add some simple integration tests (#15)

Author: skylenet

.github/workflows/integration-test.yml

@@ -0,0 +1,16 @@
+name: Integration Test
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Run integration tests
+      run: make test

Dockerfile

@@ -0,0 +1,20 @@
+FROM ubuntu:22.04
+
+# Install required packages
+RUN apt-get update && \
+    apt-get install -y \
+    net-tools \
+    iproute2 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy the script
+COPY check_netio.sh /usr/local/bin/check_netio.sh
+
+# Make it executable
+RUN chmod +x /usr/local/bin/check_netio.sh
+
+# Set working directory
+WORKDIR /usr/local/bin
+
+# Default command that runs basic test
+CMD ["./check_netio.sh", "-i", "eth0"]

Makefile

@@ -0,0 +1,23 @@
+.PHONY: build test test-basic test-error test-tcp test-legacy test-invalid
+
+IMAGE_NAME = check-netio
+
+build:
+	docker build -t $(IMAGE_NAME) .
+
+test-basic: build
+	docker run --network host $(IMAGE_NAME)
+
+test-error: build
+	docker run --network host $(IMAGE_NAME) ./check_netio.sh -i eth0 -e
+
+test-tcp: build
+	docker run --network host $(IMAGE_NAME) ./check_netio.sh -i eth0 -t
+
+test-legacy: build
+	docker run --network host $(IMAGE_NAME) ./check_netio.sh -i eth0 -l
+
+test-invalid: build
+	docker run --network host $(IMAGE_NAME) ./check_netio.sh -i eth999 || test $$? -eq 3
+
+test: test-basic test-error test-tcp test-legacy test-invalid