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path: root/client/container_diff_test.go
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package client // import "github.com/docker/docker/client"

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strings"
	"testing"

	"github.com/docker/docker/api/types/container"
	"github.com/docker/docker/errdefs"
)

func TestContainerDiffError(t *testing.T) {
	client := &Client{
		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
	}
	_, err := client.ContainerDiff(context.Background(), "nothing")
	if !errdefs.IsSystem(err) {
		t.Fatalf("expected a Server Error, got %[1]T: %[1]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([]container.ContainerChangeResponseItem{
				{
					Kind: 0,
					Path: "/path/1",
				},
				{
					Kind: 1,
					Path: "/path/2",
				},
			})
			if err != nil {
				return nil, err
			}
			return &http.Response{
				StatusCode: http.StatusOK,
				Body:       io.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)
	}
}