add unit tests to task package

Signed-off-by: Arash Deshmeh <adeshmeh@ca.ibm.com>

cli/command/task/client_test.go

@@ -0,0 +1,28 @@
+package task
+
+import (
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/swarm"
+	"github.com/docker/docker/client"
+	"golang.org/x/net/context"
+)
+
+type fakeClient struct {
+	client.APIClient
+	nodeInspectWithRaw    func(ref string) (swarm.Node, []byte, error)
+	serviceInspectWithRaw func(ref string, options types.ServiceInspectOptions) (swarm.Service, []byte, error)
+}
+
+func (cli *fakeClient) NodeInspectWithRaw(ctx context.Context, ref string) (swarm.Node, []byte, error) {
+	if cli.nodeInspectWithRaw != nil {
+		return cli.nodeInspectWithRaw(ref)
+	}
+	return swarm.Node{}, nil, nil
+}
+
+func (cli *fakeClient) ServiceInspectWithRaw(ctx context.Context, ref string, options types.ServiceInspectOptions) (swarm.Service, []byte, error) {
+	if cli.serviceInspectWithRaw != nil {
+		return cli.serviceInspectWithRaw(ref, options)
+	}
+	return swarm.Service{}, nil, nil
+}