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<?php |
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namespace Hateoas\Tests\Expression; |
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use Prophecy\Argument; |
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use Symfony\Component\ExpressionLanguage\ExpressionLanguage; |
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use Symfony\Component\ExpressionLanguage\Node\Node; |
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use Symfony\Component\ExpressionLanguage\ParsedExpression; |
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use Hateoas\Tests\TestCase; |
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use Hateoas\Expression\ExpressionEvaluator; |
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use Hateoas\Expression\ExpressionFunctionInterface; |
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class ExpressionEvaluatorTest extends TestCase |
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{ |
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public function testNullEvaluate() |
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{ |
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$expressionLanguageProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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$expressionLanguageProphecy |
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->parse(Argument::any()) |
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->shouldNotBeCalled() |
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; |
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$expressionEvaluator = new ExpressionEvaluator($expressionLanguageProphecy->reveal()); |
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$this->assertSame('hello', $expressionEvaluator->evaluate('hello', null)); |
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} |
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public function testEvaluate() |
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{ |
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$data = new \StdClass(); |
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$expressionLanguageProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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$expressionLanguageProphecy |
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->parse('"42"', array('object')) |
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->willReturn($parsedExpression = new ParsedExpression('', new Node())) |
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; |
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$expressionLanguageProphecy |
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->evaluate($parsedExpression, array('object' => $data)) |
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->willReturn('42') |
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; |
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$expressionEvaluator = new ExpressionEvaluator($expressionLanguageProphecy->reveal()); |
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$this->assertSame('42', $expressionEvaluator->evaluate('expr("42")', $data)); |
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} |
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public function testEvaluateArray() |
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{ |
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$parsedExpressions = array( |
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new ParsedExpression('a', new Node()), |
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new ParsedExpression('aa', new Node()), |
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new ParsedExpression('aaa', new Node()), |
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); |
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$data = new \StdClass(); |
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$ELProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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$ELProphecy->parse('a', array('object'))->willReturn($parsedExpressions[0])->shouldBeCalledTimes(1); |
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$ELProphecy->parse('aa', array('object'))->willReturn($parsedExpressions[1])->shouldBeCalledTimes(1); |
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$ELProphecy->parse('aaa', array('object'))->willReturn($parsedExpressions[2])->shouldBeCalledTimes(1); |
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$ELProphecy->evaluate($parsedExpressions[0], array('object' => $data))->willReturn(1); |
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$ELProphecy->evaluate($parsedExpressions[1], array('object' => $data))->willReturn(2); |
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$ELProphecy->evaluate($parsedExpressions[2], array('object' => $data))->willReturn(3); |
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$expressionEvaluator = new ExpressionEvaluator($ELProphecy->reveal()); |
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$array = array( |
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'expr(a)' => 'expr(aa)', |
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'hello' => array('expr(aaa)'), |
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); |
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$this->assertSame( |
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$expressionEvaluator->evaluateArray($array, $data), |
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[ |
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1 => 2, |
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'hello' => [3], |
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] |
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); |
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} |
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public function testSetContextVariable() |
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{ |
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$data = new \StdClass(); |
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$expressionLanguageProphecy = $this->prophesize('Symfony\Component\ExpressionLanguage\ExpressionLanguage'); |
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$expressionLanguageProphecy |
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->parse('name', array('name', 'object')) |
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->willReturn($parsedExpression = new ParsedExpression('', new Node())) |
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->shouldBeCalledTimes(1) |
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; |
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$expressionLanguageProphecy |
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->evaluate($parsedExpression, array('object' => $data, 'name' => 'Adrien')) |
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->willReturn('Adrien') |
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->shouldBeCalledTimes(1) |
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; |
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$expressionEvaluator = new ExpressionEvaluator($expressionLanguageProphecy->reveal()); |
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$expressionEvaluator->setContextVariable('name', 'Adrien'); |
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$this->assertSame('Adrien', $expressionEvaluator->evaluate('expr(name)', $data)); |
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} |
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public function testRegisterFunction() |
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{ |
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$expressionEvaluator = new ExpressionEvaluator(new ExpressionLanguage()); |
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$expressionEvaluator->registerFunction(new HelloExpressionFunction()); |
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$this->assertSame('Hello, toto!', $expressionEvaluator->evaluate('expr(hello("toto"))', null)); |
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} |
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/** |
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* @dataProvider getTestEvaluateNonStringData |
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*/ |
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public function testEvaluateNonString($value) |
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{ |
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$expressionEvaluator = new ExpressionEvaluator(new ExpressionLanguage()); |
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$this->assertSame($value, $expressionEvaluator->evaluate($value, array())); |
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} |
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public function getTestEvaluateNonStringData() |
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{ |
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return array( |
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array(true), |
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array(1.0), |
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array(new \StdClass), |
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array(array('foo' => 'bar')), |
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); |
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} |
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} |
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class HelloExpressionFunction implements ExpressionFunctionInterface |
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{ |
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public function getName() |
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{ |
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return 'hello'; |
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} |
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public function getCompiler() |
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{ |
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return function ($value) { |
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return sprintf('$hello_helper->hello(%s)', $value); |
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}; |
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} |
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public function getEvaluator() |
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{ |
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return function (array $context, $value) { |
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return $context['hello_helper']->hello($value); |
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}; |
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} |
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public function getContextVariables() |
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{ |
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return array('hello_helper' => $this); |
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} |
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public function hello($name) |
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{ |
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return sprintf('Hello, %s!', $name); |
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} |
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} |
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willdurand /
Hateoas
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.