suggested fix for relativeNamespace function (#87)

Co-authored-by: Kenrick Buchanan <kenrick@specificperformance.com>

Author: nsbucky

src/Blueprint.php

@@ -11,10 +11,17 @@ class Blueprint
     private $lexers = [];
     private $generators = [];
 
-    public static function relativeNamespace(string $fullyQualifiedClassName)
-    {
-        return ltrim(str_replace(config('blueprint.namespace'), '', $fullyQualifiedClassName), '\\');
-    }
+	public static function relativeNamespace(string $fullyQualifiedClassName)
+	{
+		$newClassName = preg_replace(
+			'!^'.preg_quote(config('blueprint.namespace')).'!',
+			'',
+			$fullyQualifiedClassName,
+			1
+		);
+
+		return ltrim($newClassName,'\\');
+	}
 
     public function parse($content)
     {

tests/Feature/BlueprintTest.php

@@ -274,5 +274,27 @@ public function generate_uses_registered_generators_and_returns_generated_files(
             'updated' => ['one/existing.php', 'two/existing.php'],
             'deleted' => ['one/trashed.php', 'two/trashed.php'],
         ], $this->subject->generate($tree));
+    }
+
+	/**
+	 * @test
+	 */
+	public function relative_namespace_only_replace_first_occurrence_of_default_namespace()
+	{
+		$string = "App\Appointments";
+
+		$actual = Blueprint::relativeNamespace($string);
+
+		$this->assertEquals("Appointments", $actual);
+
+		config(['blueprint.namespace'=>'Foo']);
+
+		$string = "Foo\Appointments";
+
+		$actual = Blueprint::relativeNamespace($string);
+
+		$this->assertEquals("Appointments", $actual);
+
+
     }
 }