Clear memoized properties when cloning object

src/ValueToString/ToStringMethodProcessor.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace AutoValue\ValueToString;
+
+
+class ToStringMethodProcessor
+{
+
+}

src/ValueWither/WitherMethodProcessor.php

@@ -37,6 +37,7 @@ public function generateMethods(ReflectionMethodCollection $matchedMethods, Prop
             $parameterName = $method->getParameters()[0]->getName();
             $methodBody = <<<THEPHP
         \$result = clone \$this;
+        unset(\$result->__memoized);
         \$result->$propertyName = \${$parameterName};
         return \$result;
 THEPHP;

tests/Console/Build/BuildTest.php

@@ -94,6 +94,18 @@ public function testCommandAutoClass(): void
         self::assertTrue($command1->equals($command2->withPayload($command1->payload())));
     }
 
+    public function testMemoizedValuesResetOnClone(): void
+    {
+        $address = Address::builder()
+            ->setLines('foo')
+            ->setCountry('UK')
+            ->setPostCode(new PostCode())
+            ->build();
+        self::assertSame('foo', $address->firstLine());
+        $address2 = $address->withLines('bar');
+        self::assertSame('bar', $address2->firstLine());
+    }
+
     private function createTempDir(): string
     {
         $path = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'auto-value-php-tests-' . \random_int(1, 1000000);

tests/Console/Build/templates/Address.php

@@ -17,6 +17,12 @@ public abstract function lines(): array;
 
     public abstract function withLines(string ...$lines): self;
 
+    /** @Memoize */
+    public function firstLine(): ?string
+    {
+        return $this->lines()[0] ?? null;
+    }
+
     public abstract function city(): ?string;
 
     public abstract function country(): string;