Add fuzz testing

Author: D4nte

.github/workflows/build.yml

@@ -44,3 +44,23 @@ jobs:
       - name: Test on Rust ${{ matrix.toolchain }}
         if: ${{ matrix.build-net-tokio }} != true
         run: RUSTFLAGS="-C link-dead-code" cargo test --verbose -p lightning
+
+  fuzz:
+    runs-on: ubuntu-latest
+    env:
+      TOOLCHAIN: stable
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v2
+      - name: Install Rust ${{ env.TOOLCHAIN }} toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ env.TOOLCHAIN }}
+          override: true
+          profile: minimal
+      - name: Install dependencies for honggfuzz
+        run: sudo apt install build-essential binutils-dev libunwind-dev
+      - name: Fuzz test on Rust ${{ matrix.TOOLCHAIN }}
+        run: cd fuzz && cargo test --verbose
+      - name: Generate fuzz report
+        run: cd fuzz && ./ci-fuzz.sh