github.com/zhouyu0/docker-note@v0.0.0-20190722021225-b8d3825084db/integration/container/stats_test.go (about)

     1  package container // import "github.com/docker/docker/integration/container"
     2  
     3  import (
     4  	"context"
     5  	"encoding/json"
     6  	"io"
     7  	"testing"
     8  	"time"
     9  
    10  	"github.com/docker/docker/api/types"
    11  	"github.com/docker/docker/integration/internal/container"
    12  	"gotest.tools/assert"
    13  	is "gotest.tools/assert/cmp"
    14  	"gotest.tools/poll"
    15  	"gotest.tools/skip"
    16  )
    17  
    18  func TestStats(t *testing.T) {
    19  	skip.If(t, !testEnv.DaemonInfo.MemoryLimit)
    20  
    21  	defer setupTest(t)()
    22  	client := testEnv.APIClient()
    23  	ctx := context.Background()
    24  
    25  	info, err := client.Info(ctx)
    26  	assert.NilError(t, err)
    27  
    28  	cID := container.Run(t, ctx, client)
    29  
    30  	poll.WaitOn(t, container.IsInState(ctx, client, cID, "running"), poll.WithDelay(100*time.Millisecond))
    31  
    32  	resp, err := client.ContainerStats(ctx, cID, false)
    33  	assert.NilError(t, err)
    34  	defer resp.Body.Close()
    35  
    36  	var v *types.Stats
    37  	err = json.NewDecoder(resp.Body).Decode(&v)
    38  	assert.NilError(t, err)
    39  	assert.Check(t, is.Equal(int64(v.MemoryStats.Limit), info.MemTotal))
    40  	err = json.NewDecoder(resp.Body).Decode(&v)
    41  	assert.Assert(t, is.ErrorContains(err, ""), io.EOF)
    42  }