1# Trace test data
2
3## Trace golden tests
4
5Trace tests can be generated by running
6
7```
8go generate .
9```
10
11with the relevant toolchain in this directory.
12
13This will put the tests into a `tests` directory where the trace reader
14tests will find them.
15
16A subset of tests can be regenerated by specifying a regexp pattern for
17the names of tests to generate in the `GOTRACETEST` environment
18variable.
19Test names are defined as the name of the `.go` file that generates the
20trace, but with the `.go` extension removed.
21
22## Trace test programs
23
24The trace test programs in the `testprog` directory generate traces to
25stdout.
26Otherwise they're just normal programs.
27
28## Trace debug commands
29
30The `cmd` directory contains helpful tools for debugging traces.
31
32* `gotraceraw` parses traces without validation.
33 It can produce a text version of the trace wire format, or convert
34 the text format back into bytes.
35* `gotracevalidate` parses traces and validates them.
36 It performs more rigorous checks than the parser does on its own,
37 which helps for debugging the parser as well.
38 In fact, it performs the exact same checks that the tests do.
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