ci(end-to-end): test jazzer CLI across node versions

- before this, only jest was tested

Author: oetr

.github/workflows/run-all-tests-pr.yaml

@@ -107,6 +107,7 @@ jobs:
 
       # Run with different node.js versions
       # all in one job to avoid rebuilding
+      # each runtime executes both jest-runner and direct CLI smoke tests
       # Node 14 only has binaries for x64 runners
       - name: "node 14"
         if: matrix.os == 'ubuntu-latest' || matrix.os == 'windows-latest'
@@ -117,6 +118,10 @@ jobs:
         if: matrix.os == 'ubuntu-latest' || matrix.os == 'windows-latest'
         run: cd end-to-end && npx jest
         shell: bash
+      - name: run CLI smoke test (node 14)
+        if: matrix.os == 'ubuntu-latest' || matrix.os == 'windows-latest'
+        run: cd end-to-end && npm run fuzz:cli
+        shell: bash
 
       - name: "node 16"
         uses: actions/setup-node@v6
@@ -125,6 +130,9 @@ jobs:
       - name: run tests (node 16)
         run: cd end-to-end && npx jest
         shell: bash
+      - name: run CLI smoke test (node 16)
+        run: cd end-to-end && npm run fuzz:cli
+        shell: bash
 
       - name: "node 18"
         uses: actions/setup-node@v6
@@ -133,6 +141,9 @@ jobs:
       - name: run tests (node 18)
         run: cd end-to-end && npx jest
         shell: bash
+      - name: run CLI smoke test (node 18)
+        run: cd end-to-end && npm run fuzz:cli
+        shell: bash
 
       - name: "node 20"
         uses: actions/setup-node@v6
@@ -141,6 +152,9 @@ jobs:
       - name: run tests (node 20)
         run: cd end-to-end && npx jest
         shell: bash
+      - name: run CLI smoke test (node 20)
+        run: cd end-to-end && npm run fuzz:cli
+        shell: bash
 
       - name: "node 22"
         uses: actions/setup-node@v6
@@ -149,6 +163,9 @@ jobs:
       - name: run tests (node 22)
         run: cd end-to-end && npx jest
         shell: bash
+      - name: run CLI smoke test (node 22)
+        run: cd end-to-end && npm run fuzz:cli
+        shell: bash
 
       - name: "node 24"
         uses: actions/setup-node@v6
@@ -157,6 +174,9 @@ jobs:
       - name: run tests (node 24)
         run: cd end-to-end && npx jest
         shell: bash
+      - name: run CLI smoke test (node 24)
+        run: cd end-to-end && npm run fuzz:cli
+        shell: bash
   auto-merge:
     needs:
       - linting

end-to-end/cli-smoke.cjs

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2026 Code Intelligence GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+module.exports.fuzz = function fuzz(data) {
+	if (data.length > 1024) {
+		throw new Error("Unexpectedly large input");
+	}
+};

end-to-end/package.json

@@ -4,6 +4,7 @@
 	"scripts": {
 		"build": "tsc",
 		"dryRun": "jest",
+		"fuzz:cli": "jazzer cli-smoke.cjs --sync -- -runs=1 -seed=123456789",
 		"fuzz": "JAZZER_FUZZ=1 jest --coverage",
 		"coverage": "jest --coverage"
 	},