Skip DateTime vs DateTimeImmutable vs DateTimeInterface conflicts

src/Printer/CollectorMetadataPrinter.php

@@ -71,7 +71,10 @@ public function printArgTypesAsString(MethodCall $methodCall, ExtendedMethodRefl
                 }
             }
 
-            $stringArgTypes[] = $this->printTypeToString($argType);
+            $printedArgType = $this->printTypeToString($argType);
+            $printedArgType = $this->normalizeDateTime($printedArgType);
+
+            $stringArgTypes[] = $printedArgType;
         }
 
         return implode('|', $stringArgTypes);
@@ -101,6 +104,9 @@ public function printParamTypesToString(ClassMethod $classMethod, ?string $class
             $printedParamType = ltrim($printedParamType, '\\');
             $printedParamType = str_replace('|\\', '|', $printedParamType);
 
+            // to avoid DateTime vs DateTimeImmutable vs DateTimeInterface conflicts
+            $printedParamType = $this->normalizeDateTime($printedParamType);
+
             $printedParamTypes[] = $printedParamType;
         }
 
@@ -182,4 +188,17 @@ private function printTypeToString(Type $type): string
 
         return $type->describe(VerbosityLevel::typeOnly());
     }
+
+    private function normalizeDateTime(string $printedType): string
+    {
+        if ($printedType === 'DateTimeImmutable') {
+            return 'DateTimeInterface';
+        }
+
+        if ($printedType === 'DateTime') {
+            return 'DateTimeInterface';
+        }
+
+        return $printedType;
+    }
 }

tests/Rules/NarrowPublicClassMethodParamTypeRule/Fixture/SkipDateTimeMix.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\TypePerfect\Tests\Rules\NarrowPublicClassMethodParamTypeRule\Fixture;
+
+final class SkipDateTimeMix
+{
+    public function markDate(
+        \DateTimeInterface $date
+    ): bool
+    {
+        return true;
+    }
+
+    static public function run(): void
+    {
+        $skipDateTimeMix = new SkipDateTimeMix();
+        $skipDateTimeMix->markDate(
+            new \DateTimeImmutable('15:30')
+        );
+    }
+}

tests/Rules/NarrowPublicClassMethodParamTypeRule/NarrowPublicClassMethodParamTypeRuleTest.php

@@ -26,6 +26,7 @@ public function testRule(array $filePaths, array $expectedErrorsWithLines): void
 
     public static function provideData(): Iterator
     {
+        yield [[__DIR__ . '/Fixture/SkipDateTimeMix.php'], []];
         yield [[__DIR__ . '/Fixture/SkipNonPublicClassMethod.php'], []];
 
         // skip first class callables as anything can be passed there