All data in a frozen backend remains unchanged and methods which try to add
or modify data result in an exception thrown. Possible expiry times of
individual cache entries are ignored.
A frozen backend can only be thawn by calling the flush() method.
/**
* @test
*/
public function freezeInvokesRedis()
{
$this->redis->expects($this->once())->method('lRange')->with('Foo_Cache:entries', 0, -1)->will($this->returnValue(['entry_1', 'entry_2']));
$this->redis->expects($this->exactly(2))->method('persist');
$this->redis->expects($this->once())->method('set')->with('Foo_Cache:frozen', true);
$this->backend->freeze();
}
/**
* @test
*/
public function freezeFreezesTheCache()
{
$this->assertFalse($this->backend->isFrozen());
for ($i = 0; $i < 10; $i++) {
$this->backend->set('entry_' . $i, 'foo');
}
$this->backend->freeze();
$this->assertTrue($this->backend->isFrozen());
}