feat(cli): scaffold uatu CLI with test and doctor subcommands

Wires the flag surface from plan §3 (--spec, --bundle-id, --platform,
--avd, --duration, --seed, --output). Subcommand bodies are stubs;
actual work lands with runner/doctor tasks.
This commit is contained in:
pj committed 2026-04-17 22:29:09 +07:00
1 parent d73192b235
commit 1c4b0dd00f
2 files changed
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package main
import (
"errors"
"flag"
"fmt"
"io"
"os"
"time"
)
type testOptions struct {
spec string
bundleID string
platform string
avd string
duration time.Duration
seed int64
output string
}
const topUsage = `uatu is a property-based UI fuzzer for mobile apps.
Usage:
uatu <command> [flags]
Commands:
test Run a spec against an app for a fixed duration.
doctor Check that the host environment is ready to run uatu.
Run "uatu <command> -h" for command-specific flags.
`
func parseTestArgs(args []string, stderr io.Writer) (testOptions, error) {
flagSet := flag.NewFlagSet("test", flag.ContinueOnError)
flagSet.SetOutput(stderr)
var options testOptions
flagSet.StringVar(&options.spec, "spec", "", "path to the TypeScript spec (required)")
flagSet.StringVar(&options.bundleID, "bundle-id", "", "target app bundle ID (required)")
flagSet.StringVar(&options.platform, "platform", "android", "target platform: android (ios deferred)")
flagSet.StringVar(&options.avd, "avd", "", "Android AVD name (required on android)")
flagSet.DurationVar(&options.duration, "duration", 5*time.Minute, "total test duration")
flagSet.Int64Var(&options.seed, "seed", 0, "RNG seed (0 = random)")
flagSet.StringVar(&options.output, "output", "./runs", "output directory for traces")
if err := flagSet.Parse(args); err != nil {
return testOptions{}, err
}
if options.spec == "" {
return testOptions{}, errors.New("--spec is required")
}
if options.bundleID == "" {
return testOptions{}, errors.New("--bundle-id is required")
}
if options.platform == "android" && options.avd == "" {
return testOptions{}, errors.New("--avd is required on android")
}
if options.platform != "android" {
return testOptions{}, fmt.Errorf("unsupported platform: %q (only android in v0.1)", options.platform)
}
return options, nil
}
func runTest(options testOptions, stdout io.Writer) error {
fmt.Fprintf(stdout, "uatu test (stub): %+v\n", options)
return nil
}
func runDoctor(stdout io.Writer) error {
fmt.Fprintln(stdout, "uatu doctor (stub): all checks pending implementation")
return nil
}
func run(args []string, stdout, stderr io.Writer) error {
if len(args) < 2 || args[1] == "-h" || args[1] == "--help" || args[1] == "help" {
fmt.Fprint(stdout, topUsage)
return nil
}
switch args[1] {
case "test":
options, err := parseTestArgs(args[2:], stderr)
if err != nil {
return err
}
return runTest(options, stdout)
case "doctor":
return runDoctor(stdout)
default:
return fmt.Errorf("unknown command: %q (try 'uatu help')", args[1])
}
}
func main() {
if err := run(os.Args, os.Stdout, os.Stderr); err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err)
os.Exit(1)
}
}
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package main
import (
"bytes"
"io"
"strings"
"testing"
"time"
)
func TestParseTestArgs_Defaults(t *testing.T) {
options, err := parseTestArgs([]string{
"--spec", "s.ts",
"--bundle-id", "com.example",
"--avd", "Pixel_5_API_33",
}, io.Discard)
if err != nil {
t.Fatal(err)
}
if options.spec != "s.ts" || options.bundleID != "com.example" {
t.Errorf("unexpected options: %+v", options)
}
if options.platform != "android" {
t.Errorf("platform default: got %q, want android", options.platform)
}
if options.duration != 5*time.Minute {
t.Errorf("duration default: got %v, want 5m", options.duration)
}
if options.output != "./runs" {
t.Errorf("output default: got %q, want ./runs", options.output)
}
if options.seed != 0 {
t.Errorf("seed default: got %d, want 0", options.seed)
}
}
func TestParseTestArgs_AllFlags(t *testing.T) {
options, err := parseTestArgs([]string{
"--spec", "s.ts",
"--bundle-id", "com.example",
"--platform", "android",
"--avd", "Pixel_5_API_33",
"--duration", "10m",
"--seed", "42",
"--output", "./out",
}, io.Discard)
if err != nil {
t.Fatal(err)
}
if options.avd != "Pixel_5_API_33" || options.duration != 10*time.Minute || options.seed != 42 || options.output != "./out" {
t.Errorf("unexpected options: %+v", options)
}
}
func TestParseTestArgs_RequiresSpec(t *testing.T) {
_, err := parseTestArgs([]string{"--bundle-id", "com.example", "--avd", "x"}, io.Discard)
if err == nil || !strings.Contains(err.Error(), "--spec") {
t.Fatalf("expected missing --spec error, got %v", err)
}
}
func TestParseTestArgs_RequiresBundleID(t *testing.T) {
_, err := parseTestArgs([]string{"--spec", "s.ts", "--avd", "x"}, io.Discard)
if err == nil || !strings.Contains(err.Error(), "--bundle-id") {
t.Fatalf("expected missing --bundle-id error, got %v", err)
}
}
func TestParseTestArgs_RequiresAVDOnAndroid(t *testing.T) {
_, err := parseTestArgs([]string{"--spec", "s.ts", "--bundle-id", "com.example"}, io.Discard)
if err == nil || !strings.Contains(err.Error(), "--avd") {
t.Fatalf("expected missing --avd error, got %v", err)
}
}
func TestParseTestArgs_RejectsNonAndroidPlatform(t *testing.T) {
_, err := parseTestArgs([]string{
"--spec", "s.ts",
"--bundle-id", "com.example",
"--platform", "ios",
"--avd", "x",
}, io.Discard)
if err == nil || !strings.Contains(err.Error(), "unsupported platform") {
t.Fatalf("expected unsupported-platform error, got %v", err)
}
}
func TestRun_HelpPrintsUsage(t *testing.T) {
var stdout bytes.Buffer
if err := run([]string{"uatu"}, &stdout, io.Discard); err != nil {
t.Fatal(err)
}
if !strings.Contains(stdout.String(), "uatu <command>") {
t.Errorf("usage missing, got: %q", stdout.String())
}
}
func TestRun_UnknownCommand(t *testing.T) {
err := run([]string{"uatu", "wat"}, io.Discard, io.Discard)
if err == nil || !strings.Contains(err.Error(), "unknown command") {
t.Fatalf("expected unknown-command error, got %v", err)
}
}
func TestRun_Doctor(t *testing.T) {
var stdout bytes.Buffer
if err := run([]string{"uatu", "doctor"}, &stdout, io.Discard); err != nil {
t.Fatal(err)
}
if !strings.Contains(stdout.String(), "doctor") {
t.Errorf("doctor output missing, got: %q", stdout.String())
}
}
func TestRun_TestSubcommand(t *testing.T) {
var stdout bytes.Buffer
err := run([]string{
"uatu", "test",
"--spec", "s.ts",
"--bundle-id", "com.example",
"--avd", "Pixel_5_API_33",
}, &stdout, io.Discard)
if err != nil {
t.Fatal(err)
}
if !strings.Contains(stdout.String(), "uatu test (stub)") {
t.Errorf("test stub output missing, got: %q", stdout.String())
}
}