lib: Introduce the PlainExporter

This class exports things into plain text. It follows a close format to
that of the one for UOC, but without any formatting.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/test/controllers/exports_controller_test.rb b/test/controllers/exports_controller_test.rb
index fe94362..0b0ba1d 100644
--- a/test/controllers/exports_controller_test.rb
+++ b/test/controllers/exports_controller_test.rb
@@ -42,4 +42,21 @@ class ExportsControllerTest < ActionDispatch::IntegrationTest
 
     assert_equal @response.body, file_fixture('underscores.uoc.tex').read
   end
+
+  test 'plain: works' do
+    get search_exports_url(0, format: 'txt')
+
+    assert_equal @response.body, file_fixture('all.txt').read.strip
+    assert_equal 'text/plain', @response.media_type
+  end
+
+  test 'plain: underscore is removed for the title' do
+    things(:thing1).update!(title: 'This is a _title_ with _many_ underscores')
+
+    get search_exports_url(0, format: 'txt')
+
+    body = @response.body.split("\n")
+
+    assert_includes body.last, 'This is a title with many underscores'
+  end
 end