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25 lines
756 B
PHP
25 lines
756 B
PHP
<?php
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namespace DesignPatterns\Structural\Proxy\Tests;
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use DesignPatterns\Structural\Proxy\BankAccountProxy;
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use PHPUnit\Framework\TestCase;
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class ProxyTest extends TestCase
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{
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public function testProxyWillOnlyExecuteExpensiveGetBalanceOnce()
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{
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$bankAccount = new BankAccountProxy();
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$bankAccount->deposit(30);
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// this time balance is being calculated
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$this->assertSame(30, $bankAccount->getBalance());
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// inheritance allows for BankAccountProxy to behave to an outsider exactly like ServerBankAccount
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$bankAccount->deposit(50);
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// this time the previously calculated balance is returned again without re-calculating it
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$this->assertSame(30, $bankAccount->getBalance());
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}
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}
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