From 09bad17c2a461aa7284035f8a041bfffba4cb907 Mon Sep 17 00:00:00 2001
From: Oliver Klee <github@oliverklee.de>
Date: Sun, 9 Mar 2025 10:04:04 +0100
Subject: [PATCH] [TASK] Add some rendering tests for `Document`

Part of #757
---
 tests/Functional/CSSList/DocumentTest.php | 137 ++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 tests/Functional/CSSList/DocumentTest.php

diff --git a/tests/Functional/CSSList/DocumentTest.php b/tests/Functional/CSSList/DocumentTest.php
new file mode 100644
index 000000000..71334f7f4
--- /dev/null
+++ b/tests/Functional/CSSList/DocumentTest.php
@@ -0,0 +1,137 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Functional\CSSList;
+
+use PHPUnit\Framework\TestCase;
+use Sabberworm\CSS\CSSList\AtRuleBlockList;
+use Sabberworm\CSS\CSSList\Document;
+use Sabberworm\CSS\OutputFormat;
+use Sabberworm\CSS\Property\Charset;
+use Sabberworm\CSS\Value\CSSString;
+
+/**
+ * @covers \Sabberworm\CSS\CSSList\Document
+ */
+final class DocumentTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function renderWithoutOutputFormatCanRenderEmptyDocument(): void
+    {
+        $subject = new Document();
+
+        self::assertSame('', $subject->render());
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithVirginOutputFormatCanRenderEmptyDocument(): void
+    {
+        $subject = new Document();
+
+        self::assertSame('', $subject->render(new OutputFormat()));
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithDefaultOutputFormatCanRenderEmptyDocument(): void
+    {
+        $subject = new Document();
+
+        self::assertSame('', $subject->render(OutputFormat::create()));
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithCompactOutputFormatCanRenderEmptyDocument(): void
+    {
+        $subject = new Document();
+
+        self::assertSame('', $subject->render(OutputFormat::createCompact()));
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithPrettyOutputFormatCanRenderEmptyDocument(): void
+    {
+        $subject = new Document();
+
+        self::assertSame('', $subject->render(OutputFormat::createPretty()));
+    }
+
+    /**
+     * Builds a subject with one `@charset` rule and one `@media` rule.
+     */
+    private function buildSubjectWithAtRules(): Document
+    {
+        $subject = new Document();
+        $charset = new Charset(new CSSString('UTF-8'));
+        $subject->append($charset);
+        $mediaQuery = new AtRuleBlockList('media', 'screen');
+        $subject->append($mediaQuery);
+
+        return $subject;
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithoutOutputFormatCanRenderAtRules(): void
+    {
+        $subject = $this->buildSubjectWithAtRules();
+
+        $expected = '@charset "UTF-8";' . "\n" . '@media screen {}';
+        self::assertSame($expected, $subject->render());
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithVirginOutputFormatCanRenderAtRules(): void
+    {
+        $subject = $this->buildSubjectWithAtRules();
+
+        $expected = '@charset "UTF-8";' . "\n" . '@media screen {}';
+        self::assertSame($expected, $subject->render(new OutputFormat()));
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithDefaultOutputFormatCanRenderAtRules(): void
+    {
+        $subject = $this->buildSubjectWithAtRules();
+
+        $expected = '@charset "UTF-8";' . "\n" . '@media screen {}';
+        self::assertSame($expected, $subject->render(OutputFormat::create()));
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithCompactOutputFormatCanRenderAtRules(): void
+    {
+        $subject = $this->buildSubjectWithAtRules();
+
+        $expected = '@charset "UTF-8";@media screen{}';
+        self::assertSame($expected, $subject->render(OutputFormat::createCompact()));
+    }
+
+    /**
+     * @test
+     */
+    public function renderWithPrettyOutputFormatCanRenderAtRules(): void
+    {
+        $subject = $this->buildSubjectWithAtRules();
+
+        $expected = "\n" . '@charset "UTF-8";' . "\n\n" . '@media screen {}' . "\n";
+        self::assertSame($expected, $subject->render(OutputFormat::createPretty()));
+    }
+}