Add tests (#3)

.github/workflows/ci.yaml

@@ -0,0 +1,16 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: tests/test.sh

tests/test.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+script_dir=$(dirname "$0")
+readonly script_dir
+
+cd "$script_dir/.."
+
+machine_cpus=$(grep -c processor /proc/cpuinfo)
+
+docker_cmd=(docker run --rm -v "${PWD}:${PWD}" -w "${PWD}" -e VERBOSE -e DEBUG)
+
+function expect() {
+  local expected="$1"
+  local input
+  input=$(cat /dev/stdin)
+
+  if [ "$input" == "$expected" ]; then
+    echo "Test passed" >&2
+  else
+    echo "Test failed" >&2
+    echo "Expected: $expected" >&2
+    echo "Got: $input" >&2
+    exit 1
+  fi
+}
+
+"${docker_cmd[@]}" alpine ./get_cpus.sh | expect "$machine_cpus"
+
+"${docker_cmd[@]}" ubuntu ./get_cpus.sh | expect "$machine_cpus"
+
+"${docker_cmd[@]}" --cpus 2 alpine ./get_cpus.sh | expect 2
+
+"${docker_cmd[@]}" --cpus 0.5 alpine ./get_cpus.sh | expect 1
+
+"${docker_cmd[@]}" --cpus 1.5 alpine ./get_cpus.sh | expect 1
+
+machine_memory=$(grep MemTotal /proc/meminfo | awk '{print $2}')
+machine_memory=$((machine_memory / 1024))
+
+"${docker_cmd[@]}" alpine ./get_memory.sh | expect "$machine_memory"
+
+"${docker_cmd[@]}" ubuntu ./get_memory.sh | expect "$machine_memory"
+
+"${docker_cmd[@]}" --memory 500mb alpine ./get_memory.sh | expect 500
+
+"${docker_cmd[@]}" --memory 500mb ubuntu ./get_memory.sh | expect 500
+
+"${docker_cmd[@]}" --memory 1g alpine ./get_memory.sh | expect 1024