Add option to limit export of (large) arrays (to speed up PHPUnit)

src/Exporter.php

@@ -38,6 +38,11 @@
 
 final readonly class Exporter
 {
+    public function __construct(
+        private int $shortenArraysLongerThan = 10
+    ) {
+    }
+
     /**
      * Exports a value as a string.
      *
@@ -58,30 +63,19 @@ public function export(mixed $value, int $indentation = 0): string
 
     public function shortenedRecursiveExport(array &$data, ?RecursionContext $processed = null): string
     {
-        $result = [];
-
         if (!$processed) {
             $processed = new RecursionContext;
         }
+        $overallCount = count($data, COUNT_RECURSIVE);
+        $counter      = 0;
 
-        $array = $data;
+        $export = $this->shortenedCountedRecursiveExport($data, $processed, $counter);
 
-        /* @noinspection UnusedFunctionResultInspection */
-        $processed->add($data);
-
-        foreach ($array as $key => $value) {
-            if (is_array($value)) {
-                if ($processed->contains($data[$key]) !== false) {
-                    $result[] = '*RECURSION*';
-                } else {
-                    $result[] = '[' . $this->shortenedRecursiveExport($data[$key], $processed) . ']';
-                }
-            } else {
-                $result[] = $this->shortenedExport($value);
-            }
+        if ($overallCount > $this->shortenArraysLongerThan) {
+            $export .= sprintf(', ...%d more elements', $overallCount - $this->shortenArraysLongerThan);
         }
 
-        return implode(', ', $result);
+        return $export;
     }
 
     /**
@@ -195,6 +189,36 @@ public function toArray(mixed $value): array
         return $array;
     }
 
+    private function shortenedCountedRecursiveExport(array &$data, RecursionContext $processed, int &$counter): string
+    {
+        $result = [];
+
+        $array = $data;
+
+        /* @noinspection UnusedFunctionResultInspection */
+        $processed->add($data);
+
+        foreach ($array as $key => $value) {
+            if ($counter > $this->shortenArraysLongerThan) {
+                break;
+            }
+
+            if (is_array($value)) {
+                if ($processed->contains($data[$key]) !== false) {
+                    $result[] = '*RECURSION*';
+                } else {
+                    $result[] = '[' . $this->shortenedCountedRecursiveExport($data[$key], $processed, $counter) . ']';
+                }
+            } else {
+                $result[] = $this->shortenedExport($value);
+            }
+
+            $counter++;
+        }
+
+        return implode(', ', $result);
+    }
+
     private function recursiveExport(mixed &$value, int $indentation = 0, ?RecursionContext $processed = null): string
     {
         if ($value === null) {

tests/ExporterTest.php

@@ -321,6 +321,15 @@ public static function provideNonBinaryMultibyteStrings(): array
 
     public static function shortenedRecursiveExportProvider(): array
     {
+        $bigArray = [];
+
+        for ($i = 0; $i < 20_000; $i++) {
+            $bigArray[] = 'cast(\'foo' . $i . '\' as blob)';
+        }
+
+        $array     = [1, 2, 'hello', 'world', true, false];
+        $deepArray = [$array, [$array, [$array, [$array, [$array, [$array, [$array, [$array, [$array, [$array]]]]]]]]]];
+
         return [
             'null'                   => [[null], 'null'],
             'boolean true'           => [[true], 'true'],
@@ -333,6 +342,8 @@ public static function shortenedRecursiveExportProvider(): array
             'with assoc array key'   => [['foo' => 'bar'], '\'bar\''],
             'multidimensional array' => [[[1, 2, 3], [3, 4, 5]], '[1, 2, 3], [3, 4, 5]'],
             'object'                 => [[new stdClass], 'stdClass Object ()'],
+            'big array'              => [$bigArray, "'cast('foo0' as blob)', 'cast('foo1' as blob)', 'cast('foo2' as blob)', 'cast('foo3' as blob)', 'cast('foo4' as blob)', 'cast('foo5' as blob)', 'cast('foo6' as blob)', 'cast('foo7' as blob)', 'cast('foo8' as blob)', 'cast('foo9' as blob)', 'cast('foo10' as blob)', ...19990 more elements"],
+            'deep array'             => [$deepArray, "[1, 2, 'hello', 'world', true, false], [[1, 2, 'hello', 'world']], ...69 more elements"],
         ];
     }