Add test to verify ToC resets between different markdown parses

Author: BenjaminHoegh

tests/TocTest.php

@@ -216,4 +216,25 @@ public function testTocMultipleSettings()
         $actual = $this->parsedownExtended->text($markdown);
         $this->assertEquals($expected, $actual);
     }
+
+    /**
+     * Test case to ensure that the ToC resets between different markdown parses.
+     */
+    public function testTocResetsBetweenParses()
+    {
+        $this->parsedownExtended->config()->set('headings.auto_anchors', true);
+        $this->parsedownExtended->config()->set('toc', true);
+        $this->parsedownExtended->config()->set('toc.tag', '[toc]');
+
+        $markdown1 = "[toc]\n# First";
+        $markdown2 = "[toc]\n# Second";
+
+        $this->parsedownExtended->text($markdown1);
+        $firstToc = $this->parsedownExtended->contentsList();
+
+        $this->parsedownExtended->text($markdown2);
+        $secondToc = $this->parsedownExtended->contentsList();
+
+        $this->assertStringNotContainsString('First', $secondToc);
+        $this->assertStringContainsString('Second', $secondToc);
 }