Add unit test to VolumeCreate

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

client/volume_create_test.go

@@ -0,0 +1,74 @@
+package client
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/docker/engine-api/client/transport"
+	"github.com/docker/engine-api/types"
+)
+
+func TestVolumeCreateError(t *testing.T) {
+	client := &Client{
+		transport: transport.NewMockClient(nil, transport.ErrorMock(http.StatusInternalServerError, "Server error")),
+	}
+
+	_, err := client.VolumeCreate(types.VolumeCreateRequest{})
+	if err == nil || err.Error() != "Error response from daemon: Server error" {
+		t.Fatalf("expected a Server Error, got %v", err)
+	}
+}
+
+func TestVolumeCreate(t *testing.T) {
+	expectedURL := "/volumes/create"
+
+	client := &Client{
+		transport: 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)
+			}
+
+			if req.Method != "POST" {
+				return nil, fmt.Errorf("expected POST method, got %s", req.Method)
+			}
+
+			content, err := json.Marshal(types.Volume{
+				Name:       "volume",
+				Driver:     "local",
+				Mountpoint: "mountpoint",
+			})
+			if err != nil {
+				return nil, err
+			}
+			return &http.Response{
+				StatusCode: http.StatusOK,
+				Body:       ioutil.NopCloser(bytes.NewReader(content)),
+			}, nil
+		}),
+	}
+
+	volume, err := client.VolumeCreate(types.VolumeCreateRequest{
+		Name:   "myvolume",
+		Driver: "mydriver",
+		DriverOpts: map[string]string{
+			"opt-key": "opt-value",
+		},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if volume.Name != "volume" {
+		t.Fatalf("expected volume.Name to be 'volume', got %s", volume.Name)
+	}
+	if volume.Driver != "local" {
+		t.Fatalf("expected volume.Driver to be 'local', got %s", volume.Driver)
+	}
+	if volume.Mountpoint != "mountpoint" {
+		t.Fatalf("expected volume.Mountpoint to be 'mountpoint', got %s", volume.Mountpoint)
+	}
+}