tests namespaced + tool

tests/iterators.phpt

@@ -2,6 +2,8 @@
 
 declare(strict_types=1);
 
+namespace Dakujem\Test;
+
 use Dakujem\Oliva\DataNodeContract;
 use Dakujem\Oliva\Iterator\LevelOrderTraversal;
 use Dakujem\Oliva\Iterator\Native;
@@ -10,11 +12,10 @@ use Dakujem\Oliva\Iterator\PreOrderTraversal;
 use Dakujem\Oliva\Iterator\Support\Counter;
 use Dakujem\Oliva\Node;
 use Dakujem\Oliva\TreeNodeContract;
+use RecursiveIteratorIterator;
 use Tester\Assert;
-use Tester\Environment;
 
-require_once __DIR__ . '/../vendor/autoload.php';
-Environment::setup();
+require_once __DIR__ . '/setup.php';
 
 (function () {
     $counter = new Counter();

tests/mptree.phpt

@@ -2,6 +2,8 @@
 
 declare(strict_types=1);
 
+namespace Dakujem\Test;
+
 use Dakujem\Oliva\Iterator\PreOrderTraversal;
 use Dakujem\Oliva\MaterializedPath\Path;
 use Dakujem\Oliva\MaterializedPath\Support\AlmostThere;
@@ -10,11 +12,11 @@ use Dakujem\Oliva\Node;
 use Dakujem\Oliva\Seed;
 use Dakujem\Oliva\Tree;
 use Dakujem\Oliva\TreeNodeContract;
+use LogicException;
+use RuntimeException;
 use Tester\Assert;
-use Tester\Environment;
 
-require_once __DIR__ . '/../vendor/autoload.php';
-Environment::setup();
+require_once __DIR__ . '/setup.php';
 
 class Item
 {
@@ -92,7 +94,7 @@ class Item
     Assert::same([], $vectorExtractor(null));
     Assert::throws(function () use ($vectorExtractor) {
         $vectorExtractor(4.2);
-    }, \RuntimeException::class); // TODO improve
+    }, RuntimeException::class); // TODO improve
 
 
     // an empty input can not result in any tree
@@ -165,7 +167,7 @@ class Item
     ], $toArray($root));
 
 
-    Tree::reindexTree($root, fn(Node $node)=>$node->data()->id, null);
+    Tree::reindexTree($root, fn(Node $node) => $node->data()->id, null);
     Assert::same([
         '>' => '[0]',
         '>1' => '[1]',
@@ -190,6 +192,4 @@ class Item
         '>3' => '[3]', // .3
         '>9' => '[9]', // .9
     ], $toArray($root));
-
-
 })();

tests/nodes.phpt

@@ -2,14 +2,14 @@
 
 declare(strict_types=1);
 
+namespace Dakujem\Test;
+
 use Dakujem\Oliva\Node;
 use Dakujem\Oliva\Simple\NodeBuilder;
 use Dakujem\Oliva\Simple\TreeWrapper;
 use Tester\Assert;
-use Tester\Environment;
 
-require_once __DIR__ . '/../vendor/autoload.php';
-Environment::setup();
+require_once __DIR__ . '/setup.php';
 
 (function () {
     $builder = new NodeBuilder(fn(mixed $data) => new Node($data));

tests/recursive.phpt

@@ -2,17 +2,18 @@
 
 declare(strict_types=1);
 
+namespace Dakujem\Test;
+
 use Dakujem\Oliva\Iterator\Filter;
 use Dakujem\Oliva\Iterator\PreOrderTraversal;
 use Dakujem\Oliva\Node;
 use Dakujem\Oliva\Recursive\TreeBuilder;
 use Dakujem\Oliva\Seed;
 use Dakujem\Oliva\TreeNodeContract;
+use LogicException;
 use Tester\Assert;
-use Tester\Environment;
 
-require_once __DIR__ . '/../vendor/autoload.php';
-Environment::setup();
+require_once __DIR__ . '/setup.php';
 
 class Item
 {

tests/setup.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Dakujem\Test;
+
+use Dakujem\Oliva\DataNodeContract;
+use Dakujem\Oliva\Iterator\PreOrderTraversal;
+use Dakujem\Oliva\TreeNodeContract;
+use Tester\Environment;
+
+
+require_once __DIR__ . '/../vendor/autoload.php';
+Environment::setup();
+
+final class TreeTesterTool
+{
+    public static function concatTree(
+        TreeNodeContract $node,
+        string $traversalClass = PreOrderTraversal::class,
+        string $delimiter = '',
+    ): string {
+        return self::concat(
+            new $traversalClass($node),
+            $delimiter,
+        );
+    }
+
+    public static function concat(iterable $traversal, string $delimiter = ''): string
+    {
+        return self::reduce(
+            $traversal,
+            fn(string $carry, DataNodeContract $item) => $carry . $delimiter . $item->data(),
+        );
+    }
+
+    public static function reduce(iterable $traversal, callable $reducer, string $carry = ''): string
+    {
+        foreach ($traversal as $node) {
+            $carry = $reducer($carry, $node);
+        }
+        return $carry;
+    }
+}
+