Add tests for completions that call the API

Signed-off-by: Harald Albers <github@albersweb.de>

cli/command/system/completion_test.go

@@ -0,0 +1,165 @@
+package system
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"testing"
+
+	"github.com/docker/cli/internal/test"
+	"github.com/docker/cli/internal/test/builders"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/api/types/image"
+	"github.com/docker/docker/api/types/network"
+	"github.com/docker/docker/api/types/swarm"
+	"github.com/docker/docker/api/types/system"
+	"github.com/docker/docker/api/types/volume"
+	"github.com/spf13/cobra"
+	"gotest.tools/v3/assert"
+)
+
+func TestCompleteEventFilter(t *testing.T) {
+	tests := []struct {
+		client     *fakeClient
+		toComplete string
+		expected   []string
+	}{
+		{
+			client: &fakeClient{
+				containerListFunc: func(_ context.Context, _ container.ListOptions) ([]container.Summary, error) {
+					return []container.Summary{
+						*builders.Container("c1"),
+						*builders.Container("c2"),
+					}, nil
+				},
+			},
+			toComplete: "container=",
+			expected:   []string{"container=c1", "container=c2"},
+		},
+		{
+			client: &fakeClient{
+				containerListFunc: func(_ context.Context, _ container.ListOptions) ([]container.Summary, error) {
+					return nil, errors.New("API error")
+				},
+			},
+			toComplete: "container=",
+			expected:   []string{},
+		},
+		{
+			client: &fakeClient{
+				infoFunc: func(ctx context.Context) (system.Info, error) {
+					return system.Info{
+						ID:   "daemon-id",
+						Name: "daemon-name",
+					}, nil
+				},
+			},
+			toComplete: "daemon=",
+			expected:   []string{"daemon=daemon-name", "daemon=daemon-id"},
+		},
+		{
+			client: &fakeClient{
+				infoFunc: func(ctx context.Context) (system.Info, error) {
+					return system.Info{}, errors.New("API error")
+				},
+			},
+			toComplete: "daemon=",
+			expected:   []string{},
+		},
+		{
+			client: &fakeClient{
+				imageListFunc: func(_ context.Context, _ image.ListOptions) ([]image.Summary, error) {
+					return []image.Summary{
+						{RepoTags: []string{"img:1"}},
+						{RepoTags: []string{"img:2"}},
+					}, nil
+				},
+			},
+			toComplete: "image=",
+			expected:   []string{"image=img:1", "image=img:2"},
+		},
+		{
+			client: &fakeClient{
+				imageListFunc: func(_ context.Context, _ image.ListOptions) ([]image.Summary, error) {
+					return []image.Summary{}, errors.New("API error")
+				},
+			},
+			toComplete: "image=",
+			expected:   []string{},
+		},
+		{
+			client: &fakeClient{
+				networkListFunc: func(_ context.Context, _ network.ListOptions) ([]network.Summary, error) {
+					return []network.Summary{
+						*builders.NetworkResource(builders.NetworkResourceName("nw1")),
+						*builders.NetworkResource(builders.NetworkResourceName("nw2")),
+					}, nil
+				},
+			},
+			toComplete: "network=",
+			expected:   []string{"network=nw1", "network=nw2"},
+		},
+		{
+			client: &fakeClient{
+				networkListFunc: func(_ context.Context, _ network.ListOptions) ([]network.Summary, error) {
+					return nil, errors.New("API error")
+				},
+			},
+			toComplete: "network=",
+			expected:   []string{},
+		},
+		{
+			client: &fakeClient{
+				nodeListFunc: func(_ context.Context, _ types.NodeListOptions) ([]swarm.Node, error) {
+					return []swarm.Node{
+						*builders.Node(builders.Hostname("n1")),
+					}, nil
+				},
+			},
+			toComplete: "node=",
+			expected:   []string{"node=n1"},
+		},
+		{
+			client: &fakeClient{
+				nodeListFunc: func(_ context.Context, _ types.NodeListOptions) ([]swarm.Node, error) {
+					return []swarm.Node{}, errors.New("API error")
+				},
+			},
+			toComplete: "node=",
+			expected:   []string{},
+		},
+		{
+			client: &fakeClient{
+				volumeListFunc: func(ctx context.Context, options volume.ListOptions) (volume.ListResponse, error) {
+					return volume.ListResponse{
+						Volumes: []*volume.Volume{
+							builders.Volume(builders.VolumeName("v1")),
+							builders.Volume(builders.VolumeName("v2")),
+						},
+					}, nil
+				},
+			},
+			toComplete: "volume=",
+			expected:   []string{"volume=v1", "volume=v2"},
+		},
+		{
+			client: &fakeClient{
+				volumeListFunc: func(ctx context.Context, options volume.ListOptions) (volume.ListResponse, error) {
+					return volume.ListResponse{}, errors.New("API error")
+				},
+			},
+			toComplete: "volume=",
+			expected:   []string{},
+		},
+	}
+
+	for _, tc := range tests {
+		cli := test.NewFakeCli(tc.client)
+
+		completions, directive := completeEventFilters(cli)(NewEventsCommand(cli), nil, tc.toComplete)
+
+		assert.DeepEqual(t, completions, tc.expected)
+		assert.Equal(t, directive, cobra.ShellCompDirectiveNoFileComp, fmt.Sprintf("wrong directive in completion for '%s'", tc.toComplete))
+	}
+}