Added unit tests to the cli/command/idresolver package

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

cli/command/idresolver/client_test.go

@@ -0,0 +1,27 @@
+package idresolver
+
+import (
+	"github.com/docker/docker/api/types/swarm"
+	"github.com/docker/docker/client"
+	"golang.org/x/net/context"
+)
+
+type fakeClient struct {
+	client.Client
+	nodeInspectFunc    func(string) (swarm.Node, []byte, error)
+	serviceInspectFunc func(string) (swarm.Service, []byte, error)
+}
+
+func (cli *fakeClient) NodeInspectWithRaw(ctx context.Context, nodeID string) (swarm.Node, []byte, error) {
+	if cli.nodeInspectFunc != nil {
+		return cli.nodeInspectFunc(nodeID)
+	}
+	return swarm.Node{}, []byte{}, nil
+}
+
+func (cli *fakeClient) ServiceInspectWithRaw(ctx context.Context, serviceID string) (swarm.Service, []byte, error) {
+	if cli.serviceInspectFunc != nil {
+		return cli.serviceInspectFunc(serviceID)
+	}
+	return swarm.Service{}, []byte{}, nil
+}

cli/command/idresolver/idresolver_test.go

@@ -0,0 +1,144 @@
+package idresolver
+
+import (
+	"testing"
+
+	"github.com/docker/docker/api/types/swarm"
+	// Import builders to get the builder function as package function
+	. "github.com/docker/docker/cli/internal/test/builders"
+	"github.com/docker/docker/pkg/testutil/assert"
+	"github.com/pkg/errors"
+	"golang.org/x/net/context"
+)
+
+func TestResolveError(t *testing.T) {
+	cli := &fakeClient{
+		nodeInspectFunc: func(nodeID string) (swarm.Node, []byte, error) {
+			return swarm.Node{}, []byte{}, errors.Errorf("error inspecting node")
+		},
+	}
+
+	idResolver := New(cli, false)
+	_, err := idResolver.Resolve(context.Background(), struct{}{}, "nodeID")
+
+	assert.Error(t, err, "unsupported type")
+}
+
+func TestResolveWithNoResolveOption(t *testing.T) {
+	resolved := false
+	cli := &fakeClient{
+		nodeInspectFunc: func(nodeID string) (swarm.Node, []byte, error) {
+			resolved = true
+			return swarm.Node{}, []byte{}, nil
+		},
+		serviceInspectFunc: func(serviceID string) (swarm.Service, []byte, error) {
+			resolved = true
+			return swarm.Service{}, []byte{}, nil
+		},
+	}
+
+	idResolver := New(cli, true)
+	id, err := idResolver.Resolve(context.Background(), swarm.Node{}, "nodeID")
+
+	assert.NilError(t, err)
+	assert.Equal(t, id, "nodeID")
+	assert.Equal(t, resolved, false)
+}
+
+func TestResolveWithCache(t *testing.T) {
+	inspectCounter := 0
+	cli := &fakeClient{
+		nodeInspectFunc: func(nodeID string) (swarm.Node, []byte, error) {
+			inspectCounter++
+			return *Node(NodeName("node-foo")), []byte{}, nil
+		},
+	}
+
+	idResolver := New(cli, false)
+
+	ctx := context.Background()
+	for i := 0; i < 2; i++ {
+		id, err := idResolver.Resolve(ctx, swarm.Node{}, "nodeID")
+		assert.NilError(t, err)
+		assert.Equal(t, id, "node-foo")
+	}
+
+	assert.Equal(t, inspectCounter, 1)
+}
+
+func TestResolveNode(t *testing.T) {
+	testCases := []struct {
+		nodeID          string
+		nodeInspectFunc func(string) (swarm.Node, []byte, error)
+		expectedID      string
+	}{
+		{
+			nodeID: "nodeID",
+			nodeInspectFunc: func(string) (swarm.Node, []byte, error) {
+				return swarm.Node{}, []byte{}, errors.Errorf("error inspecting node")
+			},
+			expectedID: "nodeID",
+		},
+		{
+			nodeID: "nodeID",
+			nodeInspectFunc: func(string) (swarm.Node, []byte, error) {
+				return *Node(NodeName("node-foo")), []byte{}, nil
+			},
+			expectedID: "node-foo",
+		},
+		{
+			nodeID: "nodeID",
+			nodeInspectFunc: func(string) (swarm.Node, []byte, error) {
+				return *Node(NodeName(""), Hostname("node-hostname")), []byte{}, nil
+			},
+			expectedID: "node-hostname",
+		},
+	}
+
+	ctx := context.Background()
+	for _, tc := range testCases {
+		cli := &fakeClient{
+			nodeInspectFunc: tc.nodeInspectFunc,
+		}
+		idResolver := New(cli, false)
+		id, err := idResolver.Resolve(ctx, swarm.Node{}, tc.nodeID)
+
+		assert.NilError(t, err)
+		assert.Equal(t, id, tc.expectedID)
+	}
+}
+
+func TestResolveService(t *testing.T) {
+	testCases := []struct {
+		serviceID          string
+		serviceInspectFunc func(string) (swarm.Service, []byte, error)
+		expectedID         string
+	}{
+		{
+			serviceID: "serviceID",
+			serviceInspectFunc: func(string) (swarm.Service, []byte, error) {
+				return swarm.Service{}, []byte{}, errors.Errorf("error inspecting service")
+			},
+			expectedID: "serviceID",
+		},
+		{
+			serviceID: "serviceID",
+			serviceInspectFunc: func(string) (swarm.Service, []byte, error) {
+				return *Service(ServiceName("service-foo")), []byte{}, nil
+			},
+			expectedID: "service-foo",
+		},
+	}
+
+	ctx := context.Background()
+	for _, tc := range testCases {
+		cli := &fakeClient{
+			serviceInspectFunc: tc.serviceInspectFunc,
+		}
+		idResolver := New(cli, false)
+		id, err := idResolver.Resolve(ctx, swarm.Service{}, tc.serviceID)
+
+		assert.NilError(t, err)
+		assert.Equal(t, id, tc.expectedID)
+	}
+}

cli/internal/test/builders/node.go

@@ -76,6 +76,13 @@ func NodeID(id string) func(*swarm.Node) {
 	}
 }
 
+// NodeName sets the node name
+func NodeName(name string) func(*swarm.Node) {
+	return func(node *swarm.Node) {
+		node.Spec.Annotations.Name = name
+	}
+}
+
 // NodeLabels sets the node labels
 func NodeLabels(labels map[string]string) func(*swarm.Node) {
 	return func(node *swarm.Node) {

cli/internal/test/builders/service.go

@@ -0,0 +1,32 @@
+package builders
+
+import (
+	"github.com/docker/docker/api/types/swarm"
+)
+
+// Service creates a service with default values.
+// Any number of service builder functions can be passed to augment it.
+// Currently, only ServiceName is implemented
+func Service(builders ...func(*swarm.Service)) *swarm.Service {
+	service := &swarm.Service{
+		ID: "serviceID",
+		Spec: swarm.ServiceSpec{
+			Annotations: swarm.Annotations{
+				Name: "defaultServiceName",
+			},
+		},
+	}
+
+	for _, builder := range builders {
+		builder(service)
+	}
+
+	return service
+}
+
+// ServiceName sets the service name
+func ServiceName(name string) func(*swarm.Service) {
+	return func(service *swarm.Service) {
+		service.Spec.Annotations.Name = name
+	}
+}