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Have generate_tests.py generate Patterns inline in tests.rs

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This commit is contained in:
Noah
2021-04-01 22:05:45 -05:00
parent 2a43d66e11
commit ca1346ee03
6 changed files with 25 additions and 18 deletions
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21
generate_tests.py
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@@ -26,12 +26,21 @@ class CompiledPattern:
for k, v in re.RegexFlag.__members__.items():
setattr(CompiledPattern, k, v)
# matches `// pattern {varname} = re.compile(...)`
pattern_pattern = re.compile(r"^((\s*)\/\/\s*pattern\s+(\w+)\s+=\s+(.+?))$(?:.+?END GENERATED)?", re.M | re.S)
def replace_compiled(m):
line, indent, varname, pattern = m.groups()
pattern = eval(pattern, {"re": CompiledPattern})
pattern = f"Pattern {{ code: &{json.dumps(pattern.code)}, flags: SreFlag::from_bits_truncate({int(pattern.flags)}) }}"
return f'''{line}
{indent}// START GENERATED by generate_tests.py
{indent}#[rustfmt::skip] let {varname} = {pattern};
{indent}// END GENERATED'''
with os.scandir("tests") as d:
for f in d:
path = Path(f.path)
if path.suffix == ".py":
pattern = eval(path.read_text(), {"re": CompiledPattern})
path.with_suffix(".re").write_text(
f"// {pattern.pattern!r}, flags={pattern.flags!r}\n"
f"Pattern {{ code: &{json.dumps(pattern.code)}, flags: SreFlag::from_bits_truncate({int(pattern.flags)}) }}"
)
if path.suffix == ".rs":
replaced = pattern_pattern.sub(replace_compiled, path.read_text())
path.write_text(replaced)

1
tests/lookbehind.py
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@@ -1 +0,0 @@
re.compile(r'(?<!\.)x\b')

2
tests/lookbehind.re
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@@ -1,2 +0,0 @@
// '(?<!\\.)x\\b', flags=re.UNICODE
Pattern { code: &[15, 4, 0, 1, 1, 5, 5, 1, 17, 46, 1, 17, 120, 6, 10, 1], flags: SreFlag::from_bits_truncate(32) }

1
tests/positive_lookbehind.py
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@@ -1 +0,0 @@
re.compile(r'(?<=abc)def')

2
tests/positive_lookbehind.re
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@@ -1,2 +0,0 @@
// '(?<=abc)def', flags=re.UNICODE
Pattern { code: &[15, 4, 0, 3, 3, 4, 9, 3, 17, 97, 17, 98, 17, 99, 1, 17, 100, 17, 101, 17, 102, 1], flags: SreFlag::from_bits_truncate(32) }

16
tests/tests.rs
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@@ -18,18 +18,22 @@ impl Pattern {
#[test]
fn test_2427() {
// r'(?<!\.)x\b'
let pattern = include!("lookbehind.re");
let mut state = pattern.state("x", 0..usize::MAX);
// pattern lookbehind = re.compile(r'(?<!\.)x\b')
// START GENERATED by generate_tests.py
#[rustfmt::skip] let lookbehind = Pattern { code: &[15, 4, 0, 1, 1, 5, 5, 1, 17, 46, 1, 17, 120, 6, 10, 1], flags: SreFlag::from_bits_truncate(32) };
// END GENERATED
let mut state = lookbehind.state("x", 0..usize::MAX);
state = state.pymatch();
assert!(state.has_matched == Some(true));
}
#[test]
fn test_assert() {
// '(?<=abc)def', flags=re.UNICODE
let pattern = include!("positive_lookbehind.re");
let mut state = pattern.state("abcdef", 0..usize::MAX);
// pattern positive_lookbehind = re.compile(r'(?<=abc)def')
// START GENERATED by generate_tests.py
#[rustfmt::skip] let positive_lookbehind = Pattern { code: &[15, 4, 0, 3, 3, 4, 9, 3, 17, 97, 17, 98, 17, 99, 1, 17, 100, 17, 101, 17, 102, 1], flags: SreFlag::from_bits_truncate(32) };
// END GENERATED
let mut state = positive_lookbehind.state("abcdef", 0..usize::MAX);
state = state.search();
assert!(state.has_matched == Some(true));
}