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lib/sc/tests/FeedRssTest.php

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+<?php
+
+namespace Spekulatius\PHPScraper\Tests;
+
+use Spekulatius\PHPScraper\DataTransferObjects\FeedEntry;
+
+class FeedRssTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @test
+     */
+    public function testMissingRssUrls()
+    {
+        $web = new \Spekulatius\PHPScraper\PHPScraper;
+
+        // Navigate to the test page.
+        $web->go('https://test-pages.phpscraper.de/meta/missing.html');
+
+        // This page shouldn't contain any RSS feeds.
+        $this->assertEmpty($web->rssUrls);
+    }
+
+    /**
+     * @test
+     */
+    public function testRssUrls()
+    {
+        $web = new \Spekulatius\PHPScraper\PHPScraper;
+
+        // Navigate to the test page.
+        $web->go('https://test-pages.phpscraper.de/meta/feeds.html');
+
+        // Did we get the expected result? Any URLs should be made absolute.
+        $this->assertSame([
+            'https://test-pages.phpscraper.de/absolute.xml',
+            'https://test-pages.phpscraper.de/relative.xml',
+        ], $web->rssUrls);
+    }
+
+    /**
+     * Tests if we can use a custom url instead of a identified one.
+     *
+     * @test
+     */
+    public function testCustomRssUrl()
+    {
+        $web = new \Spekulatius\PHPScraper\PHPScraper;
+
+        // Navigate to the test page.
+        $web->go('https://test-pages.phpscraper.de/meta/feeds.html');
+
+        // We should always allow to use a custom url.
+        // Both files are the same.
+        // One URL isn't linked from the feeds.html and therefore is custom.
+        $this->assertSame(
+            $web->rssRaw('https://test-pages.phpscraper.de/custom_rss.xml'),
+            $web->rssRaw('https://test-pages.phpscraper.de/relative.xml')
+        );
+    }
+
+    /**
+     * We should support both absolute and relative URLs.
+     *
+     * @test
+     */
+    public function testDifferentRssUrlTypes()
+    {
+        $web = new \Spekulatius\PHPScraper\PHPScraper;
+
+        // Navigate to the test page. As the URL is predefined, it's only about the base URL.
+        $web->go('https://test-pages.phpscraper.de/meta/feeds.html');
+
+        // Test 1: Absolute URL
+        $this->assertSame(
+            $web->rssRaw($web->rssUrls[0]),
+            $web->rssRaw($web->currentBaseHost . '/custom_rss.xml'),
+        );
+
+        // Test 2: Relative URL
+        $this->assertSame(
+            $web->rssRaw($web->rssUrls[0]),
+            $web->rssRaw('/custom_rss.xml'),
+        );
+    }
+
+    /**
+     * Tests the raw parsing.
+     *
+     * @test
+     */
+    public function testRssRawContent()
+    {
+        $web = new \Spekulatius\PHPScraper\PHPScraper;
+
+        // Navigate to the test page.
+        $web->go('https://test-pages.phpscraper.de/meta/feeds.html');
+
+        // The raw RSS is rather unhandy to work with. Let's put it in a var before testing stuff.
+        $rssRaw = $web->rssRaw('https://test-pages.phpscraper.de/custom_rss.xml')[0]['entry'];
+
+        // Ensure the structure is an nested array
+        $this->assertTrue(is_array($rssRaw));
+        $this->assertTrue(is_array($rssRaw[4]));
+
+        // Check some entries to ensure the parsing works.
+        $this->assertSame(
+            $rssRaw[4]['link']['@attributes']['href'],
+            'https://peterthaleikis.com/posts/how-i-built-my-first-browser-extension/'
+        );
+        $this->assertSame(
+            $rssRaw[2]['link']['@attributes']['href'],
+            'https://peterthaleikis.com/posts/how-to-use-pug-on-netlify/'
+        );
+        $this->assertSame(
+            $rssRaw[0]['link']['@attributes']['href'],
+            'https://peterthaleikis.com/posts/startup-name-check:-experiences-of-the-first-week/'
+        );
+    }
+
+    /**
+     * Tests the DTO creation.
+     *
+     * @test
+     */
+    public function testRss()
+    {
+        $web = new \Spekulatius\PHPScraper\PHPScraper;
+
+        // Navigate to the test page.
+        $web->go('https://test-pages.phpscraper.de/meta/feeds.html');
+
+        // The raw RSS is rather unhandy to work with (hence we actually use the DTOs).
+        $rss = $web->rss('https://test-pages.phpscraper.de/custom_rss.xml');
+
+        // Check the count
+        $this->assertSame(37, count($rss));
+
+        // Check some entries to ensure the parsing works.
+        // Set 1
+        $this->assertTrue($rss[4] instanceof FeedEntry);
+        $this->assertSame(
+            $rss[4]->title,
+            'How I Built My First Browser Extension'
+        );
+        $this->assertSame(
+            $rss[4]->link,
+            'https://peterthaleikis.com/posts/how-i-built-my-first-browser-extension/'
+        );
+
+        // Set 2
+        $this->assertTrue($rss[2] instanceof FeedEntry);
+        $this->assertSame(
+            $rss[2]->title,
+            'How to Use Pug on Netlify?'
+        );
+        $this->assertSame(
+            $rss[2]->link,
+            'https://peterthaleikis.com/posts/how-to-use-pug-on-netlify/'
+        );
+
+        // Set 3
+        $this->assertTrue($rss[0] instanceof FeedEntry);
+        $this->assertSame(
+            $rss[0]->title,
+            'Startup Name Check: Experiences of the First week'
+        );
+        $this->assertSame(
+            $rss[0]->link,
+            'https://peterthaleikis.com/posts/startup-name-check:-experiences-of-the-first-week/'
+        );
+    }
+}