feat: add reusable proxy configuration

internal/ui/shell_test.go

@@ -3,6 +3,7 @@ package ui
 import (
 	"context"
 	"path/filepath"
+	"strings"
 	"sync/atomic"
 	"testing"
 	"time"
@@ -443,3 +444,40 @@ func TestShellRequestsDiscardConfirmationForDirtyEdit(t *testing.T) {
 		t.Fatalf("dirty edit cancellation state = discard %v editing %q", shell.pendingEditDiscard, shell.editingID)
 	}
 }
+
+func TestShellCreatesAndEditsInstanceProxySelection(t *testing.T) {
+	shell := NewShell(material.NewTheme())
+	shell.SetProxies([]ProxyOption{{ID: "proxy-sg", Name: "新加坡", Server: "http://127.0.0.1:8080"}})
+	shell.instanceName.SetText("新实例")
+	shell.instanceDir.SetText(t.TempDir())
+	shell.createProxyID = "proxy-sg"
+	shell.createInstanceFromForm()
+	created := shell.rows[len(shell.rows)-1]
+	if created.ProxyID != "proxy-sg" {
+		t.Fatalf("created proxy id = %q", created.ProxyID)
+	}
+	shell.beginEdit(created.ID)
+	shell.editProxyID = ""
+	shell.saveEdit()
+	row, ok := shell.instanceRow(created.ID)
+	if !ok || row.ProxyID != "" {
+		t.Fatalf("edited proxy row = %#v", row)
+	}
+}
+
+func TestShellPreventsDeletingReferencedProxy(t *testing.T) {
+	shell := NewShell(material.NewTheme())
+	shell.SetProxies([]ProxyOption{{ID: "proxy-sg", Name: "新加坡", Server: "http://127.0.0.1:8080"}})
+	shell.rows[0].ProxyID = "proxy-sg"
+	changes := 0
+	shell.OnProxiesChanged(func([]ProxyOption) { changes++ })
+	shell.deleteProxy("proxy-sg")
+	if len(shell.proxies) != 1 || changes != 0 || !strings.Contains(shell.proxyFeedback, "不能删除") {
+		t.Fatalf("referenced delete state = proxies %#v, changes %d, feedback %q", shell.proxies, changes, shell.proxyFeedback)
+	}
+	shell.rows[0].ProxyID = ""
+	shell.deleteProxy("proxy-sg")
+	if len(shell.proxies) != 0 || changes != 1 {
+		t.Fatalf("unreferenced delete state = proxies %#v, changes %d", shell.proxies, changes)
+	}
+}