urlpick_test.go

Documentation: go.etcd.io/etcd/server/v3/etcdserver/api/rafthttp

     1  // Copyright 2015 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package rafthttp
    16  
    17  import (
    18  	"net/url"
    19  	"testing"
    20  
    21  	"go.etcd.io/etcd/client/pkg/v3/testutil"
    22  )
    23  
    24  // TestURLPickerPickTwice tests that pick returns a possible url,
    25  // and always returns the same one.
    26  func TestURLPickerPickTwice(t *testing.T) {
    27  	picker := mustNewURLPicker(t, []string{"http://127.0.0.1:2380", "http://127.0.0.1:7001"})
    28  
    29  	u := picker.pick()
    30  	urlmap := map[url.URL]bool{
    31  		{Scheme: "http", Host: "127.0.0.1:2380"}: true,
    32  		{Scheme: "http", Host: "127.0.0.1:7001"}: true,
    33  	}
    34  	if !urlmap[u] {
    35  		t.Errorf("url picked = %+v, want a possible url in %+v", u, urlmap)
    36  	}
    37  
    38  	// pick out the same url when calling pick again
    39  	uu := picker.pick()
    40  	if u != uu {
    41  		t.Errorf("url picked = %+v, want %+v", uu, u)
    42  	}
    43  }
    44  
    45  func TestURLPickerUpdate(t *testing.T) {
    46  	picker := mustNewURLPicker(t, []string{"http://127.0.0.1:2380", "http://127.0.0.1:7001"})
    47  	picker.update(testutil.MustNewURLs(t, []string{"http://localhost:2380", "http://localhost:7001"}))
    48  
    49  	u := picker.pick()
    50  	urlmap := map[url.URL]bool{
    51  		{Scheme: "http", Host: "localhost:2380"}: true,
    52  		{Scheme: "http", Host: "localhost:7001"}: true,
    53  	}
    54  	if !urlmap[u] {
    55  		t.Errorf("url picked = %+v, want a possible url in %+v", u, urlmap)
    56  	}
    57  }
    58  
    59  func TestURLPickerUnreachable(t *testing.T) {
    60  	picker := mustNewURLPicker(t, []string{"http://127.0.0.1:2380", "http://127.0.0.1:7001"})
    61  	u := picker.pick()
    62  	picker.unreachable(u)
    63  
    64  	uu := picker.pick()
    65  	if u == uu {
    66  		t.Errorf("url picked = %+v, want other possible urls", uu)
    67  	}
    68  }
    69  
    70  func mustNewURLPicker(t *testing.T, us []string) *urlPicker {
    71  	urls := testutil.MustNewURLs(t, us)
    72  	return newURLPicker(urls)
    73  }
    74
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