aboutsummaryrefslogtreecommitdiff
path: root/vendor/memchr/src/tests/substring
diff options
context:
space:
mode:
authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/memchr/src/tests/substring
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/memchr/src/tests/substring')
-rw-r--r--vendor/memchr/src/tests/substring/mod.rs232
-rw-r--r--vendor/memchr/src/tests/substring/naive.rs45
-rw-r--r--vendor/memchr/src/tests/substring/prop.rs126
3 files changed, 0 insertions, 403 deletions
diff --git a/vendor/memchr/src/tests/substring/mod.rs b/vendor/memchr/src/tests/substring/mod.rs
deleted file mode 100644
index dd10cbd..0000000
--- a/vendor/memchr/src/tests/substring/mod.rs
+++ /dev/null
@@ -1,232 +0,0 @@
-/*!
-This module defines tests and test helpers for substring implementations.
-*/
-
-use alloc::{
- boxed::Box,
- format,
- string::{String, ToString},
-};
-
-pub(crate) mod naive;
-#[macro_use]
-pub(crate) mod prop;
-
-const SEEDS: &'static [Seed] = &[
- Seed::new("", "", Some(0), Some(0)),
- Seed::new("", "a", Some(0), Some(1)),
- Seed::new("", "ab", Some(0), Some(2)),
- Seed::new("", "abc", Some(0), Some(3)),
- Seed::new("a", "", None, None),
- Seed::new("a", "a", Some(0), Some(0)),
- Seed::new("a", "aa", Some(0), Some(1)),
- Seed::new("a", "ba", Some(1), Some(1)),
- Seed::new("a", "bba", Some(2), Some(2)),
- Seed::new("a", "bbba", Some(3), Some(3)),
- Seed::new("a", "bbbab", Some(3), Some(3)),
- Seed::new("a", "bbbabb", Some(3), Some(3)),
- Seed::new("a", "bbbabbb", Some(3), Some(3)),
- Seed::new("a", "bbbbbb", None, None),
- Seed::new("ab", "", None, None),
- Seed::new("ab", "a", None, None),
- Seed::new("ab", "b", None, None),
- Seed::new("ab", "ab", Some(0), Some(0)),
- Seed::new("ab", "aab", Some(1), Some(1)),
- Seed::new("ab", "aaab", Some(2), Some(2)),
- Seed::new("ab", "abaab", Some(0), Some(3)),
- Seed::new("ab", "baaab", Some(3), Some(3)),
- Seed::new("ab", "acb", None, None),
- Seed::new("ab", "abba", Some(0), Some(0)),
- Seed::new("abc", "ab", None, None),
- Seed::new("abc", "abc", Some(0), Some(0)),
- Seed::new("abc", "abcz", Some(0), Some(0)),
- Seed::new("abc", "abczz", Some(0), Some(0)),
- Seed::new("abc", "zabc", Some(1), Some(1)),
- Seed::new("abc", "zzabc", Some(2), Some(2)),
- Seed::new("abc", "azbc", None, None),
- Seed::new("abc", "abzc", None, None),
- Seed::new("abczdef", "abczdefzzzzzzzzzzzzzzzzzzzz", Some(0), Some(0)),
- Seed::new("abczdef", "zzzzzzzzzzzzzzzzzzzzabczdef", Some(20), Some(20)),
- Seed::new(
- "xyz",
- "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaxyz",
- Some(32),
- Some(32),
- ),
- Seed::new("\u{0}\u{15}", "\u{0}\u{15}\u{15}\u{0}", Some(0), Some(0)),
- Seed::new("\u{0}\u{1e}", "\u{1e}\u{0}", None, None),
-];
-
-/// Runs a host of substring search tests.
-///
-/// This has support for "partial" substring search implementations only work
-/// for a subset of needles/haystacks. For example, the "packed pair" substring
-/// search implementation only works for haystacks of some minimum length based
-/// of the pair of bytes selected and the size of the vector used.
-pub(crate) struct Runner {
- fwd: Option<
- Box<dyn FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static>,
- >,
- rev: Option<
- Box<dyn FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static>,
- >,
-}
-
-impl Runner {
- /// Create a new test runner for forward and reverse substring search
- /// implementations.
- pub(crate) fn new() -> Runner {
- Runner { fwd: None, rev: None }
- }
-
- /// Run all tests. This panics on the first failure.
- ///
- /// If the implementation being tested returns `None` for a particular
- /// haystack/needle combination, then that test is skipped.
- ///
- /// This runs tests on both the forward and reverse implementations given.
- /// If either (or both) are missing, then tests for that implementation are
- /// skipped.
- pub(crate) fn run(self) {
- if let Some(mut fwd) = self.fwd {
- for seed in SEEDS.iter() {
- for t in seed.generate() {
- match fwd(t.haystack.as_bytes(), t.needle.as_bytes()) {
- None => continue,
- Some(result) => {
- assert_eq!(
- t.fwd, result,
- "FORWARD, needle: {:?}, haystack: {:?}",
- t.needle, t.haystack,
- );
- }
- }
- }
- }
- }
- if let Some(mut rev) = self.rev {
- for seed in SEEDS.iter() {
- for t in seed.generate() {
- match rev(t.haystack.as_bytes(), t.needle.as_bytes()) {
- None => continue,
- Some(result) => {
- assert_eq!(
- t.rev, result,
- "REVERSE, needle: {:?}, haystack: {:?}",
- t.needle, t.haystack,
- );
- }
- }
- }
- }
- }
- }
-
- /// Set the implementation for forward substring search.
- ///
- /// If the closure returns `None`, then it is assumed that the given
- /// test cannot be applied to the particular implementation and it is
- /// skipped. For example, if a particular implementation only supports
- /// needles or haystacks for some minimum length.
- ///
- /// If this is not set, then forward substring search is not tested.
- pub(crate) fn fwd(
- mut self,
- search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static,
- ) -> Runner {
- self.fwd = Some(Box::new(search));
- self
- }
-
- /// Set the implementation for reverse substring search.
- ///
- /// If the closure returns `None`, then it is assumed that the given
- /// test cannot be applied to the particular implementation and it is
- /// skipped. For example, if a particular implementation only supports
- /// needles or haystacks for some minimum length.
- ///
- /// If this is not set, then reverse substring search is not tested.
- pub(crate) fn rev(
- mut self,
- search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static,
- ) -> Runner {
- self.rev = Some(Box::new(search));
- self
- }
-}
-
-/// A single substring test for forward and reverse searches.
-#[derive(Clone, Debug)]
-struct Test {
- needle: String,
- haystack: String,
- fwd: Option<usize>,
- rev: Option<usize>,
-}
-
-/// A single substring test for forward and reverse searches.
-///
-/// Each seed is valid on its own, but it also serves as a starting point
-/// to generate more tests. Namely, we pad out the haystacks with other
-/// characters so that we get more complete coverage. This is especially useful
-/// for testing vector algorithms that tend to have weird special cases for
-/// alignment and loop unrolling.
-///
-/// Padding works by assuming certain characters never otherwise appear in a
-/// needle or a haystack. Neither should contain a `#` character.
-#[derive(Clone, Copy, Debug)]
-struct Seed {
- needle: &'static str,
- haystack: &'static str,
- fwd: Option<usize>,
- rev: Option<usize>,
-}
-
-impl Seed {
- const MAX_PAD: usize = 34;
-
- const fn new(
- needle: &'static str,
- haystack: &'static str,
- fwd: Option<usize>,
- rev: Option<usize>,
- ) -> Seed {
- Seed { needle, haystack, fwd, rev }
- }
-
- fn generate(self) -> impl Iterator<Item = Test> {
- assert!(!self.needle.contains('#'), "needle must not contain '#'");
- assert!(!self.haystack.contains('#'), "haystack must not contain '#'");
- (0..=Seed::MAX_PAD)
- // Generate tests for padding at the beginning of haystack.
- .map(move |pad| {
- let needle = self.needle.to_string();
- let prefix = "#".repeat(pad);
- let haystack = format!("{}{}", prefix, self.haystack);
- let fwd = if needle.is_empty() {
- Some(0)
- } else {
- self.fwd.map(|i| pad + i)
- };
- let rev = if needle.is_empty() {
- Some(haystack.len())
- } else {
- self.rev.map(|i| pad + i)
- };
- Test { needle, haystack, fwd, rev }
- })
- // Generate tests for padding at the end of haystack.
- .chain((1..=Seed::MAX_PAD).map(move |pad| {
- let needle = self.needle.to_string();
- let suffix = "#".repeat(pad);
- let haystack = format!("{}{}", self.haystack, suffix);
- let fwd = if needle.is_empty() { Some(0) } else { self.fwd };
- let rev = if needle.is_empty() {
- Some(haystack.len())
- } else {
- self.rev
- };
- Test { needle, haystack, fwd, rev }
- }))
- }
-}
diff --git a/vendor/memchr/src/tests/substring/naive.rs b/vendor/memchr/src/tests/substring/naive.rs
deleted file mode 100644
index 1bc6009..0000000
--- a/vendor/memchr/src/tests/substring/naive.rs
+++ /dev/null
@@ -1,45 +0,0 @@
-/*!
-This module defines "naive" implementations of substring search.
-
-These are sometimes useful to compare with "real" substring implementations.
-The idea is that they are so simple that they are unlikely to be incorrect.
-*/
-
-/// Naively search forwards for the given needle in the given haystack.
-pub(crate) fn find(haystack: &[u8], needle: &[u8]) -> Option<usize> {
- let end = haystack.len().checked_sub(needle.len()).map_or(0, |i| i + 1);
- for i in 0..end {
- if needle == &haystack[i..i + needle.len()] {
- return Some(i);
- }
- }
- None
-}
-
-/// Naively search in reverse for the given needle in the given haystack.
-pub(crate) fn rfind(haystack: &[u8], needle: &[u8]) -> Option<usize> {
- let end = haystack.len().checked_sub(needle.len()).map_or(0, |i| i + 1);
- for i in (0..end).rev() {
- if needle == &haystack[i..i + needle.len()] {
- return Some(i);
- }
- }
- None
-}
-
-#[cfg(test)]
-mod tests {
- use crate::tests::substring;
-
- use super::*;
-
- #[test]
- fn forward() {
- substring::Runner::new().fwd(|h, n| Some(find(h, n))).run()
- }
-
- #[test]
- fn reverse() {
- substring::Runner::new().rev(|h, n| Some(rfind(h, n))).run()
- }
-}
diff --git a/vendor/memchr/src/tests/substring/prop.rs b/vendor/memchr/src/tests/substring/prop.rs
deleted file mode 100644
index a8352ec..0000000
--- a/vendor/memchr/src/tests/substring/prop.rs
+++ /dev/null
@@ -1,126 +0,0 @@
-/*!
-This module defines a few quickcheck properties for substring search.
-
-It also provides a forward and reverse macro for conveniently defining
-quickcheck tests that run these properties over any substring search
-implementation.
-*/
-
-use crate::tests::substring::naive;
-
-/// $fwd is a `impl FnMut(haystack, needle) -> Option<Option<usize>>`. When the
-/// routine returns `None`, then it's skipped, which is useful for substring
-/// implementations that don't work for all inputs.
-#[macro_export]
-macro_rules! define_substring_forward_quickcheck {
- ($fwd:expr) => {
- #[cfg(not(miri))]
- quickcheck::quickcheck! {
- fn qc_fwd_prefix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
- crate::tests::substring::prop::prefix_is_substring(&bs, $fwd)
- }
-
- fn qc_fwd_suffix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
- crate::tests::substring::prop::suffix_is_substring(&bs, $fwd)
- }
-
- fn qc_fwd_matches_naive(
- haystack: alloc::vec::Vec<u8>,
- needle: alloc::vec::Vec<u8>
- ) -> bool {
- crate::tests::substring::prop::same_as_naive(
- false,
- &haystack,
- &needle,
- $fwd,
- )
- }
- }
- };
-}
-
-/// $rev is a `impl FnMut(haystack, needle) -> Option<Option<usize>>`. When the
-/// routine returns `None`, then it's skipped, which is useful for substring
-/// implementations that don't work for all inputs.
-#[macro_export]
-macro_rules! define_substring_reverse_quickcheck {
- ($rev:expr) => {
- #[cfg(not(miri))]
- quickcheck::quickcheck! {
- fn qc_rev_prefix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
- crate::tests::substring::prop::prefix_is_substring(&bs, $rev)
- }
-
- fn qc_rev_suffix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
- crate::tests::substring::prop::suffix_is_substring(&bs, $rev)
- }
-
- fn qc_rev_matches_naive(
- haystack: alloc::vec::Vec<u8>,
- needle: alloc::vec::Vec<u8>
- ) -> bool {
- crate::tests::substring::prop::same_as_naive(
- true,
- &haystack,
- &needle,
- $rev,
- )
- }
- }
- };
-}
-
-/// Check that every prefix of the given byte string is a substring.
-pub(crate) fn prefix_is_substring(
- bs: &[u8],
- mut search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>>,
-) -> bool {
- for i in 0..bs.len().saturating_sub(1) {
- let prefix = &bs[..i];
- let result = match search(bs, prefix) {
- None => continue,
- Some(result) => result,
- };
- if !result.is_some() {
- return false;
- }
- }
- true
-}
-
-/// Check that every suffix of the given byte string is a substring.
-pub(crate) fn suffix_is_substring(
- bs: &[u8],
- mut search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>>,
-) -> bool {
- for i in 0..bs.len().saturating_sub(1) {
- let suffix = &bs[i..];
- let result = match search(bs, suffix) {
- None => continue,
- Some(result) => result,
- };
- if !result.is_some() {
- return false;
- }
- }
- true
-}
-
-/// Check that naive substring search matches the result of the given search
-/// algorithm.
-pub(crate) fn same_as_naive(
- reverse: bool,
- haystack: &[u8],
- needle: &[u8],
- mut search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>>,
-) -> bool {
- let result = match search(haystack, needle) {
- None => return true,
- Some(result) => result,
- };
- if reverse {
- result == naive::rfind(haystack, needle)
- } else {
- result == naive::find(haystack, needle)
- }
-}