create the json-depth-checker crate

json-depth-checker/fuzz/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "json-depth-checker"
+version = "0.0.0"
+authors = ["Automatically generated"]
+publish = false
+edition = "2018"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+arbitrary-json = "0.1.1"
+serde_json = "1.0.79"
+
+[dependencies.json-depth-checker]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "depth"
+path = "fuzz_targets/depth.rs"
+test = false
+doc = false

json-depth-checker/fuzz/fuzz_targets/depth.rs

@@ -0,0 +1,13 @@
+#![no_main]
+use arbitrary_json::ArbitraryValue;
+use json_depth_checker::*;
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|value: ArbitraryValue| {
+    let value = serde_json::Value::from(value);
+    let left = should_flatten_from_value(&value);
+    let value = serde_json::to_vec(&value).unwrap();
+    let right = should_flatten_from_unchecked_slice(&value);
+
+    assert_eq!(left, right);
+});