github.com/xdlianrong208/docker-ce-comments@v17.12.1-ce-rc2+incompatible/components/engine/client/disk_usage_test.go (about)

     1  package client
     2  
     3  import (
     4  	"bytes"
     5  	"encoding/json"
     6  	"fmt"
     7  	"io/ioutil"
     8  	"net/http"
     9  	"strings"
    10  	"testing"
    11  
    12  	"github.com/docker/docker/api/types"
    13  	"golang.org/x/net/context"
    14  )
    15  
    16  func TestDiskUsageError(t *testing.T) {
    17  	client := &Client{
    18  		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
    19  	}
    20  	_, err := client.DiskUsage(context.Background())
    21  	if err == nil || err.Error() != "Error response from daemon: Server error" {
    22  		t.Fatalf("expected a Server Error, got %v", err)
    23  	}
    24  }
    25  
    26  func TestDiskUsage(t *testing.T) {
    27  	expectedURL := "/system/df"
    28  	client := &Client{
    29  		client: newMockClient(func(req *http.Request) (*http.Response, error) {
    30  			if !strings.HasPrefix(req.URL.Path, expectedURL) {
    31  				return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
    32  			}
    33  
    34  			du := types.DiskUsage{
    35  				LayersSize: int64(100),
    36  				Images:     nil,
    37  				Containers: nil,
    38  				Volumes:    nil,
    39  			}
    40  
    41  			b, err := json.Marshal(du)
    42  			if err != nil {
    43  				return nil, err
    44  			}
    45  
    46  			return &http.Response{
    47  				StatusCode: http.StatusOK,
    48  				Body:       ioutil.NopCloser(bytes.NewReader(b)),
    49  			}, nil
    50  		}),
    51  	}
    52  	if _, err := client.DiskUsage(context.Background()); err != nil {
    53  		t.Fatal(err)
    54  	}
    55  }