Merge branch 'fix/markdown-export' into development

diff --cc app/Exports/ExportFormatter.php
Simple merge

diff --cc tests/Exports/MarkdownExportTest.php
index 05ebbc68d7554f7320dcb2f718f17335a04a2db6,0000000000000000000000000000000000000000..3bccd46827095dc52aa6ad0979f023681b5963a8
mode 100644,000000..100644
--- 1/tests/Exports/MarkdownExportTest.php
--- /dev/null
+++ b/tests/Exports/MarkdownExportTest.php
@@@ -1,85 -1,0 +1,97 @@@
 +<?php
 +
 +namespace Tests\Exports;
 +
 +use BookStack\Entities\Models\Book;
 +use Tests\TestCase;
 +
 +class MarkdownExportTest extends TestCase
 +{
 +    public function test_page_markdown_export()
 +    {
 +        $page = $this->entities->page();
 +
 +        $resp = $this->asEditor()->get($page->getUrl('/export/markdown'));
 +        $resp->assertStatus(200);
 +        $resp->assertSee($page->name);
 +        $resp->assertHeader('Content-Disposition', 'attachment; filename="' . $page->slug . '.md"');
 +    }
 +
 +    public function test_page_markdown_export_uses_existing_markdown_if_apparent()
 +    {
 +        $page = $this->entities->page()->forceFill([
 +            'markdown' => '# A header',
 +            'html'     => '<h1>Dogcat</h1>',
 +        ]);
 +        $page->save();
 +
 +        $resp = $this->asEditor()->get($page->getUrl('/export/markdown'));
 +        $resp->assertSee('A header');
 +        $resp->assertDontSee('Dogcat');
 +    }
 +
 +    public function test_page_markdown_export_converts_html_where_no_markdown()
 +    {
 +        $page = $this->entities->page()->forceFill([
 +            'markdown' => '',
 +            'html'     => '<h1>Dogcat</h1><p>Some <strong>bold</strong> text</p>',
 +        ]);
 +        $page->save();
 +
 +        $resp = $this->asEditor()->get($page->getUrl('/export/markdown'));
 +        $resp->assertSee("# Dogcat\n\nSome **bold** text");
 +    }
 +
 +    public function test_chapter_markdown_export()
 +    {
 +        $chapter = $this->entities->chapter();
++        $chapter->description_html = '<p>My <strong>chapter</strong> description</p>';
++        $chapter->save();
 +        $page = $chapter->pages()->first();
++
 +        $resp = $this->asEditor()->get($chapter->getUrl('/export/markdown'));
 +
 +        $resp->assertSee('# ' . $chapter->name);
 +        $resp->assertSee('# ' . $page->name);
++        $resp->assertSee('My **chapter** description');
 +    }
 +
 +    public function test_book_markdown_export()
 +    {
 +        $book = Book::query()->whereHas('pages')->whereHas('chapters')->first();
++        $book->description_html = '<p>My <strong>book</strong> description</p>';
++        $book->save();
++
 +        $chapter = $book->chapters()->first();
++        $chapter->description_html = '<p>My <strong>chapter</strong> description</p>';
++        $chapter->save();
++
 +        $page = $chapter->pages()->first();
 +        $resp = $this->asEditor()->get($book->getUrl('/export/markdown'));
 +
 +        $resp->assertSee('# ' . $book->name);
 +        $resp->assertSee('# ' . $chapter->name);
 +        $resp->assertSee('# ' . $page->name);
++        $resp->assertSee('My **book** description');
++        $resp->assertSee('My **chapter** description');
 +    }
 +
 +    public function test_book_markdown_export_concats_immediate_pages_with_newlines()
 +    {
 +        /** @var Book $book */
 +        $book = Book::query()->whereHas('pages')->first();
 +
 +        $this->asEditor()->get($book->getUrl('/create-page'));
 +        $this->get($book->getUrl('/create-page'));
 +
 +        [$pageA, $pageB] = $book->pages()->where('chapter_id', '=', 0)->get();
 +        $pageA->html = '<p>hello tester</p>';
 +        $pageA->save();
 +        $pageB->name = 'The second page in this test';
 +        $pageB->save();
 +
 +        $resp = $this->get($book->getUrl('/export/markdown'));
 +        $resp->assertDontSee('hello tester# The second page in this test');
 +        $resp->assertSee("hello tester\n\n# The second page in this test");
 +    }
 +}