80 lines
2.7 KiB
Rust
80 lines
2.7 KiB
Rust
use {
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anyhow::Result,
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regex::{RegexSet, RegexSetBuilder},
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regex_test::{CompiledRegex, RegexTest, TestResult, TestRunner},
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};
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/// Tests the default configuration of the hybrid NFA/DFA.
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#[test]
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fn default() -> Result<()> {
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let mut runner = TestRunner::new()?;
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runner
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.expand(&["is_match", "which"], |test| test.compiles())
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.blacklist_iter(super::BLACKLIST)
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.test_iter(crate::suite()?.iter(), compiler)
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.assert();
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Ok(())
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}
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fn run_test(re: &RegexSet, test: &RegexTest) -> TestResult {
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let hay = match std::str::from_utf8(test.haystack()) {
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Ok(hay) => hay,
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Err(err) => {
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return TestResult::fail(&format!(
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"haystack is not valid UTF-8: {}",
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err
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));
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}
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};
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match test.additional_name() {
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"is_match" => TestResult::matched(re.is_match(hay)),
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"which" => TestResult::which(re.matches(hay).iter()),
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name => TestResult::fail(&format!("unrecognized test name: {}", name)),
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}
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}
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/// Converts the given regex test to a closure that searches with a
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/// `bytes::Regex`. If the test configuration is unsupported, then a
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/// `CompiledRegex` that skips the test is returned.
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fn compiler(
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test: &RegexTest,
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_patterns: &[String],
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) -> anyhow::Result<CompiledRegex> {
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let skip = Ok(CompiledRegex::skip());
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// The top-level RegexSet API only supports "overlapping" semantics.
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if !matches!(test.search_kind(), regex_test::SearchKind::Overlapping) {
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return skip;
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}
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// The top-level RegexSet API only supports "all" semantics.
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if !matches!(test.match_kind(), regex_test::MatchKind::All) {
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return skip;
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}
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// The top-level RegexSet API always runs unanchored searches.
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if test.anchored() {
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return skip;
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}
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// We don't support tests with explicit search bounds.
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let bounds = test.bounds();
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if !(bounds.start == 0 && bounds.end == test.haystack().len()) {
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return skip;
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}
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// The Regex API specifically does not support disabling UTF-8 mode because
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// it can only search &str which is always valid UTF-8.
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if !test.utf8() {
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return skip;
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}
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// If the test requires Unicode but the Unicode feature isn't enabled,
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// skip it. This is a little aggressive, but the test suite doesn't
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// have any easy way of communicating which Unicode features are needed.
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if test.unicode() && !cfg!(feature = "unicode") {
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return skip;
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}
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let re = RegexSetBuilder::new(test.regexes())
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.case_insensitive(test.case_insensitive())
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.unicode(test.unicode())
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.line_terminator(test.line_terminator())
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.build()?;
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Ok(CompiledRegex::compiled(move |test| run_test(&re, test)))
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}
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