chroma/lexers/testdata

Lexer tests

This directory contains input source and expected output lexer tokens.

Input filenames for lexers are in the form <name>.actual. Expected output filenames are in the form <name>.expected.

Each input filename is parsed by the corresponding lexer and checked against the expected JSON-encoded token list.

To add/update tests do the following:

1. export LEXER=csharp
2. Create/edit a file lexers/testdata/${LEXER}.actual (eg. csharp.actual).
3. Run go run ./cmd/chroma/main.go --lexer ${LEXER} --json lexers/testdata/${LEXER}.actual > lexers/testdata/${LEXER}.expected.
4. Run go test -v -run TestLexers ./lexers.

eg.

$ export LEXER=csharp
$ go run ./cmd/chroma/main.go --lexer ${LEXER} --json lexers/testdata/${LEXER}.actual > lexers/testdata/${LEXER}.expected
$ go test -v -run TestLexers ./lexers
=== RUN   TestLexers
=== RUN   TestLexers/C#
=== RUN   TestLexers/CSS
--- PASS: TestLexers (0.01s)
    --- PASS: TestLexers/C# (0.00s)
    --- PASS: TestLexers/CSS (0.00s)
PASS
ok    github.com/alecthomas/chroma/lexers 0.032s