mirror of https://github.com/mum4k/termdash.git
124 lines
2.8 KiB
Go
124 lines
2.8 KiB
Go
// Copyright 2018 Google Inc.
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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 eventqueue
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import (
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"context"
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"testing"
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"time"
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"github.com/kylelemons/godebug/pretty"
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"github.com/mum4k/termdash/terminalapi"
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)
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func TestQueue(t *testing.T) {
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tests := []struct {
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desc string
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pushes []terminalapi.Event
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wantEmpty bool // Checked after pushes and before pops.
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wantPops []terminalapi.Event
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}{
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{
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desc: "empty queue returns nil",
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wantEmpty: true,
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wantPops: []terminalapi.Event{
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nil,
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},
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},
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{
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desc: "queue is FIFO",
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pushes: []terminalapi.Event{
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terminalapi.NewError("error1"),
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terminalapi.NewError("error2"),
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terminalapi.NewError("error3"),
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},
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wantEmpty: false,
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wantPops: []terminalapi.Event{
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terminalapi.NewError("error1"),
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terminalapi.NewError("error2"),
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terminalapi.NewError("error3"),
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nil,
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},
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},
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}
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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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q := New()
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defer q.Close()
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for _, ev := range tc.pushes {
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q.Push(ev)
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}
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gotEmpty := q.Empty()
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if gotEmpty != tc.wantEmpty {
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t.Errorf("Empty => got %v, want %v", gotEmpty, tc.wantEmpty)
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}
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for i, want := range tc.wantPops {
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got := q.Pop()
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if diff := pretty.Compare(want, got); diff != "" {
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t.Errorf("Pop[%d] => unexpected diff (-want, +got):\n%s", i, diff)
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}
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}
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})
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}
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}
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func TestPullEventAvailable(t *testing.T) {
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q := New()
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defer q.Close()
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want := terminalapi.NewError("error event")
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q.Push(want)
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ctx := context.Background()
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got, err := q.Pull(ctx)
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if err != nil {
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t.Fatalf("Pull => unexpected error: %v", err)
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}
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if diff := pretty.Compare(want, got); diff != "" {
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t.Errorf("Pull => unexpected diff (-want, +got):\n%s", diff)
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}
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}
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func TestPullBlocksUntilAvailable(t *testing.T) {
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q := New()
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defer q.Close()
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want := terminalapi.NewError("error event")
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ch := make(chan struct{})
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go func() {
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<-ch
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q.Push(want)
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}()
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ctx, cancel := context.WithTimeout(context.Background(), 1*time.Millisecond)
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defer cancel()
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if _, err := q.Pull(ctx); err == nil {
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t.Fatal("Pull => expected timeout error, got nil")
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}
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close(ch)
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got, err := q.Pull(context.Background())
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if err != nil {
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t.Fatalf("Pull => unexpected error: %v", err)
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}
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if diff := pretty.Compare(want, got); diff != "" {
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t.Errorf("Pull => unexpected diff (-want, +got):\n%s", diff)
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}
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}
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