add fuzz target for parsing key sequence

Author: rhysd

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "keybinds"
-version = "0.0.6"
+version = "0.0.7"
 edition = "2021"
 authors = ["rhysd <[email protected]>"]
 description = "Platform&Framework-agnostic key binding (keyboard shortcut) parser and dispatcher"

Cargo.toml

@@ -7,8 +7,12 @@ edition = "2021"
 [package.metadata]
 cargo-fuzz = true
 
+[features]
+default = []
+arbitrary = ["dep:arbitrary"]
+
 [dependencies]
-arbitrary = "1.4.1"
+arbitrary = { version = "1.4.1", optional = true }
 keybinds = { path = "..", features = ["arbitrary"] }
 libfuzzer-sys = "0.4"
 
@@ -18,3 +22,11 @@ path = "fuzz_targets/dispatch.rs"
 test = false
 doc = false
 bench = false
+required-features = ["arbitrary"]
+
+[[bin]]
+name = "parse"
+path = "fuzz_targets/parse.rs"
+test = false
+doc = false
+bench = false

fuzz/Cargo.toml

@@ -2,5 +2,8 @@ Fuzzing with [cargo-fuzz](https://rust-fuzz.github.io/book/introduction.html).
 
 ```sh
 # Fuzz dispatching key bindings with random key inputs
-cargo +nightly fuzz run dispatch
+cargo +nightly fuzz run dispatch --features=arbitrary
+
+# Fuzz parsing a key sequence like "Ctrl+X"
+cargo +nightly fuzz run parse
 ```

fuzz/README.md

@@ -0,0 +1,9 @@
+#![no_main]
+use keybinds::KeySeq;
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(s) = std::str::from_utf8(data) {
+        let _ = s.parse::<KeySeq>();
+    }
+});