指明要覆盖的方法
最后更新于：2022-04-01 03:46:19
# 指明要覆盖的方法
`@covers` 标注（参见 [Table B.1, “用于指明测试覆盖哪些方法的标注”](# "Table B.1. 用于指明测试覆盖哪些方法的标注")）可以用在测试代码中来指明测试方法想要对哪些方法进行测试。如果提供了这个信息，则只有指定方法的代码覆盖率信息会被统计。 [Example 11.2, “在测试中指明欲覆盖哪些方法”](# "Example 11.2. 在测试中指明欲覆盖哪些方法")展示了一个例子。
**Example 11.2. 在测试中指明欲覆盖哪些方法**
~~~
<?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());
}
}
?>
~~~
同时，可以用 `@coversNothing` 标注来指明一个测试不覆盖*任何*方法（参见[the section called “@coversNothing”](# "@coversNothing")）。这可以在编写集成测试时用于确保代码覆盖全部来自单元测试。
**Example 11.3. 指明测试不欲覆盖任何方法**
~~~
<?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);
}
}
?>
~~~