feat(v3.2.7): expand WCAG ruleset to 127 rules, add HTML syntax linter, single-pass rule engine, template preprocessor, and accessibility analytics

tests/Rules/HeadingOrderTest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace YakNet\AccessibilityConsole\Tests\Rules;
+
+use PHPUnit\Framework\TestCase;
+use YakNet\AccessibilityConsole\Core\Scanner;
+use YakNet\AccessibilityConsole\Rules\HeadingOrder;
+
+class HeadingOrderTest extends TestCase
+{
+    public function testFlagsSkippedHeadingLevel(): void
+    {
+        $scanner = new Scanner();
+        $scanner->addRule(new HeadingOrder());
+
+        $violations = $scanner->scan('<div><h1>Main Heading</h1><h3>Skipped Subheading</h3></div>');
+        $this->assertCount(1, $violations);
+        $this->assertSame('WCAG_1_3_1_HEADING', $violations[0]->ruleId);
+    }
+
+    public function testPassesSequentialHeadings(): void
+    {
+        $scanner = new Scanner();
+        $scanner->addRule(new HeadingOrder());
+
+        $violations = $scanner->scan('<div><h1>Main Heading</h1><h2>Section</h2><h3>Sub-section</h3></div>');
+        $this->assertCount(0, $violations);
+    }
+
+    public function testIsStatelessAcrossMultipleScans(): void
+    {
+        $scanner = new Scanner();
+        $scanner->addRule(new HeadingOrder());
+
+        // First scan ends with H3
+        $scanner->scan('<div><h1>H1</h1><h2>H2</h2><h3>H3</h3></div>');
+
+        // Second scan starts with H1, should not flag jump from previous scan's H3
+        $violations = $scanner->scan('<div><h1>Fresh Document H1</h1><h2>H2</h2></div>');
+        $this->assertCount(0, $violations);
+    }
+}