Add more test cases for abstract methods of traits (#19)

* Add more test cases for abstract methods of traits

* Add trait usage

Author: herndlm

test/files/classes-include-inaccessible-class-nodes.out.php

@@ -70,4 +70,33 @@ trait F
     private function a($a) : void
     {
     }
+
+    /** doc */
+    abstract public function b($a): string;
+
+    /** doc */
+    abstract protected function c($a): string;
+
+    /** doc */
+    abstract private function d($a): string;
+}
+
+final class G
+{
+    use \F;
+
+    /** doc */
+    public function b($a): string
+    {
+    }
+
+    /** doc */
+    protected function c($a): string
+    {
+    }
+
+    /** doc */
+    private function d($a): string
+    {
+    }
 }

test/files/classes.in.php

@@ -79,4 +79,36 @@ private function a($a): void
     {
         return;
     }
+
+    /** doc */
+    abstract public function b($a): string;
+
+    /** doc */
+    abstract protected function c($a): string;
+
+    /** doc */
+    abstract private function d($a): string;
+}
+
+final class G
+{
+    use F;
+
+    /** doc */
+    public function b($a): string
+    {
+        return '';
+    }
+
+    /** doc */
+    protected function c($a): string
+    {
+        return '';
+    }
+
+    /** doc */
+    private function d($a): string
+    {
+        return '';
+    }
 }

test/files/classes.out.php

@@ -52,4 +52,23 @@ trait F
     private function a($a) : void
     {
     }
+
+    /** doc */
+    abstract public function b($a): string;
+
+    /** doc */
+    abstract protected function c($a): string;
+
+    /** doc */
+    abstract private function d($a): string;
+}
+
+final class G
+{
+    use \F;
+
+    /** doc */
+    public function b($a): string
+    {
+    }
 }