зеркало из https://github.com/golang/tools.git
82 строки
1.8 KiB
Go
82 строки
1.8 KiB
Go
// Copyright 2020 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package lsp
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import (
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"testing"
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"time"
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)
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func TestDebouncer(t *testing.T) {
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t.Parallel()
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type event struct {
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key string
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order uint64
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wantFired bool
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}
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tests := []struct {
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label string
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events []*event
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}{
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{
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label: "overridden",
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events: []*event{
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{key: "a", order: 1, wantFired: false},
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{key: "a", order: 2, wantFired: true},
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},
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},
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{
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label: "distinct labels",
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events: []*event{
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{key: "a", order: 1, wantFired: true},
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{key: "b", order: 2, wantFired: true},
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},
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},
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{
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label: "reverse order",
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events: []*event{
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{key: "a", order: 2, wantFired: true},
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{key: "a", order: 1, wantFired: false},
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},
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},
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{
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label: "multiple overrides",
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events: []*event{
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{key: "a", order: 1, wantFired: false},
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{key: "a", order: 2, wantFired: false},
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{key: "a", order: 3, wantFired: false},
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{key: "a", order: 4, wantFired: false},
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{key: "a", order: 5, wantFired: true},
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},
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},
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}
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for _, test := range tests {
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test := test
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t.Run(test.label, func(t *testing.T) {
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d := newDebouncer()
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delays := make([]chan time.Time, len(test.events))
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okcs := make([]<-chan bool, len(test.events))
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// Register the events in deterministic order, synchronously.
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for i, e := range test.events {
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delays[i] = make(chan time.Time, 1)
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okcs[i] = d.debounce(e.key, e.order, delays[i])
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}
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// Now see which event fired.
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for i, okc := range okcs {
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event := test.events[i]
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delays[i] <- time.Now()
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fired := <-okc
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if fired != event.wantFired {
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t.Errorf("[key: %q, order: %d]: fired = %t, want %t", event.key, event.order, fired, event.wantFired)
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}
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}
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})
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}
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}
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