feat(tls): add optional nginx setup and gateway preview

backend/internal/nginxsetup/setup_test.go

@@ -0,0 +1,39 @@
+package nginxsetup
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestReleaseSelectsOnlySupportedPackageCommands(t *testing.T) {
+	for _, tc := range []struct{ raw, manager, install string }{
+		{"NAME=Ubuntu\nID=ubuntu\nVERSION_ID=24.04\n", "apt-get", "apt-get install -y nginx certbot"},
+		{"NAME=\"TencentOS Server\"\nVERSION=\"4\"\nID=tencentos\nVERSION_ID=\"4\"\n", "dnf", "dnf install -y nginx certbot"},
+		{"ID=tencentos\nVERSION_ID=3\n", "", ""},
+		{"ID=debian\nVERSION_ID=12\n", "", ""},
+	} {
+		id, version := ParseOSRelease(tc.raw)
+		pm, commands := Plan(id, version)
+		if pm != tc.manager {
+			t.Errorf("%s: package manager %q", id, pm)
+		}
+		if tc.install != "" {
+			got := strings.Join(commands[len(commands)-1], " ")
+			if got != tc.install {
+				t.Errorf("%s: install command %q", id, got)
+			}
+		} else if len(commands) != 0 {
+			t.Errorf("%s should be unsupported", id)
+		}
+	}
+}
+
+func TestOnlyOneInitializationAtATime(t *testing.T) {
+	if !Begin() {
+		t.Fatal("first initialization rejected")
+	}
+	defer End()
+	if Begin() {
+		t.Fatal("concurrent initialization accepted")
+	}
+}