package client import ( "bytes" "encoding/json" "fmt" "io/ioutil" "net/http" "strings" "testing" "github.com/docker/docker/api/types" "golang.org/x/net/context" ) func TestContainerDiffError(t *testing.T) { client := &Client{ client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")), } _, err := client.ContainerDiff(context.Background(), "nothing") if err == nil || err.Error() != "Error response from daemon: Server error" { t.Fatalf("expected a Server Error, got %v", err) } } func TestContainerDiff(t *testing.T) { expectedURL := "/containers/container_id/changes" client := &Client{ client: newMockClient(func(req *http.Request) (*http.Response, error) { if !strings.HasPrefix(req.URL.Path, expectedURL) { return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL) } b, err := json.Marshal([]types.ContainerChange{ { Kind: 0, Path: "/path/1", }, { Kind: 1, Path: "/path/2", }, }) if err != nil { return nil, err } return &http.Response{ StatusCode: http.StatusOK, Body: ioutil.NopCloser(bytes.NewReader(b)), }, nil }), } changes, err := client.ContainerDiff(context.Background(), "container_id") if err != nil { t.Fatal(err) } if len(changes) != 2 { t.Fatalf("expected an array of 2 changes, got %v", changes) } }