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https://github.com/etcd-io/etcd.git
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dbe5198c45
While writing interaction tests for joint configuration changes, I realized that this wasn't working yet - restoring had no notion of the joint configuration and was simply dropping it on the floor. This commit introduces a helper `confchange.Restore` which takes a `ConfState` and initializes a `Tracker` from it. This is then used both in `(*raft).restore` as well as in `newRaft`.
59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
// Copyright 2019 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package raftpb
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import (
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"testing"
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)
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func TestConfState_Equivalent(t *testing.T) {
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type testCase struct {
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cs, cs2 ConfState
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ok bool
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}
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testCases := []testCase{
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// Reordered voters and learners.
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{ConfState{
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Voters: []uint64{1, 2, 3},
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Learners: []uint64{5, 4, 6},
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VotersOutgoing: []uint64{9, 8, 7},
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LearnersNext: []uint64{10, 20, 15},
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}, ConfState{
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Voters: []uint64{1, 2, 3},
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Learners: []uint64{4, 5, 6},
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VotersOutgoing: []uint64{7, 9, 8},
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LearnersNext: []uint64{20, 10, 15},
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}, true},
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// Not sensitive to nil vs empty slice.
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{ConfState{Voters: []uint64{}}, ConfState{Voters: []uint64(nil)}, true},
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// Non-equivalent voters.
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{ConfState{Voters: []uint64{1, 2, 3, 4}}, ConfState{Voters: []uint64{2, 1, 3}}, false},
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{ConfState{Voters: []uint64{1, 4, 3}}, ConfState{Voters: []uint64{2, 1, 3}}, false},
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// Non-equivalent learners.
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{ConfState{Voters: []uint64{1, 2, 3, 4}}, ConfState{Voters: []uint64{2, 1, 3}}, false},
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// Sensitive to AutoLeave flag.
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{ConfState{AutoLeave: true}, ConfState{}, false},
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}
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for _, tc := range testCases {
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t.Run("", func(t *testing.T) {
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if err := tc.cs.Equivalent(tc.cs2); (err == nil) != tc.ok {
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t.Fatalf("wanted error: %t, got:\n%s", tc.ok, err)
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}
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})
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}
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}
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