adding network list test

Signed-off-by: khaled souf <khaled.souf@gmail.com>

cli/command/network/client_test.go

@@ -12,6 +12,7 @@ type fakeClient struct {
 	networkCreateFunc     func(ctx context.Context, name string, options types.NetworkCreate) (types.NetworkCreateResponse, error)
 	networkConnectFunc    func(ctx context.Context, networkID, container string, config *network.EndpointSettings) error
 	networkDisconnectFunc func(ctx context.Context, networkID, container string, force bool) error
+	networkListFunc       func(ctx context.Context, options types.NetworkListOptions) ([]types.NetworkResource, error)
 }
 
 func (c *fakeClient) NetworkCreate(ctx context.Context, name string, options types.NetworkCreate) (types.NetworkCreateResponse, error) {
@@ -34,3 +35,10 @@ func (c *fakeClient) NetworkDisconnect(ctx context.Context, networkID, container
 	}
 	return nil
 }
+
+func (c *fakeClient) NetworkList(ctx context.Context, options types.NetworkListOptions) ([]types.NetworkResource, error) {
+	if c.networkListFunc != nil {
+		return c.networkListFunc(ctx, options)
+	}
+	return []types.NetworkResource{}, nil
+}

cli/command/network/list_test.go

@@ -0,0 +1,69 @@
+package network
+
+import (
+	"testing"
+
+	"io/ioutil"
+
+	"strings"
+
+	"github.com/docker/cli/internal/test"
+	. "github.com/docker/cli/internal/test/builders"
+	"github.com/docker/cli/internal/test/testutil"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/gotestyourself/gotestyourself/golden"
+	"github.com/pkg/errors"
+	"github.com/stretchr/testify/assert"
+	"golang.org/x/net/context"
+)
+
+func TestNetworkListErrors(t *testing.T) {
+	testCases := []struct {
+		networkListFunc func(ctx context.Context, options types.NetworkListOptions) ([]types.NetworkResource, error)
+		expectedError   string
+	}{
+		{
+			networkListFunc: func(ctx context.Context, options types.NetworkListOptions) ([]types.NetworkResource, error) {
+				return []types.NetworkResource{}, errors.Errorf("error creating network")
+			},
+			expectedError: "error creating network",
+		},
+	}
+
+	for _, tc := range testCases {
+		cmd := newListCommand(
+			test.NewFakeCli(&fakeClient{
+				networkListFunc: tc.networkListFunc,
+			}),
+		)
+		cmd.SetOutput(ioutil.Discard)
+		testutil.ErrorContains(t, cmd.Execute(), tc.expectedError)
+
+	}
+}
+
+func TestNetworkListWithFlags(t *testing.T) {
+
+	filterArgs := filters.NewArgs()
+	filterArgs.Add("image.name", "ubuntu")
+
+	expectedOpts := types.NetworkListOptions{
+		Filters: filterArgs,
+	}
+
+	cli := test.NewFakeCli(&fakeClient{
+		networkListFunc: func(ctx context.Context, options types.NetworkListOptions) ([]types.NetworkResource, error) {
+			assert.Equal(t, expectedOpts, options, "not expected options error")
+			return []types.NetworkResource{*NetworkResource(NetworkResourceID("123454321"),
+				NetworkResourceName("network_1"),
+				NetworkResourceDriver("09.7.01"),
+				NetworkResourceScope("global"))}, nil
+		},
+	})
+	cmd := newListCommand(cli)
+
+	cmd.Flags().Set("filter", "image.name=ubuntu")
+	assert.NoError(t, cmd.Execute())
+	golden.Assert(t, strings.TrimSpace(cli.OutBuffer().String()), "network-list.golden")
+}

cli/command/network/testdata/network-list.golden

@@ -0,0 +1,2 @@
+NETWORK ID          NAME                DRIVER              SCOPE
+123454321           network_1           09.7.01             global

internal/test/builders/network.go

@@ -0,0 +1,45 @@
+package builders
+
+import (
+	"github.com/docker/docker/api/types"
+)
+
+// NetworkResource creates a network resource with default values.
+// Any number of networkResource function builder can be pass to modify the existing value.
+// feel free to add another builder func if you need to override another value
+func NetworkResource(builders ...func(resource *types.NetworkResource)) *types.NetworkResource {
+	resource := &types.NetworkResource{}
+
+	for _, builder := range builders {
+		builder(resource)
+	}
+	return resource
+}
+
+// NetworkResourceName sets the name of the resource network
+func NetworkResourceName(name string) func(networkResource *types.NetworkResource) {
+	return func(networkResource *types.NetworkResource) {
+		networkResource.Name = name
+	}
+}
+
+// NetworkResourceID sets the ID of the resource network
+func NetworkResourceID(id string) func(networkResource *types.NetworkResource) {
+	return func(networkResource *types.NetworkResource) {
+		networkResource.ID = id
+	}
+}
+
+// NetworkResourceDriver sets the driver of the resource network
+func NetworkResourceDriver(name string) func(networkResource *types.NetworkResource) {
+	return func(networkResource *types.NetworkResource) {
+		networkResource.Driver = name
+	}
+}
+
+// NetworkResourceScope sets the Scope of the resource network
+func NetworkResourceScope(scope string) func(networkResource *types.NetworkResource) {
+	return func(networkResource *types.NetworkResource) {
+		networkResource.Scope = scope
+	}
+}