[CLEANUP] Clean extra whitespace in css selector

src/Property/Selector.php

@@ -9,6 +9,7 @@
 use Sabberworm\CSS\Renderable;
 
 use function Safe\preg_match;
+use function Safe\preg_replace;
 
 /**
  * Class representing a single CSS selector. Selectors have to be split by the comma prior to being passed into this
@@ -74,7 +75,9 @@ public function getSelector(): string
 
     public function setSelector(string $selector): void
     {
-        $this->selector = \trim($selector);
+        $selector = \trim($selector);
+
+        $this->selector = !str_contains($selector, '[') ? preg_replace('/\s{2,}/', ' ', $selector) : $selector;
     }
 
     /**

tests/ParserTest.php

@@ -771,7 +771,7 @@ public function selectorIgnoresInFile(): void
         $document = self::parsedStructureForFile('selector-ignores', Settings::create()->withMultibyteSupport(true));
         $expected = '.some[selectors-may=\'contain-a-{\'] {}'
             . "\n"
-            . '.this-selector  .valid {width: 100px;}'
+            . '.this-selector .valid {width: 100px;}'
             . "\n"
             . '@media only screen and (min-width: 200px) {.test {prop: val;}}';
         self::assertSame($expected, $document->render());

tests/Unit/Property/SelectorTest.php

@@ -141,4 +141,29 @@ public function isValidForInvalidSelectorReturnsFalse(string $selector): void
     {
         self::assertFalse(Selector::isValid($selector));
     }
+
+    /**
+     * @test
+     */
+    public function cleanupSpacesWithinSelector(): void
+    {
+        $selector = <<<'CSS'
+        p    >
+            small
+        CSS;
+
+        $subject = new Selector($selector);
+
+        self::assertSame('p > small', $subject->getSelector());
+    }
+
+    /**
+     * @test
+     */
+    public function doNotCleanupSpacesWithinAttributeSelector(): void
+    {
+        $subject = new Selector('a[title="extra  space"]');
+
+        self::assertSame('a[title="extra  space"]', $subject->getSelector());
+    }
 }