github.com/docker/docker@v299999999.0.0-20200612211812-aaf470eca7b5+incompatible/client/info_test.go (about)

     1  package client // import "github.com/docker/docker/client"
     2  
     3  import (
     4  	"bytes"
     5  	"context"
     6  	"encoding/json"
     7  	"fmt"
     8  	"io/ioutil"
     9  	"net/http"
    10  	"strings"
    11  	"testing"
    12  
    13  	"github.com/docker/docker/api/types"
    14  	"github.com/docker/docker/errdefs"
    15  )
    16  
    17  func TestInfoServerError(t *testing.T) {
    18  	client := &Client{
    19  		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
    20  	}
    21  	_, err := client.Info(context.Background())
    22  	if !errdefs.IsSystem(err) {
    23  		t.Fatalf("expected a Server Error, got %[1]T: %[1]v", err)
    24  	}
    25  }
    26  
    27  func TestInfoInvalidResponseJSONError(t *testing.T) {
    28  	client := &Client{
    29  		client: newMockClient(func(req *http.Request) (*http.Response, error) {
    30  			return &http.Response{
    31  				StatusCode: http.StatusOK,
    32  				Body:       ioutil.NopCloser(bytes.NewReader([]byte("invalid json"))),
    33  			}, nil
    34  		}),
    35  	}
    36  	_, err := client.Info(context.Background())
    37  	if err == nil || !strings.Contains(err.Error(), "invalid character") {
    38  		t.Fatalf("expected a 'invalid character' error, got %v", err)
    39  	}
    40  }
    41  
    42  func TestInfo(t *testing.T) {
    43  	expectedURL := "/info"
    44  	client := &Client{
    45  		client: newMockClient(func(req *http.Request) (*http.Response, error) {
    46  			if !strings.HasPrefix(req.URL.Path, expectedURL) {
    47  				return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
    48  			}
    49  			info := &types.Info{
    50  				ID:         "daemonID",
    51  				Containers: 3,
    52  			}
    53  			b, err := json.Marshal(info)
    54  			if err != nil {
    55  				return nil, err
    56  			}
    57  
    58  			return &http.Response{
    59  				StatusCode: http.StatusOK,
    60  				Body:       ioutil.NopCloser(bytes.NewReader(b)),
    61  			}, nil
    62  		}),
    63  	}
    64  
    65  	info, err := client.Info(context.Background())
    66  	if err != nil {
    67  		t.Fatal(err)
    68  	}
    69  
    70  	if info.ID != "daemonID" {
    71  		t.Fatalf("expected daemonID, got %s", info.ID)
    72  	}
    73  
    74  	if info.Containers != 3 {
    75  		t.Fatalf("expected 3 containers, got %d", info.Containers)
    76  	}
    77  }