Add very basic step ca health integration test

command/ca/health_test.go

@@ -0,0 +1,99 @@
+package ca
+
+import (
+	"encoding/json"
+	"fmt"
+	"net"
+	"net/http"
+	"path/filepath"
+	"sync"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/urfave/cli"
+
+	"go.step.sm/crypto/minica"
+	"go.step.sm/crypto/pemutil"
+
+	"github.com/smallstep/certificates/authority/config"
+	stepca "github.com/smallstep/certificates/ca"
+)
+
+// reservePort "reserves" a TCP port by opening a listener on a random
+// port and immediately closing it. The port can then be assumed to be
+// available for running a server on.
+func reservePort(t *testing.T) (host, port string) {
+	t.Helper()
+	l, err := net.Listen("tcp", ":0")
+	require.NoError(t, err)
+
+	address := l.Addr().String()
+	err = l.Close()
+	require.NoError(t, err)
+
+	host, port, err = net.SplitHostPort(address)
+	require.NoError(t, err)
+
+	return
+}
+
+func Test_healthAction(t *testing.T) {
+	dir := t.TempDir()
+	m, err := minica.New(minica.WithName("Step Integration"))
+	require.NoError(t, err)
+
+	rootFilepath := filepath.Join(dir, "root.crt")
+	_, err = pemutil.Serialize(m.Root, pemutil.WithFilename(rootFilepath))
+	require.NoError(t, err)
+
+	intermediateCertFilepath := filepath.Join(dir, "intermediate.crt")
+	_, err = pemutil.Serialize(m.Intermediate, pemutil.WithFilename(intermediateCertFilepath))
+	require.NoError(t, err)
+
+	intermediateKeyFilepath := filepath.Join(dir, "intermediate.key")
+	_, err = pemutil.Serialize(m.Signer, pemutil.WithFilename(intermediateKeyFilepath))
+	require.NoError(t, err)
+
+	// get a random address to listen on and connect to; currently no nicer way to get one before starting the server
+	// TODO(hs): find/implement a nicer way to expose the CA URL, similar to how e.g. httptest.Server exposes it?
+	host, port := reservePort(t)
+
+	cfg := &config.Config{
+		Root:             []string{rootFilepath},
+		IntermediateCert: intermediateCertFilepath,
+		IntermediateKey:  intermediateKeyFilepath,
+		Address:          net.JoinHostPort(host, port), // reuse the address that was just "reserved"
+		DNSNames:         []string{"127.0.0.1", "[::1]", "localhost"},
+		AuthorityConfig: &config.AuthConfig{
+			AuthorityID:    "stepca-test",
+			DeploymentType: "standalone-test",
+		},
+		Logger: json.RawMessage(`{"format": "text"}`),
+	}
+	c, err := stepca.New(cfg)
+	require.NoError(t, err)
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	go func() {
+		defer wg.Done()
+		err = c.Run()
+		require.ErrorIs(t, err, http.ErrServerClosed)
+	}()
+
+	caCommand := cli.Command{Name: "ca"}
+	caCommand.Subcommands = []cli.Command{healthCommand()}
+
+	app := cli.NewApp()
+	app.Commands = cli.Commands{caCommand}
+	err = app.Run([]string{"step", "ca", "health", "--root", rootFilepath, "--ca-url", fmt.Sprintf("https://127.0.0.1:%s", port)})
+	assert.NoError(t, err)
+
+	// done testing; stop and wait for the server to quit
+	err = c.Stop()
+	require.NoError(t, err)
+
+	wg.Wait()
+}