diff options
author | Luke Granger-Brown <git@lukegb.com> | 2021-04-23 15:02:36 +0000 |
---|---|---|
committer | Luke Granger-Brown <git@lukegb.com> | 2021-04-23 18:42:35 +0000 |
commit | 4de343cccfd6591ab798e03600d8b3626db8efbd (patch) | |
tree | e50e66fdbac073c8a0953fe2270498b4b9456e74 /nixos/doc/manual/development | |
parent | 3ac9de55b08fa8b20f8e56dfe0016d51834eb079 (diff) | |
download | nixpkgs-4de343cccfd6591ab798e03600d8b3626db8efbd.tar nixpkgs-4de343cccfd6591ab798e03600d8b3626db8efbd.tar.gz nixpkgs-4de343cccfd6591ab798e03600d8b3626db8efbd.tar.bz2 nixpkgs-4de343cccfd6591ab798e03600d8b3626db8efbd.tar.lz nixpkgs-4de343cccfd6591ab798e03600d8b3626db8efbd.tar.xz nixpkgs-4de343cccfd6591ab798e03600d8b3626db8efbd.tar.zst nixpkgs-4de343cccfd6591ab798e03600d8b3626db8efbd.zip |
nixos/test-driver: use a variety of different Tesseract settings for OCR
When performing OCR, some of the Tesseract settings perform better than others on a variety of different workloads, but they mostly take ~negligible incremental time to run compared to the overhead of running the ImageMagick filters. After this commit, we try using all three of the current Tesseract models (classic, LSTM, and classic+LSTM) to generate output text. This fixes chromium-90's tests at release-20.09, and should make cases where you're looking for *specific* text better, with the tradeoff of running Tesseract multiple times. To make it sensible to cherrypick this into release-20.09, this doesn't change the existing API surface for the test driver. In particular, get_screen_text continues to have the existing behaviour.
Diffstat (limited to 'nixos/doc/manual/development')
-rw-r--r-- | nixos/doc/manual/development/writing-nixos-tests.xml | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/nixos/doc/manual/development/writing-nixos-tests.xml b/nixos/doc/manual/development/writing-nixos-tests.xml index 5f70f74d5d9..5a95436915f 100644 --- a/nixos/doc/manual/development/writing-nixos-tests.xml +++ b/nixos/doc/manual/development/writing-nixos-tests.xml @@ -188,6 +188,25 @@ start_all() </varlistentry> <varlistentry> <term> + <methodname>get_screen_text_variants</methodname> + </term> + <listitem> + <para> + Return a list of different interpretations of what is currently visible + on the machine's screen using optical character recognition. The number + and order of the interpretations is not specified and is subject to + change, but if no exception is raised at least one will be returned. + </para> + <note> + <para> + This requires passing <option>enableOCR</option> to the test attribute + set. + </para> + </note> + </listitem> + </varlistentry> + <varlistentry> + <term> <methodname>get_screen_text</methodname> </term> <listitem> @@ -350,7 +369,8 @@ start_all() <para> Wait until the supplied regular expressions matches the textual contents of the screen by using optical character recognition (see - <methodname>get_screen_text</methodname>). + <methodname>get_screen_text</methodname> and + <methodname>get_screen_text_variants</methodname>). </para> <note> <para> |