244: Clean up 1-line arrays in the unit test

tests/src/Unit/process/TransposeTest.php

@@ -49,11 +49,24 @@ class TransposeTest extends MigrateProcessTestCase {
         'expected_output' => [],
       ],
       'image files and alt text' => [
-        'input' => [['2.png', '3.png', '5.png', '7.png'], ['two', 'three', 'five', 'seven']],
-        'expected_output' => [['2.png', 'two'], ['3.png', 'three'], ['5.png', 'five'], ['7.png', 'seven']],
+        'input' => [
+          'src' => ['2.png', '3.png', '5.png', '7.png'],
+          'alt' => ['two', 'three', 'five', 'seven'],
+        ],
+        'expected_output' => [
+          ['2.png', 'two'],
+          ['3.png', 'three'],
+          ['5.png', 'five'],
+          ['7.png', 'seven'],
+        ],
       ],
       'indexed arrays' => [
-        'input' => [['a' => 1, 'b' => 2], ['c' => 3, 'd' => 4], ['e' => 5, 'f' => 6], ['g' => 7, 'h' => 8]],
+        'input' => [
+          ['a' => 1, 'b' => 2],
+          ['c' => 3, 'd' => 4],
+          ['e' => 5, 'f' => 6],
+          ['g' => 7, 'h' => 8],
+        ],
         'output' => [[1, 3, 5, 7], [2, 4, 6, 8]],
       ],
     ];