tests: completed for all languages

fix: parsing search videos without duration

notes/dictionary.md

@@ -0,0 +1,32 @@
+# Parsing localized data from YouTube
+
+Since YouTube's API is outputting the website as it should be rendered by the client,
+the data received from the API is already localized. This affects dates, times and
+number formats.
+
+To be able to successfully parse them, we need to collect samples in every language and
+build a dictionary.
+
+### Timeago
+
+- Relative date format used for video upload dates and comments.
+- Examples: "1 hour ago", "3 months ago"
+
+### Playlist dates
+
+- Playlist update dates are always day-accurate, either as textual dates or in the form
+  of "n days ago"
+- Examples: "Last updated on Jan 3, 2020", "Updated today", "Updated yesterday",
+  "Updated 3 days ago"
+
+### Video duration
+
+- In Danisch ("da") video durations are formatted using dots instead of colons. Example:
+  "12.31", "3.03.52"
+
+### Numbers
+
+- Large numbers (subscriber/view counts) are rounded and shown using a decimal prefix
+- Examples: "1.4M views"
+- There is an exception for the value 0 ("no views") and in some languages for the value
+  1 (pt: "Um vídeo")