Mock driver

.github/workflows/fuzz-nightly.yml

@@ -0,0 +1,47 @@
+name: Nightly fuzz
+
+on:
+  schedule:
+    # 03:00 UTC every day
+    - cron: "0 3 * * *"
+  workflow_dispatch:
+    inputs:
+      duration:
+        description: Seconds to run each target
+        default: "300"
+
+jobs:
+  fuzz:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        target:
+          - callouts
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust (nightly)
+        uses: dtolnay/rust-toolchain@nightly
+
+      - name: Install cargo-fuzz
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-fuzz
+
+      - name: Cache cargo
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: driver/fuzz
+
+      - name: Fuzz ${{ matrix.target }}
+        working-directory: driver/fuzz
+        run: cargo fuzz run ${{ matrix.target }} -- -max_total_time=${{ github.event.inputs.duration || '300' }}
+
+      - name: Upload crash artifacts
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: fuzz-artifacts-${{ matrix.target }}
+          path: driver/fuzz/artifacts/
+          if-no-files-found: ignore

.github/workflows/pr-checks.yml

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+name: PR checks
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust (stable, MSVC)
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: stable
+
+      - name: Install just
+        uses: taiki-e/install-action@v2
+        with:
+          tool: just
+
+      - name: Cache cargo
+        uses: Swatinem/rust-cache@v2
+
+      # `just test` runs:
+      #   - kext-interface-gen   (regenerate Go command fixture)
+      #   - test-protocol        (Rust protocol parsers + bounds regression tests)
+      #   - test-kext-interface  (Go <-> Rust differential on the .bin fixtures)
+      #   - test-driver          (host property tests against mock_wdk)
+      # None of these need the WDK / a kernel.
+      - name: Run tests
+        run: just test
+
+  # End-to-end simulation on Linux: the real driver over mock_wdk in the zf-sim
+  # daemon, driven by the real Go agent over a Unix domain socket. The agent
+  # spawns the daemon and exits with its pass/fail code. mixed_v4v6_parallel has
+  # no `dns` op, so the run stays offline and deterministic.
+  sim-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust (stable)
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: stable
+
+      - name: Install just
+        uses: taiki-e/install-action@v2
+        with:
+          tool: just
+
+      - name: Cache cargo
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: sim
+
+      - name: Sim unit tests
+        run: just sim-test
+
+      - name: Replay scenario end-to-end
+        run: |
+          just sim-emit-samples
+          timeout 300 just sim-scenario ./sim/scenarios/mixed_v4v6_parallel.cbor