98 lines
2.5 KiB
Go
98 lines
2.5 KiB
Go
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// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package priorityqueue
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import (
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"context"
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"sync"
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"testing"
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)
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func TestPriorityQueue(t *testing.T) {
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var results []string
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wg := sync.WaitGroup{}
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pq := New(3, 2)
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wg.Add(1)
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go pq.Run(context.Background(), func(v interface{}) {
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results = append(results, v.(string))
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wg.Done()
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})
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pq.Push(context.Background(), "2.0", 2)
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wg.Wait()
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if results[0] != "2.0" {
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t.Errorf("expected first result %q, got %q", "2.0", results[0])
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}
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Loop:
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for i, tc := range []struct {
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priorities []int
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values []string
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results []string
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errors []error
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}{
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{
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priorities: []int{0},
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values: []string{""},
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results: []string{""},
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},
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{
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priorities: []int{0, 1},
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values: []string{"0.0", "1.0"},
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results: []string{"1.0", "0.0"},
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},
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{
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priorities: []int{1, 0},
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values: []string{"1.0", "0.0"},
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results: []string{"1.0", "0.0"},
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},
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{
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priorities: []int{0, 1, 1},
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values: []string{"0.0", "1.0", "1.1"},
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results: []string{"1.0", "1.1", "0.0"},
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},
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{
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priorities: []int{0, 0, 0},
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values: []string{"0.0", "0.0", "0.1"},
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errors: []error{nil, nil, errContention},
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},
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} {
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var results []string
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wg := sync.WaitGroup{}
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pq := New(3, 2)
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wg.Add(len(tc.values))
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for j, value := range tc.values {
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err := pq.Push(nil, value, tc.priorities[j])
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if tc.errors != nil && err != tc.errors[j] {
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t.Errorf("expected push error %v, got %v", tc.errors[j], err)
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continue Loop
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}
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if err != nil {
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continue Loop
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}
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}
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go pq.Run(context.Background(), func(v interface{}) {
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results = append(results, v.(string))
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wg.Done()
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})
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wg.Wait()
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for k, result := range tc.results {
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if results[k] != result {
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t.Errorf("test case %v: expected %v element %q, got %q", i, k, result, results[k])
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}
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}
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}
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}
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