/**
* @throws NonExistentKey When the key cannot be found and no fallback is defined
*/
public function getValue(string $key, string $fallback = null) : string
{
if (array_key_exists($key, $this->data)) {
return $this->data[$key];
}
if (null !== $fallback) {
return $fallback;
}
throw NonExistentKey::fromNonExistentKey($key);
}
public function testFromNonExistentKey()
{
$this->assertSame('Non-existent key "foo" provided', NonExistentKey::fromNonExistentKey('foo')->getMessage());
}