feat: Add fuzzers for BTreeMap and MinHeap

.github/workflows/ci.yml

@@ -28,6 +28,7 @@ jobs:
           rustup default ${{ matrix.rust }}
           rustup component add rustfmt
           rustup component add clippy
+          rustup toolchain install nightly
 
       - name: Check Format
         run: cargo fmt --all -- --check
@@ -39,6 +40,11 @@ jobs:
         run: cargo test
         env:
           RUST_BACKTRACE: 1
+
+      - name: Build Fuzzers
+        run: |
+          cargo install cargo-fuzz
+          cargo +nightly fuzz build
 
   examples:
     runs-on: ubuntu-latest

fuzz/.gitignore

@@ -0,0 +1,4 @@
+target
+corpus
+artifacts
+coverage

fuzz/Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "ic-stable-structures-fuzz"
+version = "0.0.0"
+publish = false
+edition = "2021"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+arbitrary = {version = "1.3.0", features = ["derive"]}
+serde = {version = "1.0", features = ["derive"]}
+serde_bytes = "0.11"
+serde_cbor = "0.11.2"
+tempfile = "3.3.0"
+
+[dependencies.ic-stable-structures]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "stable_btreemap_multiple_ops_persistent"
+path = "fuzz_targets/stable_btreemap_multiple_ops_persistent.rs"
+test = false
+doc = false
+bench = false
+
+[[bin]]
+name = "stable_minheap_multiple_ops_persistent"
+path = "fuzz_targets/stable_minheap_multiple_ops_persistent.rs"
+test = false
+doc = false
+bench = false