Move engine-api client package

This moves the engine-api client package to `/docker/docker/client`.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

client/image_list_test.go

@@ -0,0 +1,122 @@
+package client
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
+	"golang.org/x/net/context"
+)
+
+func TestImageListError(t *testing.T) {
+	client := &Client{
+		transport: newMockClient(nil, errorMock(http.StatusInternalServerError, "Server error")),
+	}
+
+	_, err := client.ImageList(context.Background(), types.ImageListOptions{})
+	if err == nil || err.Error() != "Error response from daemon: Server error" {
+		t.Fatalf("expected a Server Error, got %v", err)
+	}
+}
+
+func TestImageList(t *testing.T) {
+	expectedURL := "/images/json"
+
+	noDanglingfilters := filters.NewArgs()
+	noDanglingfilters.Add("dangling", "false")
+
+	filters := filters.NewArgs()
+	filters.Add("label", "label1")
+	filters.Add("label", "label2")
+	filters.Add("dangling", "true")
+
+	listCases := []struct {
+		options             types.ImageListOptions
+		expectedQueryParams map[string]string
+	}{
+		{
+			options: types.ImageListOptions{},
+			expectedQueryParams: map[string]string{
+				"all":     "",
+				"filter":  "",
+				"filters": "",
+			},
+		},
+		{
+			options: types.ImageListOptions{
+				All:       true,
+				MatchName: "image_name",
+			},
+			expectedQueryParams: map[string]string{
+				"all":     "1",
+				"filter":  "image_name",
+				"filters": "",
+			},
+		},
+		{
+			options: types.ImageListOptions{
+				Filters: filters,
+			},
+			expectedQueryParams: map[string]string{
+				"all":     "",
+				"filter":  "",
+				"filters": `{"dangling":{"true":true},"label":{"label1":true,"label2":true}}`,
+			},
+		},
+		{
+			options: types.ImageListOptions{
+				Filters: noDanglingfilters,
+			},
+			expectedQueryParams: map[string]string{
+				"all":     "",
+				"filter":  "",
+				"filters": `{"dangling":{"false":true}}`,
+			},
+		},
+	}
+	for _, listCase := range listCases {
+		client := &Client{
+			transport: newMockClient(nil, 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)
+				}
+				query := req.URL.Query()
+				for key, expected := range listCase.expectedQueryParams {
+					actual := query.Get(key)
+					if actual != expected {
+						return nil, fmt.Errorf("%s not set in URL query properly. Expected '%s', got %s", key, expected, actual)
+					}
+				}
+				content, err := json.Marshal([]types.Image{
+					{
+						ID: "image_id2",
+					},
+					{
+						ID: "image_id2",
+					},
+				})
+				if err != nil {
+					return nil, err
+				}
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       ioutil.NopCloser(bytes.NewReader(content)),
+				}, nil
+			}),
+		}
+
+		images, err := client.ImageList(context.Background(), listCase.options)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if len(images) != 2 {
+			t.Fatalf("expected 2 images, got %v", images)
+		}
+	}
+}