Add fuzzers

fuzz/.gitignore

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+
+target
+libfuzzer

fuzz/Cargo.toml

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+
+[package]
+name = "unicode-segmentation-fuzz"
+version = "0.0.1"
+authors = ["Automatically generated"]
+
+[dependencies.unicode-segmentation]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "graphemes"
+path = "fuzzers/graphemes.rs"
+
+[[bin]]
+name = "words"
+path = "fuzzers/words.rs"
+
+[[bin]]
+name = "equality"
+path = "fuzzers/equality.rs"

fuzz/fuzzers/equality.rs

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+#![no_main]
+
+extern crate libfuzzer_sys;
+extern crate unicode_segmentation;
+use std::str;
+use unicode_segmentation::UnicodeSegmentation;
+#[export_name="rust_fuzzer_test_input"]
+pub extern fn go(data: &[u8]) {
+    if let Ok(s) = str::from_utf8(data) {
+        let result = UnicodeSegmentation::graphemes(s, true).flat_map(|s| s.chars()).collect::<String>();
+        assert_eq!(s, result);
+        let result = s.split_word_bounds().flat_map(|s| s.chars()).collect::<String>();
+        assert_eq!(s, result);
+
+    }
+}

fuzz/fuzzers/graphemes.rs

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+#![no_main]
+
+
+extern crate libfuzzer_sys;
+
+
+extern crate unicode_segmentation;
+
+use unicode_segmentation::UnicodeSegmentation;
+use std::str;
+
+
+#[export_name="rust_fuzzer_test_input"]
+pub extern fn go(data: &[u8]) {
+    if let Ok(s) = str::from_utf8(data) {
+		let g = UnicodeSegmentation::graphemes(s, true).collect::<Vec<_>>();
+		assert!(UnicodeSegmentation::graphemes(s, true).rev().eq(g.iter().rev().cloned()));
+	}
+}

fuzz/fuzzers/words.rs

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+#![no_main]
+
+
+extern crate libfuzzer_sys;
+
+
+extern crate unicode_segmentation;
+
+use unicode_segmentation::UnicodeSegmentation;
+use std::str;
+
+
+#[export_name="rust_fuzzer_test_input"]
+pub extern fn go(data: &[u8]) {
+    if let Ok(s) = str::from_utf8(data) {
+        let g = s.split_word_bounds().collect::<Vec<_>>();
+        assert!(s.split_word_bounds().rev().eq(g.iter().rev().cloned()));
+    }
+}