[8.x] Allows to clear translated parsed keys (#39490)

* Allows to clear translated parsed keys

* Update NamespacedItemResolver.php

Co-authored-by: Taylor Otwell <[email protected]>

Author: nunomaduro

src/Illuminate/Support/NamespacedItemResolver.php

@@ -99,4 +99,14 @@ public function setParsedKey($key, $parsed)
     {
         $this->parsed[$key] = $parsed;
     }
+
+    /**
+     * Flush the cache of parsed keys.
+     *
+     * @return void
+     */
+    public function flushParsedKeys()
+    {
+        $this->parsed = [];
+    }
 }

tests/Support/SupportNamespacedItemResolverTest.php

@@ -26,4 +26,17 @@ public function testParsedItemsAreCached()
 
         $this->assertEquals(['foo'], $r->parseKey('foo.bar'));
     }
+
+    public function testParsedItemsMayBeFlushed()
+    {
+        $r = $this->getMockBuilder(NamespacedItemResolver::class)->onlyMethods(['parseBasicSegments', 'parseNamespacedSegments'])->getMock();
+        $r->expects($this->once())->method('parseBasicSegments')->will(
+            $this->returnValue(['bar'])
+        );
+
+        $r->setParsedKey('foo.bar', ['foo']);
+        $r->flushParsedKeys();
+
+        $this->assertEquals(['bar'], $r->parseKey('foo.bar'));
+    }
 }