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import os
import re
import mozunit
import yaml
LINTER = "includes"
topsrcdir = os.path.join(os.path.dirname(__file__), "..", "..", "..")
api_yaml = os.path.join(topsrcdir, "mfbt", "api.yml")
assert os.path.exists(api_yaml), f"includes linter configuration missing in {api_yaml}"
def check_symbols_unicity(symbols):
sorted_symbols = sorted(symbols)
sorted_symbols_set = sorted(set(symbols))
if sorted_symbols != sorted_symbols_set:
# Not the most efficient implementation, but it rarely happens and it's readable.
duplicates = [x for x in sorted_symbols_set if sorted_symbols.count(x) > 1]
raise AssertionError(
f"symbol{'s' if len(duplicates) > 1 else ''} listed more than once: {', '.join(duplicates)}"
)
def test_lint_api_yml(lint):
with open(api_yaml) as fd:
description = yaml.safe_load(fd)
category_re = {
"variables": r"\b{}\b",
"functions": r"\b{}\b",
"macros": r"\b{}\b",
"types": r"\b{}\b",
"literal": r'\boperator""{}\b',
}
# Ensure all listed file exist and contain the described symbols
mfbt_dir = os.path.join(topsrcdir, "mfbt")
for header, categories in description.items():
header_path = os.path.join(mfbt_dir, header)
assert os.path.exists(
header_path
), f"{header} described in {api_yaml}, but missing in mfbt/"
with open(header_path) as fd:
header_content = fd.read()
# NOTE: This detects removal of symbols in mfbt/* not reflected in
# api.yml, but not addition of symbols.
for category in ("variables", "functions", "macros", "types", "literal"):
symbols = categories.get(category, [])
check_symbols_unicity(symbols)
for symbol in symbols:
symbol_found = re.search(
category_re[category].format(symbol), header_content
)
assert (
symbol_found
), f"{symbol} described as a {category} available in {header}, but cannot be found there"
def test_lint_includes(lint, paths):
results = lint(paths("correct_assert.h"))
assert not results
results = lint(paths("incorrect_assert.h"))
assert len(results) == 1
assert results[0].message.endswith(
"incorrect_assert.h includes Assertions.h but does not reference any of its API"
)
results = lint(paths("correct_literal.h"))
assert not results
results = lint(paths("incorrect_literal.h"))
assert len(results) == 1
assert results[0].message.endswith(
"incorrect_literal.h includes Literals.h but does not reference any of its API"
)
if __name__ == "__main__":
mozunit.main()
|
