41 lines
1.4 KiB
Nix
41 lines
1.4 KiB
Nix
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import ../make-test-python.nix (
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{ pkgs, ... }:
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{
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name = "timidity-with-vorbis";
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nodes.machine =
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{ pkgs, ... }:
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{
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environment.systemPackages = with pkgs; [
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(timidity.override { enableVorbis = true; })
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ffmpeg # # for `ffprobe`
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];
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};
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testScript = ''
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import json
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start_all()
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## TiMidity++ is around and it claims to support Ogg Vorbis.
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machine.succeed("command -v timidity")
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machine.succeed("timidity --help | grep 'Ogg Vorbis'")
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## TiMidity++ manages to process a MIDI input and produces an Ogg Vorbis
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## output file. NOTE: the `timidity` CLI succeeds even when the input file
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## does not exist; hence our test for the output file's existence.
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machine.succeed("cp ${./tam-lin.midi} tam-lin.midi")
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machine.succeed("timidity -Ov tam-lin.midi && test -e tam-lin.ogg")
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## The output file has the expected characteristics.
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metadata_as_text = machine.succeed("ffprobe -show_format -print_format json -i tam-lin.ogg")
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metadata = json.loads(metadata_as_text)
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assert metadata['format']['format_name'] == 'ogg', \
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f"expected 'format_name' to be 'ogg', got '{metadata['format']['format_name']}'"
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assert 37 <= float(metadata['format']['duration']) <= 38, \
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f"expected 'duration' to be between 37s and 38s, got {metadata['format']['duration']}s"
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'';
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}
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)
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