 | |||
46 | public function testEvaluateArray() |
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47 | { |
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48 | $parsedExpressions = array( |
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49 | new ParsedExpression('a', new Node()), |
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50 | new ParsedExpression('aa', new Node()), |
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51 | new ParsedExpression('aaa', new Node()), |
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52 | ); |
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53 | $data = new \StdClass(); |
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54 | |||
55 | $ELProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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56 | $ELProphecy->parse('a', array('object'))->willReturn($parsedExpressions[0])->shouldBeCalledTimes(1); |
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57 | $ELProphecy->parse('aa', array('object'))->willReturn($parsedExpressions[1])->shouldBeCalledTimes(1); |
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58 | $ELProphecy->parse('aaa', array('object'))->willReturn($parsedExpressions[2])->shouldBeCalledTimes(1); |
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59 | |||
60 | $ELProphecy->evaluate($parsedExpressions[0], array('object' => $data))->willReturn(1); |
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61 | $ELProphecy->evaluate($parsedExpressions[1], array('object' => $data))->willReturn(2); |
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62 | $ELProphecy->evaluate($parsedExpressions[2], array('object' => $data))->willReturn(3); |
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63 | |||
64 | $expressionEvaluator = new ExpressionEvaluator($ELProphecy->reveal()); |
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65 | |||
66 | $array = array( |
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67 | 'expr(a)' => 'expr(aa)', |
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68 | 'hello' => array('expr(aaa)'), |
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69 | ); |
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70 | |||
71 | $this->assertSame( |
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72 | $expressionEvaluator->evaluateArray($array, $data), |
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73 | [ |
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74 | 1 => 2, |
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75 | 'hello' => [3], |
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76 | ] |
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77 | ); |
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78 | } |
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79 | |||
80 | public function testSetContextVariable() |
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81 | { |
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82 | $data = new \StdClass(); |
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83 | |||
84 | $expressionLanguageProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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85 | $expressionLanguageProphecy |
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86 | ->parse('name', array('name', 'object')) |
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87 | ->willReturn($parsedExpression = new ParsedExpression('', new Node())) |
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88 | ->shouldBeCalledTimes(1) |
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89 | ; |
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90 | $expressionLanguageProphecy |
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91 | ->evaluate($parsedExpression, array('object' => $data, 'name' => 'Adrien')) |
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92 | ->willReturn('Adrien') |
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93 | ->shouldBeCalledTimes(1) |
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94 | ; |
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95 | |||
96 | $expressionEvaluator = new ExpressionEvaluator($expressionLanguageProphecy->reveal()); |
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97 | $expressionEvaluator->setContextVariable('name', 'Adrien'); |
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98 | |||
99 | $this->assertSame('Adrien', $expressionEvaluator->evaluate('expr(name)', $data)); |
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100 | } |
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101 | |||
102 | public function testRegisterFunction() |
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103 | { |
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104 | $expressionEvaluator = new ExpressionEvaluator(new ExpressionLanguage()); |
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105 | $expressionEvaluator->registerFunction(new HelloExpressionFunction()); |
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106 | |||
107 | $this->assertSame('Hello, toto!', $expressionEvaluator->evaluate('expr(hello("toto"))', null)); |
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108 | } |
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109 | |||
110 | /** |
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111 | * @dataProvider getTestEvaluateNonStringData |
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112 | */ |
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113 | public function testEvaluateNonString($value) |
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114 | { |
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115 | $expressionEvaluator = new ExpressionEvaluator(new ExpressionLanguage()); |
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116 | |||
117 | $this->assertSame($value, $expressionEvaluator->evaluate($value, array())); |
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118 | } |
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119 | |||
120 | public function getTestEvaluateNonStringData() |
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121 | { |
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122 | return array( |
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123 | array(true), |
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124 | array(1.0), |
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125 | array(new \StdClass), |
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126 | array(array('foo' => 'bar')), |
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127 | ); |
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128 | } |
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129 | } |
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130 | |||
131 | class HelloExpressionFunction implements ExpressionFunctionInterface |
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132 | { |
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133 | public function getName() |
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134 | { |
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135 | return 'hello'; |
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136 | } |
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137 | |||
138 | public function getCompiler() |
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139 | { |
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140 | return function ($value) { |
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141 | return sprintf('$hello_helper->hello(%s)', $value); |
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142 | }; |
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143 | } |
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144 | |||
145 | public function getEvaluator() |
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146 | { |
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147 | return function (array $context, $value) { |
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148 | return $context['hello_helper']->hello($value); |
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149 | }; |
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150 | } |
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151 | |||
152 | public function getContextVariables() |
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153 | { |
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154 | return array('hello_helper' => $this); |
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155 | } |
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156 | |||
157 | public function hello($name) |
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158 | { |
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159 | return sprintf('Hello, %s!', $name); |
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160 | } |
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161 | } |
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162 |
Having each class in a dedicated file usually plays nice with PSR autoloaders and is therefore a well established practice. If you use other autoloaders, you might not want to follow this rule.