Adding `name` to `glob_lit_tests` will make it conform with other
implementations of `glob_lit_tests` out there. If someone uses this repo
while providing a different version of `glob_lit_tests` that requires a
name, those build rules will become invalid.
Created `explorer/trace_testdata/full_trace.carbon` to test the whole trace and some changes in `explorer/file_test.cpp` to treat `/trace_testdata/` tests differently.
Overall, cleaning up remaining lit uses.
#2851 had removed FileCheck invocations from some of the explorer tests; this starts as just restoring that. But, now that we have far fewer `lit` tests, it seems best to refine `lit.cfg.py` to focus on providing fewer commands (not all were even used).
Also, adding testing of an error to explorer (which I noticed due to a change that would've broken that) made me notice that autoupdate_lit_test's for_lit logic didn't actually work, so I'm just cutting it and going to manual updates. Really, we might want to just remove lit autoupdate support altogether since it's only a couple tests using it, but I'm not ready to make that change right now.
Fixes#2912
Replacing direct raw_string_ostream uses. I figure the wrapper should be used more consistently.
There are still remaining raw_string_ostream uses that weren't compatible -- I'm continuing to look at those, but felt it was cleaner to have this on its own.
This is just a cleanup. Since we now have a testing directory, I think this is a better home for testonly libraries than //common. (I was thinking about this when I was considering adding more test_raw_ostream deps)
In explorer, we already support parsing a string_view, so use that. In toolchain, we need to build support, probably using vfs, so that's a todo.
bazel test //explorer:file_test --runs_per_test=5
- branch: Stats over 250 runs: max = 18.3s, min = 5.2s, avg = 11.2s, dev = 2.9s
- trunk: Stats over 250 runs: max = 22.3s, min = 5.9s, avg = 12.1s, dev = 2.8s
Not a dramatic improvement, but maybe more effective long-term, and this'd been requested on #2876
By implementing these improvements, users will have the ability to choose specific parts of the trace output.
Currently, when executing a file using the explorer with the --trace_file=- or --trace_file=filename.txt flag, the resulting output is an extensive and verbose log containing all the information.
In this PR, I have introduced the `ProgramPhase` enum class, which have distinct phases encountered during the compilation of a program in the explorer. Each member of this enum class corresponds to a specific phase, signifying the relevant information to be included in the trace output.
The phases covered by the `ProgramPhase` enum class are as follows:
1. Printing the source program
2. Name resolution
3. Control flow resolution
4. Type checking
5. Unformed variable resolution
6. Printing declarations
7. Printing the timings
8. Printing whole output.
These phases can be selected by passing the following compiler flags along with `--trace_file=-`.
`-trace_source_program`, `-trace_name_resolution`, `-trace_control_flow_resolution`, `-trace_type_checking`, `-trace_unformed_variables_resolution`, `-trace_declarations`, `-trace_execution`, `-trace_timing` and `-trace_all`. If none of these flags is passed only execution trace will be added to the output.
Co-authored-by: Richard Smith <richard@metafoo.co.uk>
I'm looking at this as I start thinking about handling `import`. Syntax is based on llvm's `split-file` tool.
The `std::vector` -> `llvm::SmallVector` switch is minor, I'm doing it here because I had to touch everything anyways and I think for tests I'll lean slightly more towards the toolchain's way of doing things versus explorer's.
I believe this broke when I was changing path handling.
Bad:
```
bazel test //testing/file_test:file_test_base_test.subset --test_arg=/usr/local/...elided.../execroot/carbon/bazel-out/k8-fastbuild/bin/testing/file_test/file_test_base_test.runfiles/carbon/testing/file_test/example.carbon
```
Good:
```
bazel test //testing/file_test:file_test_base_test.subset --test_arg=testing/file_test/example.carbon
```
The intent of this change is that instead of paths looking like `explorer/testdata/foo/bar.carbon` (repo-relative), they're now just `bar.carbon` (local). The consequence is that paths should be a bit more durable in various environments, and just paths should be shorter and easier to read.
The explorer's prelude is an exception to this since it comes from data, rather than being the test target. Due to the change in approaches, it needs the regex again.
Uses #2829
- Moves most parts to //testing/lit_test to be consistent with //testing/file_test.
- Separates the autoupdate script out because it's shared between lit_test and file_test now, not lit-specific.
- Renames scripts to autoupdate_testdata (or autoupdate_lit_testdata for explorer's extra) to be more consistent with the non-lit-specific setup.
- Switches from execv to subprocess.call to head off a subtle issue regarding execution of multiple scripts, which we're likely to want in the future. Mostly in this PR because everything was already being touched.
- Removes autoupdate's dependency on merge_output in order to (a) better support the division of lit and non-lit logic and (b) remove a subprocess, for reasons similar to file_test's removal of subprocesses.
This is really part of #2811, but is extracted out to allow a little review in parallelism because #2811 expects #2813. Getting this in will allow migration of toolchain tests, whereas #2811 is focused on explorer tests. For explorer test timing information, see #2811.
The syntax being used for matching deliberately mirrors the `FileCheck` setup, partly for compatibility if something changes, partly so there's nothing new to learn, partly so that we don't need to build more test updating.
Individual tests look like:
```
[ RUN ] ParseAndExecuteTestFile.explorer/parse_and_execute/testdata/assert/convert.carbon
To test this file alone, run:
bazel test //explorer/parse_and_execute:file_test.subset --test_arg=explorer/parse_and_execute/testdata/assert/convert.carbon
[ OK ] ParseAndExecuteTestFile.explorer/parse_and_execute/testdata/assert/convert.carbon (202 ms)
```
The printed command line is intended to assist developers in debugging a single test, particularly when sharding the main test. The use of a single `.subset` target means the total number of targets is constant even as the number of test files increases, which may be important for some `bazel` execution environments. I plan to make similar changes to the `glob_sh_run` implementation so that we have consistent setups, i.e. that we no longer create target-per-file scaling risks.
This uses `native_test` to share the test binary, avoiding re-linking if files are individually run.
Investigation did reveal a mistake where STDOUT/STDERR wasn't prefixed on empty output lines; this PR fixes that mistake, so that output is fully covered.
Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
Jordan Rupprecht
Prabhat Sachdeva
Adrien Leravat
