shark expose: put a local port on the internet through Hammerhead

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/cli/cli_test.go

@@ -0,0 +1,47 @@
+package cli
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"strings"
+	"testing"
+)
+
+func TestTarget(t *testing.T) {
+	for in, want := range map[string]string{"3000": "127.0.0.1:3000", ":8080": "127.0.0.1:8080", "db.lan:5432": "db.lan:5432", "[::1]:80": "::1:80"} {
+		h, p, err := target(in)
+		if err != nil || fmt.Sprintf("%s:%d", h, p) != want {
+			t.Errorf("%q -> %s:%d, %v", in, h, p, err)
+		}
+	}
+	for _, bad := range []string{"", "abc", "0", "70000", "host:"} {
+		if _, _, err := target(bad); err == nil {
+			t.Errorf("%q accepted", bad)
+		}
+	}
+}
+
+func TestUsageErrors(t *testing.T) {
+	t.Setenv("SHARK_CONFIG", t.TempDir()+"/none.json")
+	t.Setenv("SHARK_HAMMERHEAD", "")
+	t.Setenv("SHARK_TOKEN", "")
+	for name, args := range map[string][]string{
+		"no command":    {},
+		"unknown":       {"fly"},
+		"no port":       {"expose"},
+		"bad port":      {"expose", "abc"},
+		"bad proto":     {"expose", "udp", "5"},
+		"tcp password":  {"expose", "tcp", "5", "--password", "secret1"},
+		"not signed in": {"expose", "3000"},
+	} {
+		var out, errb bytes.Buffer
+		if code := Run(context.Background(), args, &out, &errb); code == 0 {
+			t.Errorf("%s: exit 0", name)
+		}
+	}
+	var out, errb bytes.Buffer
+	if code := Run(context.Background(), []string{"expose", "3000"}, &out, &errb); code == 0 || !strings.Contains(errb.String(), "shark login") {
+		t.Errorf("signed-out hint missing: %q", errb.String())
+	}
+}