Add ci to auto-build and do simple smoke test

Author: jmrtsh

.github/workflows/ci.yml

@@ -0,0 +1,67 @@
+name: Integration Test
+
+on:
+  repository_dispatch:
+    types: [upstream-changed]
+  push:
+    branches: [kotlin]
+  pull_request:
+    branches: [kotlin]
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  integration-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Enable KVM
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+
+      - name: Install Rust
+        run: |
+          rustup install --no-self-update 1.87 1.89
+          rustup default 1.89
+          rustup target add x86_64-unknown-none
+
+      - name: Install clang
+        run: sudo apt-get install -y clang
+
+      - uses: extractions/setup-just@v2
+
+      - name: Install wasm-tools
+        run: cargo install --locked wasm-tools
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      # need this for the clones in the justfile to succeed
+      - name: Configure Git to use HTTPS instead of SSH
+        run: git config --global url."https://github.com/".insteadOf git@github.com:
+
+      - name: Build
+        run: just build
+
+      - name: Smoke test
+        run: |
+          just run &
+          SERVER_PID=$!
+          trap "kill $SERVER_PID 2>/dev/null || true" EXIT
+
+          for i in $(seq 1 30); do
+            if curl -s http://localhost:3000 > /dev/null 2>&1; then
+              break
+            fi
+            sleep 4
+          done
+
+          ./smokeTest.sh

smokeTest.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+url=${1:-"http://localhost:3000"}
+failures=0
+
+check() {
+  local desc=$1 pattern=$2
+  shift 2
+  if "$@" | grep -qi "$pattern"; then
+    echo "PASS: $desc"
+  else
+    echo "FAIL: $desc"
+    failures=$((failures + 1))
+  fi
+}
+
+check "GET / returns 200" "200" \
+  curl -s -o /dev/null -w '%{http_code}' "$url"
+
+check "POST /echo echoes body" "hola mundo" \
+  curl -s -d "hola mundo" "$url/echo"
+
+check "GET /echo-headers reflects custom header" "x-language: spanish" \
+  curl -s -I -H "x-language: spanish" "$url/echo-headers"
+
+check "GET /idontexist returns 404" "404" \
+  curl -s -o /dev/null -w '%{http_code}' "$url/idontexist"
+
+echo ""
+[ "$failures" -gt 0 ] && echo "$failures test(s) failed" && exit 1
+echo "All tests passed"