Whoops: add fuzzers code.

tor-consdiff/fuzz/.gitignore

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+
+target
+corpus
+artifacts

tor-consdiff/fuzz/Cargo.toml

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+
+[package]
+name = "tor-consdiff-fuzz"
+version = "0.0.0"
+authors = ["Automatically generated"]
+publish = false
+edition = "2018"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.3"
+
+[dependencies.tor-consdiff]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "compare_diffs"
+path = "fuzz_targets/compare_diffs.rs"
+test = false
+doc = false

tor-consdiff/fuzz/fuzz_targets/compare_diffs.rs

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+#![no_main]
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(s) = std::str::from_utf8(data) {
+        let parts:Vec<_> = s.splitn(2, "=====\n").collect();
+        if parts.len() == 2 {
+            let orig = parts[0];
+            let diff = parts[1];
+            let out1 = tor_consdiff::apply_diff_trivial(orig, diff);
+            let out2 = tor_consdiff::apply_diff(orig, diff, None);
+            // dbg!(&out1);
+            // dbg!(&out2);
+            assert_eq!(out1.is_err(), out2.is_err());
+            match (out1, out2) {
+                (Ok(a), Ok(b)) => assert_eq!(a.to_string(),b.to_string()),
+                (_, _) => (),
+            }
+        }
+    }
+});