snapshot of https://github.com/nats-io/nats-server.git (main, 2026-09-15; blobs > 131072B omitted)

server/ring_test.go

@@ -0,0 +1,76 @@
+// Copyright 2018 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestRBAppendAndLenAndTotal(t *testing.T) {
+	rb := newClosedRingBuffer(10)
+	for i := 0; i < 5; i++ {
+		rb.append(&closedClient{})
+	}
+	if rbl := rb.len(); rbl != 5 {
+		t.Fatalf("Expected len of 5, got %d", rbl)
+	}
+	if rbt := rb.totalConns(); rbt != 5 {
+		t.Fatalf("Expected total of 5, got %d", rbt)
+	}
+	for i := 0; i < 25; i++ {
+		rb.append(&closedClient{})
+	}
+	if rbl := rb.len(); rbl != 10 {
+		t.Fatalf("Expected len of 10, got %d", rbl)
+	}
+	if rbt := rb.totalConns(); rbt != 30 {
+		t.Fatalf("Expected total of 30, got %d", rbt)
+	}
+}
+
+func (cc *closedClient) String() string {
+	return cc.user
+}
+
+func TestRBclosedClients(t *testing.T) {
+	rb := newClosedRingBuffer(10)
+
+	var ui int
+	addConn := func() {
+		ui++
+		rb.append(&closedClient{user: fmt.Sprintf("%d", ui)})
+	}
+
+	max := 100
+	master := make([]*closedClient, 0, max)
+	for i := 1; i <= max; i++ {
+		master = append(master, &closedClient{user: fmt.Sprintf("%d", i)})
+	}
+
+	testList := func(i int) {
+		ccs := rb.closedClients()
+		start := int(rb.totalConns()) - len(ccs)
+		ms := master[start : start+len(ccs)]
+		if !reflect.DeepEqual(ccs, ms) {
+			t.Fatalf("test %d: List result did not match master: %+v vs %+v", i, ccs, ms)
+		}
+	}
+
+	for i := 0; i < max; i++ {
+		addConn()
+		testList(i)
+	}
+}