/**
* Scan child scopes and execute a function against each one passing an
* accumulator reference along.
*
* @param Scope $scope
* @param callable $fn
* @param array $accumulator
* @return array
*/
protected function scanChildren(Scope $scope, callable $fn, &$accumulator = [])
{
if (!empty($accumulator)) {
return $accumulator;
}
$children = $scope->getChildScopes();
foreach ($children as $childScope) {
$fn($childScope, $accumulator);
$this->scanChildren($childScope, $fn, $accumulator);
}
return $accumulator;
}
});
});
});
context('when calling a mixed in property', function () {
it('should throw an exception when property not found', function () {
$exception = null;
try {
$this->scope->nope;
} catch (\Exception $e) {
$exception = $e;
}
assert(!is_null($exception), 'exception should not be null');
});
context('and the desired property is on a parent scope', function () {
it('should look up the property on the scope parent', function () {
$parent = new Scope();
$child = new Scope();
$parent->parentProperty = 'value';
$parent->mixin($child);
assert($child->parentProperty === 'value', 'expected child to be able to look at parent scope');
});
});
context("and the desired property is on a child scope's child", function () {
it("should look up property on the child scope's child", function () {
$testScope = new TestScope();
$testScope->mixin(new TestChildScope());
$this->scope->mixin($testScope);
$surname = $this->scope->surname;
assert($surname === "scaturro", "expected scope to look up child scope's child property");
});
context("when mixing in multiple scopes, one of which has a child", function () {
