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<?php declare(strict_types=1);
namespace PhpParser;
use PhpParser\Node\Expr;
class NodeFinderTest extends \PHPUnit\Framework\TestCase {
private function getStmtsAndVars() {
$assign = new Expr\Assign(new Expr\Variable('a'), new Expr\BinaryOp\Concat(
new Expr\Variable('b'), new Expr\Variable('c')
));
$stmts = [new Node\Stmt\Expression($assign)];
$vars = [$assign->var, $assign->expr->left, $assign->expr->right];
return [$stmts, $vars];
}
public function testFind(): void {
$finder = new NodeFinder();
list($stmts, $vars) = $this->getStmtsAndVars();
$varFilter = function (Node $node) {
return $node instanceof Expr\Variable;
};
$this->assertSame($vars, $finder->find($stmts, $varFilter));
$this->assertSame($vars, $finder->find($stmts[0], $varFilter));
$noneFilter = function () {
return false;
};
$this->assertSame([], $finder->find($stmts, $noneFilter));
}
public function testFindInstanceOf(): void {
$finder = new NodeFinder();
list($stmts, $vars) = $this->getStmtsAndVars();
$this->assertSame($vars, $finder->findInstanceOf($stmts, Expr\Variable::class));
$this->assertSame($vars, $finder->findInstanceOf($stmts[0], Expr\Variable::class));
$this->assertSame([], $finder->findInstanceOf($stmts, Expr\BinaryOp\Mul::class));
}
public function testFindFirst(): void {
$finder = new NodeFinder();
list($stmts, $vars) = $this->getStmtsAndVars();
$varFilter = function (Node $node) {
return $node instanceof Expr\Variable;
};
$this->assertSame($vars[0], $finder->findFirst($stmts, $varFilter));
$this->assertSame($vars[0], $finder->findFirst($stmts[0], $varFilter));
$noneFilter = function () {
return false;
};
$this->assertNull($finder->findFirst($stmts, $noneFilter));
}
public function testFindFirstInstanceOf(): void {
$finder = new NodeFinder();
list($stmts, $vars) = $this->getStmtsAndVars();
$this->assertSame($vars[0], $finder->findFirstInstanceOf($stmts, Expr\Variable::class));
$this->assertSame($vars[0], $finder->findFirstInstanceOf($stmts[0], Expr\Variable::class));
$this->assertNull($finder->findFirstInstanceOf($stmts, Expr\BinaryOp\Mul::class));
}
}
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