# 指明要覆蓋的方法 `@covers` 標注（參見 [Table?B.1, “用于指明測試覆蓋哪些方法的標注”](# "Table?B.1.?用于指明測試覆蓋哪些方法的標注")）可以用在測試代碼中來指明測試方法想要對哪些方法進行測試。如果提供了這個信息，則只有指定方法的代碼覆蓋率信息會被統計。 [Example?11.2, “在測試中指明欲覆蓋哪些方法”](# "Example?11.2.?在測試中指明欲覆蓋哪些方法")展示了一個例子。 **Example?11.2.?在測試中指明欲覆蓋哪些方法** ~~~ <?php class BankAccountTest extends PHPUnit_Framework_TestCase { protected $ba; protected function setUp() { $this->ba = new BankAccount; } /** * @covers BankAccount::getBalance */ public function testBalanceIsInitiallyZero() { $this->assertEquals(0, $this->ba->getBalance()); } /** * @covers BankAccount::withdrawMoney */ public function testBalanceCannotBecomeNegative() { try { $this->ba->withdrawMoney(1); } catch (BankAccountException $e) { $this->assertEquals(0, $this->ba->getBalance()); return; } $this->fail(); } /** * @covers BankAccount::depositMoney */ public function testBalanceCannotBecomeNegative2() { try { $this->ba->depositMoney(-1); } catch (BankAccountException $e) { $this->assertEquals(0, $this->ba->getBalance()); return; } $this->fail(); } /** * @covers BankAccount::getBalance * @covers BankAccount::depositMoney * @covers BankAccount::withdrawMoney */ public function testDepositWithdrawMoney() { $this->assertEquals(0, $this->ba->getBalance()); $this->ba->depositMoney(1); $this->assertEquals(1, $this->ba->getBalance()); $this->ba->withdrawMoney(1); $this->assertEquals(0, $this->ba->getBalance()); } } ?> ~~~ 同時，可以用 `@coversNothing` 標注來指明一個測試不覆蓋*任何*方法（參見[the section called “@coversNothing”](# "@coversNothing")）。這可以在編寫集成測試時用于確保代碼覆蓋全部來自單元測試。 **Example?11.3.?指明測試不欲覆蓋任何方法** ~~~ <?php class GuestbookIntegrationTest extends PHPUnit_Extensions_Database_TestCase { /** * @coversNothing */ public function testAddEntry() { $guestbook = new Guestbook(); $guestbook->addEntry("suzy", "Hello world!"); $queryTable = $this->getConnection()->createQueryTable( 'guestbook', 'SELECT * FROM guestbook' ); $expectedTable = $this->createFlatXmlDataSet("expectedBook.xml") ->getTable("guestbook"); $this->assertTablesEqual($expectedTable, $queryTable); } } ?> ~~~