Add unit test suite: 54 tests across models, core, and providers

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/unit/Models/SourceDataTest.php

@@ -0,0 +1,73 @@
+<?php
+/**
+ * Tests for PRAutoBlogger_Source_Data value object.
+ *
+ * @package PRAutoBlogger\Tests\Models
+ */
+
+namespace PRAutoBlogger\Tests\Models;
+
+use PRAutoBlogger\Tests\BaseTestCase;
+
+class SourceDataTest extends BaseTestCase {
+
+    /**
+     * Require the class under test.
+     */
+    protected function setUp(): void {
+        parent::setUp();
+        require_once PRAB_PLUGIN_DIR . 'includes/models/class-prab-source-data.php';
+    }
+
+    /**
+     * Test construction with all required fields.
+     */
+    public function test_constructor_sets_all_properties(): void {
+        $data = new \PRAutoBlogger_Source_Data(
+            'Test Title',
+            'https://example.com/article',
+            'This is the content body.',
+            'rss'
+        );
+
+        $this->assertSame( 'Test Title', $data->get_title() );
+        $this->assertSame( 'https://example.com/article', $data->get_url() );
+        $this->assertSame( 'This is the content body.', $data->get_content() );
+        $this->assertSame( 'rss', $data->get_source_type() );
+    }
+
+    /**
+     * Test that to_array returns all fields.
+     */
+    public function test_to_array_returns_complete_representation(): void {
+        $data = new \PRAutoBlogger_Source_Data(
+            'Array Test',
+            'https://example.com',
+            'Content here.',
+            'manual'
+        );
+
+        $array = $data->to_array();
+
+        $this->assertIsArray( $array );
+        $this->assertArrayHasKey( 'title', $array );
+        $this->assertArrayHasKey( 'url', $array );
+        $this->assertArrayHasKey( 'content', $array );
+        $this->assertArrayHasKey( 'source_type', $array );
+        $this->assertSame( 'Array Test', $array['title'] );
+    }
+
+    /**
+     * Test construction with empty content is allowed.
+     */
+    public function test_allows_empty_content(): void {
+        $data = new \PRAutoBlogger_Source_Data(
+            'Title Only',
+            'https://example.com',
+            '',
+            'rss'
+        );
+
+        $this->assertSame( '', $data->get_content() );
+    }
+}