tartrazine/spec/tartrazine_spec.cr

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require "./spec_helper"
# These are the testcases from Pygments
testcases = Dir.glob("#{__DIR__}/tests/**/*txt").sort
# These lexers don't load because of parsing issues
failing_lexers = {
"webgpu_shading_language",
}
# These testcases fail because of differences in the way chroma and tartrazine
# represent unicode, but they are actually correct
unicode_problems = {
"#{__DIR__}/tests/java/test_string_literals.txt",
"#{__DIR__}/tests/json/test_strings.txt",
"#{__DIR__}/tests/systemd/example1.txt",
}
# These testcases fail because of differences in the way chroma and tartrazine tokenize
# but tartrazine is correct
bad_in_chroma = {
"#{__DIR__}/tests/bash_session/test_comment_after_prompt.txt",
"#{__DIR__}/tests/html/javascript_backtracking.txt",
"#{__DIR__}/tests/java/test_default.txt",
"#{__DIR__}/tests/java/test_multiline_string.txt",
"#{__DIR__}/tests/java/test_numeric_literals.txt",
"#{__DIR__}/tests/octave/test_multilinecomment.txt",
"#{__DIR__}/tests/php/test_string_escaping_run.txt",
"#{__DIR__}/tests/python_2/test_cls_builtin.txt",
}
known_bad = {
"#{__DIR__}/tests/bash_session/fake_ps2_prompt.txt",
"#{__DIR__}/tests/bash_session/prompt_in_output.txt",
"#{__DIR__}/tests/bash_session/ps2_prompt.txt",
"#{__DIR__}/tests/bash_session/test_newline_in_echo_no_ps2.txt",
"#{__DIR__}/tests/bash_session/test_newline_in_echo_ps2.txt",
"#{__DIR__}/tests/bash_session/test_newline_in_ls_no_ps2.txt",
"#{__DIR__}/tests/bash_session/test_newline_in_ls_ps2.txt",
"#{__DIR__}/tests/bash_session/test_virtualenv.txt",
"#{__DIR__}/tests/mcfunction/data.txt",
"#{__DIR__}/tests/mcfunction/selectors.txt",
}
# Tests that fail because of a limitation in PCRE2
not_my_fault = {
"#{__DIR__}/tests/fortran/test_string_cataback.txt",
}
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describe Tartrazine do
describe "Lexer" do
testcases.each do |testcase|
if known_bad.includes?(testcase)
pending "parses #{testcase}".split("/")[-2...].join("/") do
end
else
it "parses #{testcase}".split("/")[-2...].join("/") do
text = File.read(testcase).split("---input---\n").last.split("---tokens---").first
lexer_name = File.basename(File.dirname(testcase)).downcase
unless failing_lexers.includes?(lexer_name) ||
unicode_problems.includes?(testcase) ||
bad_in_chroma.includes?(testcase) ||
not_my_fault.includes?(testcase)
tokenize(lexer_name, text).should eq(chroma_tokenize(lexer_name, text))
end
end
end
end
end
end
# Helper that creates lexer and tokenizes
def tokenize(lexer_name, text)
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lexer = Tartrazine.lexer(lexer_name)
lexer.tokenize(text)
end
# Helper that tokenizes using chroma to validate the lexer
def chroma_tokenize(lexer_name, text)
output = IO::Memory.new
input = IO::Memory.new(text)
Process.run(
"chroma",
["-f", "json", "-l", lexer_name],
input: input, output: output
)
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Tartrazine::Lexer.collapse_tokens(Array(Tartrazine::Token).from_json(output.to_s))
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end