github.com/anth0d/nomad@v0.0.0-20221214183521-ae3a0a2cad06/nomad/stream/ndjson_test.go (about)

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