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 TestInfoServerError(t *testing.T) { client := &Client{ client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")), } _, err := client.Info(context.Background()) if err == nil || err.Error() != "Error response from daemon: Server error" { t.Fatalf("expected a Server Error, got %v", err) } } func TestInfoInvalidResponseJSONError(t *testing.T) { client := &Client{ client: newMockClient(func(req *http.Request) (*http.Response, error) { return &http.Response{ StatusCode: http.StatusOK, Body: ioutil.NopCloser(bytes.NewReader([]byte("invalid json"))), }, nil }), } _, err := client.Info(context.Background()) if err == nil || !strings.Contains(err.Error(), "invalid character") { t.Fatalf("expected a 'invalid character' error, got %v", err) } } func TestInfo(t *testing.T) { expectedURL := "/info" 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) } info := &types.Info{ InfoBase: &types.InfoBase{ ID: "daemonID", Containers: 3, }, } b, err := json.Marshal(info) if err != nil { return nil, err } return &http.Response{ StatusCode: http.StatusOK, Body: ioutil.NopCloser(bytes.NewReader(b)), }, nil }), } info, err := client.Info(context.Background()) if err != nil { t.Fatal(err) } if info.ID != "daemonID" { t.Fatalf("expected daemonID, got %s", info.ID) } if info.Containers != 3 { t.Fatalf("expected 3 containers, got %d", info.Containers) } }