Merge pull request #386 from phparkitect/single-letter-class

adds fix to consider valid a single letter class

Author: fain182

src/Analyzer/FullyQualifiedClassName.php

@@ -58,7 +58,7 @@ public function namespace(): string
 
     public static function fromString(string $fqcn): self
     {
-        $validFqcn = '/^[a-zA-Z_\x7f-\xff\\\\][a-zA-Z0-9_\x7f-\xff\\\\]*[a-zA-Z0-9_\x7f-\xff]$/';
+        $validFqcn = '/^[a-zA-Z0-9_\x7f-\xff\\\\]*[a-zA-Z0-9_\x7f-\xff]$/';
 
         if (!(bool) preg_match($validFqcn, $fqcn)) {
             throw new \RuntimeException("$fqcn is not a valid namespace definition");

tests/Unit/Analyzer/FullyQualifiedClassNameTest.php

@@ -11,15 +11,14 @@ class FullyQualifiedClassNameTest extends TestCase
     public function patternProvider(): array
     {
         return [
-          ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables\Fruits\Banana', true],
-          ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables\*\Banana', true],
-          ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables', true],
+            ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables\Fruits\Banana', true],
+            ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables\*\Banana', true],
+            ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables', true],
             ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables\\', true],
-
             ['Food\Vegetables\Fruits\Banana', 'Food\Vegetables\*', true],
-          ['Food\Vegetables\Fruits\Mango', '', false],
-          ['Food\Veg', 'Food\Vegetables', false],
-          ['Food\Vegetables', 'Food\Veg', false],
+            ['Food\Vegetables\Fruits\Mango', '', false],
+            ['Food\Veg', 'Food\Vegetables', false],
+            ['Food\Vegetables', 'Food\Veg', false],
         ];
     }
 
@@ -41,6 +40,12 @@ public function test_should_throw_if_invalid_namespace_is_passed(): void
         FullyQualifiedClassName::fromString('-Gvnn');
     }
 
+    public function test_single_letter_class_is_valid(): void
+    {
+        $fqcn = FullyQualifiedClassName::fromString('A');
+        $this->assertEquals('A', $fqcn->className());
+    }
+
     public function test_should_return_class_name(): void
     {
         $fqcn = FullyQualifiedClassName::fromString('Food\Vegetables\Fruits\Banana');