github.com/hernad/nomad@v1.6.112/nomad/stream/ndjson_test.go (about)

     1  // Copyright (c) HashiCorp, Inc.
     2  // SPDX-License-Identifier: MPL-2.0
     3  
     4  package stream
     5  
     6  import (
     7  	"context"
     8  	"testing"
     9  	"time"
    10  
    11  	"github.com/hernad/nomad/ci"
    12  	"github.com/stretchr/testify/require"
    13  )
    14  
    15  type testObj struct {
    16  	Name string `json:"name"`
    17  }
    18  
    19  func TestJsonStream(t *testing.T) {
    20  	ci.Parallel(t)
    21  
    22  	ctx, cancel := context.WithCancel(context.Background())
    23  	defer cancel()
    24  
    25  	s := NewJsonStream(ctx, 1*time.Second)
    26  	out := s.OutCh()
    27  
    28  	require.NoError(t, s.Send(testObj{Name: "test"}))
    29  
    30  	initialHeartbeat := <-out
    31  	require.Equal(t, []byte(`{}`), initialHeartbeat.Data)
    32  
    33  	testMessage1 := <-out
    34  	require.Equal(t, []byte(`{"name":"test"}`), testMessage1.Data)
    35  
    36  	select {
    37  	case msg := <-out:
    38  		require.Failf(t, "Did not expect another message", "%#v", msg)
    39  	case <-time.After(100 * time.Millisecond):
    40  	}
    41  
    42  	require.NoError(t, s.Send(testObj{Name: "test2"}))
    43  
    44  	testMessage2 := <-out
    45  	require.Equal(t, []byte(`{"name":"test2"}`), testMessage2.Data)
    46  }
    47  
    48  func TestJson_Send_After_Stop(t *testing.T) {
    49  	ci.Parallel(t)
    50  
    51  	ctx, cancel := context.WithCancel(context.Background())
    52  	defer cancel()
    53  
    54  	s := NewJsonStream(ctx, 1*time.Second)
    55  
    56  	// stop the stream
    57  	cancel()
    58  
    59  	time.Sleep(10 * time.Millisecond)
    60  	require.Error(t, s.Send(testObj{}))
    61  }
    62  
    63  func TestJson_HeartBeat(t *testing.T) {
    64  	ci.Parallel(t)
    65  
    66  	ctx, cancel := context.WithCancel(context.Background())
    67  	defer cancel()
    68  
    69  	s := NewJsonStream(ctx, 10*time.Millisecond)
    70  
    71  	out := s.OutCh()
    72  	heartbeat := <-out
    73  
    74  	require.Equal(t, JsonHeartbeat, heartbeat)
    75  }