Use stricter comparison

Author: sebastianbergmann

src/Output/StrictUnifiedDiffOutputBuilder.php

@@ -155,7 +155,7 @@ private function writeDiffHunks(mixed $output, array $diff): void
                         array_splice($diff, $i + 1, 0, [["\n\\ No newline at end of file\n", Differ::NO_LINE_END_EOF_WARNING]]);
                     }
 
-                    if (!count($toFind)) {
+                    if ($toFind === []) {
                         break;
                     }
                 }

src/Output/UnifiedDiffOutputBuilder.php

@@ -103,7 +103,7 @@ private function writeDiffHunks(mixed $output, array $diff): void
                         array_splice($diff, $i + 1, 0, [["\n\\ No newline at end of file\n", Differ::NO_LINE_END_EOF_WARNING]]);
                     }
 
-                    if (!count($toFind)) {
+                    if ($toFind === []) {
                         break;
                     }
                 }

src/Parser.php

@@ -29,7 +29,9 @@ public function parse(string $string): array
     {
         $lines = preg_split('(\r\n|\r|\n)', $string);
 
-        if (!empty($lines) && $lines[count($lines) - 1] === '') {
+        if ($lines !== false &&
+            $lines !== [] &&
+            $lines[count($lines) - 1] === '') {
             array_pop($lines);
         }
 
@@ -63,7 +65,7 @@ public function parse(string $string): array
             }
         }
 
-        if ($diff !== null && count($collected)) {
+        if ($diff !== null && $collected !== []) {
             $this->parseFileDiff($diff, $collected);
 
             $diffs[] = $diff;

tests/Utils/FileUtils.php

@@ -27,7 +27,7 @@ public static function getFileContent(string $file): string
                 sprintf(
                     'Failed to read content of file "%s".%s',
                     $file,
-                    $error ? ' ' . $error['message'] : '',
+                    $error !== null ? ' ' . $error['message'] : '',
                 ),
             );
         }