feat: add assertVisible and assertMissing assertions

src/Operations/AssertMissing.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Browser\Operations;
+
+use Pest\Browser\Contracts\Operation;
+
+final class AssertMissing implements Operation
+{
+    /**
+     * Creates an operation instance.
+     */
+    public function __construct(
+        private string $selector,
+    ) {
+        //
+    }
+
+    /**
+     * Compile the operation.
+     */
+    public function compile(): string
+    {
+        $escapedSelector = str_replace("'", "\'", $this->selector);
+
+        return "await expect(page.locator('{$escapedSelector}')).toBeHidden();";
+    }
+}

src/Operations/AssertVisible.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Browser\Operations;
+
+use Pest\Browser\Contracts\Operation;
+
+final class AssertVisible implements Operation
+{
+    /**
+     * Creates an operation instance.
+     */
+    public function __construct(
+        private string $selector,
+    ) {
+        //
+    }
+
+    /**
+     * Compile the operation.
+     */
+    public function compile(): string
+    {
+        $escapedSelector = str_replace("'", "\'", $this->selector);
+
+        return "await expect(page.locator('{$escapedSelector}')).toBeVisible();";
+    }
+}

src/PendingTest.php

@@ -137,6 +137,26 @@ public function clickLink(string $text, string $selector = 'a'): self
         return $this;
     }
 
+    /**
+     * Checks if the given element is visible.
+     */
+    public function assertVisible(string $selector): self
+    {
+        $this->operations[] = new Operations\AssertVisible($selector);
+
+        return $this;
+    }
+
+    /**
+     * Checks if the given element is not visible.
+     */
+    public function assertMissing(string $selector): self
+    {
+        $this->operations[] = new Operations\AssertMissing($selector);
+
+        return $this;
+    }
+
     /**
      * Compile the JavaScript test file.
      */

tests/Browser/Operations/AssertMissingTest.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Symfony\Component\Process\Exception\ProcessFailedException;
+
+describe('assert missing', function () {
+    it('passes when the given element is not visible', function () {
+        $this->visit('https://laravel.com')
+            ->assertMissing('.DocSearch-Button-Keys');
+    });
+
+    it('fails when the given element is visible', function () {
+        $this->visit('https://laravel.com')
+            ->assertMissing('body');
+    })->throws(ProcessFailedException::class);
+});

tests/Browser/Operations/AssertVisibleTest.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Symfony\Component\Process\Exception\ProcessFailedException;
+
+describe('assert visible', function () {
+    it('passes when the given element is visible', function () {
+        $this->visit('https://laravel.com')
+            ->assertVisible('body');
+    });
+
+    it('fails when the given element is not visible', function () {
+        $this->visit('https://laravel.com')
+            ->assertVisible('.DocSearch-Button-Keys');
+    })->throws(ProcessFailedException::class);
+});