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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import io
import sys
from os import path
from pathlib import Path
import mozunit
from expect_helper import expect
# Shenanigans to import the FOG glean_parser runner
FOG_ROOT_PATH = path.abspath(
path.join(path.dirname(__file__), path.pardir, path.pardir)
)
sys.path.append(path.join(FOG_ROOT_PATH, "build_scripts", "glean_parser_ext"))
import run_glean_parser
def test_gifft_codegen():
"""
A regression test. Very fragile.
It generates C++ for GIFFT for metrics_test.yaml and compares it
byte-for-byte with expected output C++ files.
To generate new expected output files, set `UPDATE_EXPECT=1` when running the test suite:
UPDATE_EXPECT=1 mach test toolkit/components/glean/tests/pytest
"""
options = {"allow_reserved": False}
here_path = Path(path.dirname(__file__))
input_files = [here_path / "metrics_test.yaml"]
all_objs, options = run_glean_parser.parse_with_options(input_files, options)
for probe_type in ("Event", "Histogram", "Scalar"):
output_fd = io.StringIO()
cpp_fd = io.StringIO()
run_glean_parser.output_gifft_map(output_fd, probe_type, all_objs, cpp_fd)
expect(here_path / f"gifft_output_{probe_type}", output_fd.getvalue())
if probe_type == "Event":
expect(here_path / "gifft_output_EventExtra", cpp_fd.getvalue())
if __name__ == "__main__":
mozunit.main()
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