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Filename : GeneratorTest.php
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<?php

namespace Faker\Test;

use Faker\Generator;

class GeneratorTest extends \PHPUnit_Framework_TestCase
{
    public function testAddProviderGivesPriorityToNewlyAddedProvider()
    {
        $generator = new Generator;
        $generator->addProvider(new FooProvider());
        $generator->addProvider(new BarProvider());
        $this->assertEquals('barfoo', $generator->format('fooFormatter'));
    }

    public function testGetFormatterReturnsCallable()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $this->assertTrue(is_callable($generator->getFormatter('fooFormatter')));
    }

    public function testGetFormatterReturnsCorrectFormatter()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $expected = array($provider, 'fooFormatter');
        $this->assertEquals($expected, $generator->getFormatter('fooFormatter'));
    }

    /**
     * @expectedException InvalidArgumentException
     */
    public function testGetFormatterThrowsExceptionOnIncorrectProvider()
    {
        $generator = new Generator;
        $generator->getFormatter('fooFormatter');
    }

    /**
     * @expectedException InvalidArgumentException
     */
    public function testGetFormatterThrowsExceptionOnIncorrectFormatter()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $generator->getFormatter('barFormatter');
    }

    public function testFormatCallsFormatterOnProvider()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $this->assertEquals('foobar', $generator->format('fooFormatter'));
    }

    public function testFormatTransfersArgumentsToFormatter()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $this->assertEquals('bazfoo', $generator->format('fooFormatterWithArguments', array('foo')));
    }

    public function testParseReturnsSameStringWhenItContainsNoCurlyBraces()
    {
        $generator = new Generator();
        $this->assertEquals('fooBar#?', $generator->parse('fooBar#?'));
    }

    public function testParseReturnsStringWithTokensReplacedByFormatters()
    {
        $generator = new Generator();
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $this->assertEquals('This is foobar a text with foobar', $generator->parse('This is {{fooFormatter}} a text with {{ fooFormatter }}'));
    }

    public function testMagicGetCallsFormat()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $this->assertEquals('foobar', $generator->fooFormatter);
    }

    public function testMagicCallCallsFormat()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $this->assertEquals('foobar', $generator->fooFormatter());
    }

    public function testMagicCallCallsFormatWithArguments()
    {
        $generator = new Generator;
        $provider = new FooProvider();
        $generator->addProvider($provider);
        $this->assertEquals('bazfoo', $generator->fooFormatterWithArguments('foo'));
    }

    public function testSeed()
    {
        $generator = new Generator;

        $generator->seed(0);
        $mtRandWithSeedZero = mt_rand();
        $generator->seed(0);
        $this->assertEquals($mtRandWithSeedZero, mt_rand(), 'seed(0) should be deterministic.');

        $generator->seed();
        $mtRandWithoutSeed = mt_rand();
        $this->assertNotEquals($mtRandWithSeedZero, $mtRandWithoutSeed, 'seed() should be different than seed(0)');
        $generator->seed();
        $this->assertNotEquals($mtRandWithoutSeed, mt_rand(), 'seed() should not be deterministic.');

        $generator->seed('10');
        $this->assertTrue(true, 'seeding with a non int value doesn\'t throw an exception');
    }
}

class FooProvider
{
    public function fooFormatter()
    {
        return 'foobar';
    }

    public function fooFormatterWithArguments($value = '')
    {
        return 'baz' . $value;
    }
}

class BarProvider
{
    public function fooFormatter()
    {
        return 'barfoo';
    }
}