fix(ios): replace LaunchApp with BootedUDID; simctl launch moved to XCTest path

internal/ios/ios.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"os"
 	"os/exec"
 	"strings"
 	"time"
@@ -55,18 +54,13 @@ func EnsureSimulator(ctx context.Context, deviceName string, stdout io.Writer) e
 	return nil
 }
 
-func LaunchApp(ctx context.Context, bundleID string, env map[string]string) error {
+// BootedUDID returns the UDID of the currently booted iOS simulator, or "" if none is booted.
-	args := []string{"simctl", "launch", "--terminate-running-process", "booted", bundleID}
+func BootedUDID(ctx context.Context) string {
-	cmd := exec.CommandContext(ctx, "xcrun", args...)
+	d, _ := bootedSimulator(ctx)
-	cmd.Env = os.Environ()
+	if d == nil {
-	for k, v := range env {
+		return ""
-		cmd.Env = append(cmd.Env, "SIMCTL_CHILD_"+k+"="+v)
 	}
-	out, err := cmd.CombinedOutput()
+	return d.UDID
-	if err != nil {
-		return fmt.Errorf("launch %s: %w\n%s", bundleID, err, strings.TrimSpace(string(out)))
-	}
-	return nil
 }
 
 func bootedSimulator(ctx context.Context) (*simDevice, error) {

internal/ios/ios_test.go

@@ -0,0 +1,89 @@
+package ios
+
+import (
+	"context"
+	"testing"
+)
+
+func TestPickSimulator_ByName(t *testing.T) {
+	available := []simDevice{
+		{UDID: "aaa", Name: "iPad Pro", IsAvailable: true},
+		{UDID: "bbb", Name: "iPhone 15", IsAvailable: true},
+	}
+	got, err := pickSimulator("iPhone 15", available)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.UDID != "bbb" {
+		t.Errorf("got %q, want bbb", got.UDID)
+	}
+}
+
+func TestPickSimulator_ByUDID(t *testing.T) {
+	available := []simDevice{
+		{UDID: "aaa", Name: "iPad Pro", IsAvailable: true},
+		{UDID: "bbb", Name: "iPhone 14", IsAvailable: true},
+	}
+	got, err := pickSimulator("aaa", available)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.Name != "iPad Pro" {
+		t.Errorf("got %q, want iPad Pro", got.Name)
+	}
+}
+
+func TestPickSimulator_UnknownName(t *testing.T) {
+	available := []simDevice{
+		{UDID: "aaa", Name: "iPad Pro", IsAvailable: true},
+	}
+	_, err := pickSimulator("Pixel 7", available)
+	if err == nil {
+		t.Fatal("expected error for unknown simulator name")
+	}
+}
+
+func TestPickSimulator_EmptyName_PrefersIPhone(t *testing.T) {
+	available := []simDevice{
+		{UDID: "aaa", Name: "iPad mini", IsAvailable: true},
+		{UDID: "bbb", Name: "iPhone 16", IsAvailable: true},
+		{UDID: "ccc", Name: "Apple Watch", IsAvailable: true},
+	}
+	got, err := pickSimulator("", available)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.UDID != "bbb" {
+		t.Errorf("got %q, want bbb (iPhone)", got.UDID)
+	}
+}
+
+func TestPickSimulator_EmptyName_FallsBackToFirst(t *testing.T) {
+	available := []simDevice{
+		{UDID: "aaa", Name: "iPad Air", IsAvailable: true},
+		{UDID: "bbb", Name: "Apple TV", IsAvailable: true},
+	}
+	got, err := pickSimulator("", available)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.UDID != "aaa" {
+		t.Errorf("got %q, want aaa (first available)", got.UDID)
+	}
+}
+
+func TestPickSimulator_EmptyList(t *testing.T) {
+	_, err := pickSimulator("", nil)
+	if err == nil {
+		t.Fatal("expected error for empty simulator list")
+	}
+}
+
+func TestBootedUDID_CanceledContext(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	udid := BootedUDID(ctx)
+	if udid != "" {
+		t.Errorf("expected empty UDID on canceled context, got %q", udid)
+	}
+}