get.pme.sh/pnats@v0.0.0-20240304004023-26bb5a137ed0/server/ring_test.go (about)

     1  // Copyright 2018 The NATS Authors
     2  // Licensed under the Apache License, Version 2.0 (the "License");
     3  // you may not use this file except in compliance with the License.
     4  // You may obtain a copy of the License at
     5  //
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package server
    15  
    16  import (
    17  	"fmt"
    18  	"reflect"
    19  	"testing"
    20  )
    21  
    22  func TestRBAppendAndLenAndTotal(t *testing.T) {
    23  	rb := newClosedRingBuffer(10)
    24  	for i := 0; i < 5; i++ {
    25  		rb.append(&closedClient{})
    26  	}
    27  	if rbl := rb.len(); rbl != 5 {
    28  		t.Fatalf("Expected len of 5, got %d", rbl)
    29  	}
    30  	if rbt := rb.totalConns(); rbt != 5 {
    31  		t.Fatalf("Expected total of 5, got %d", rbt)
    32  	}
    33  	for i := 0; i < 25; i++ {
    34  		rb.append(&closedClient{})
    35  	}
    36  	if rbl := rb.len(); rbl != 10 {
    37  		t.Fatalf("Expected len of 10, got %d", rbl)
    38  	}
    39  	if rbt := rb.totalConns(); rbt != 30 {
    40  		t.Fatalf("Expected total of 30, got %d", rbt)
    41  	}
    42  }
    43  
    44  func (cc *closedClient) String() string {
    45  	return cc.user
    46  }
    47  
    48  func TestRBclosedClients(t *testing.T) {
    49  	rb := newClosedRingBuffer(10)
    50  
    51  	var ui int
    52  	addConn := func() {
    53  		ui++
    54  		rb.append(&closedClient{user: fmt.Sprintf("%d", ui)})
    55  	}
    56  
    57  	max := 100
    58  	master := make([]*closedClient, 0, max)
    59  	for i := 1; i <= max; i++ {
    60  		master = append(master, &closedClient{user: fmt.Sprintf("%d", i)})
    61  	}
    62  
    63  	testList := func(i int) {
    64  		ccs := rb.closedClients()
    65  		start := int(rb.totalConns()) - len(ccs)
    66  		ms := master[start : start+len(ccs)]
    67  		if !reflect.DeepEqual(ccs, ms) {
    68  			t.Fatalf("test %d: List result did not match master: %+v vs %+v", i, ccs, ms)
    69  		}
    70  	}
    71  
    72  	for i := 0; i < max; i++ {
    73  		addConn()
    74  		testList(i)
    75  	}
    76  }