test: add unit tests for InlineCss middleware

dotninth · dotninth · commit a01033e4c558 · 2023-08-10T14:31:28.000+03:00
diff --git a/tests/Unit/Middleware/InlineCssTest.php b/tests/Unit/Middleware/InlineCssTest.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace DotNinth\LaravelPageSpeed\Middleware;
+
+it('applies inline css transformation to html content', function () {
+    $middleware = new InlineCss();
+    $buffer = '<html><head></head><body><h1 style="color: red;">Hello, world!</h1><p style="font-size: 14px;">Lorem ipsum dolor sit amet.</p></body></html>';
+
+    $result = $middleware->apply($buffer);
+
+    expect($result)->toContain('<style>');
+    expect($result)->toContain('</style>');
+    expect($result)->toContain('.page_speed_');
+    expect($result)->toContain('color: red;');
+    expect($result)->toContain('font-size: 14px;');
+});
+
+it('injects inline css styles into html head section', function () {
+    $middleware = new InlineCss();
+    $buffer = '<html><head></head><body><h1 style="color: red;">Hello, world!</h1><p style="font-size: 14px;">Lorem ipsum dolor sit amet.</p></body></html>';
+
+    $result = $middleware->apply($buffer);
+
+    expect($result)->toContain('<style>');
+    expect($result)->toContain('</style>');
+    expect($result)->toContain('.page_speed_');
+    expect($result)->toContain('color: red;');
+    expect($result)->toContain('font-size: 14px;');
+});
+
+it('injects class attributes into html tags', function () {
+    $middleware = new InlineCss();
+    $buffer = '<html><head></head><body><h1 style="color: red;">Hello, world!</h1><p style="font-size: 14px;">Lorem ipsum dolor sit amet.</p></body></html>';
+
+    $result = $middleware->apply($buffer);
+
+    expect($result)->not()->toContain('style="');
+    expect($result)->toContain('class="');
+    expect($result)->toContain('page_speed_');
+});
