ci: add fuzz tests to nightly run (#2787)

.github/workflows/nightly.yml

@@ -9,7 +9,7 @@ env:
   GO_VERSION: '1.21.1'
 
 jobs:
-  e2e-tests:
+  test-e2e:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -24,6 +24,17 @@ jobs:
         run: |
           mkdir -p $HOME/.kube
           echo "${KUBECONFIG_FILE}" > $HOME/.kube/config
-
       - name: Run e2e tests
         run: make test-e2e
+
+  test-fuzz:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Run fuzz tests
+        run: make test-fuzz

Makefile

@@ -141,6 +141,10 @@ test-coverage:
 	@export VERSION=$(VERSION); bash -x scripts/test_cover.sh
 .PHONY: test-coverage
 
+test-fuzz:
+	bash -x scripts/test_fuzz.sh
+.PHONY: test-fuzz
+
 ## txsim-install: Install the tx simulator.
 txsim-install:
 	@echo "--> Installing tx simulator"

scripts/test_fuzz.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -e
+
+echo "Running fuzz tests..."
+# manually specify the tests to fuzz since go toolchain doesn't support
+# fuzzing multiple packages with multiple fuzz tests
+go test -fuzz=FuzzNewInfoByte -fuzztime 1m ./pkg/shares
+go test -fuzz=FuzzValidSequenceLen -fuzztime 1m ./pkg/shares
+go test -fuzz=FuzzSquare -fuzztime 5m ./pkg/square
+go test -fuzz=FuzzPFBGasEstimation -fuzztime 3m ./x/blob/types