DockerCLI/command/volume/create_test.go

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package volume
import (
"bytes"
"fmt"
"io/ioutil"
"strings"
"testing"
"github.com/docker/docker/api/types"
volumetypes "github.com/docker/docker/api/types/volume"
"github.com/docker/docker/cli/internal/test"
"github.com/docker/docker/pkg/testutil/assert"
)
func TestVolumeCreateErrors(t *testing.T) {
testCases := []struct {
args []string
flags map[string]string
volumeCreateFunc func(volumetypes.VolumesCreateBody) (types.Volume, error)
expectedError string
}{
{
args: []string{"volumeName"},
flags: map[string]string{
"name": "volumeName",
},
expectedError: "Conflicting options: either specify --name or provide positional arg, not both",
},
{
args: []string{"too", "many"},
expectedError: "requires at most 1 argument(s)",
},
{
volumeCreateFunc: func(createBody volumetypes.VolumesCreateBody) (types.Volume, error) {
return types.Volume{}, fmt.Errorf("error creating volume")
},
expectedError: "error creating volume",
},
}
for _, tc := range testCases {
buf := new(bytes.Buffer)
cmd := newCreateCommand(
test.NewFakeCli(&fakeClient{
volumeCreateFunc: tc.volumeCreateFunc,
}, buf),
)
cmd.SetArgs(tc.args)
for key, value := range tc.flags {
cmd.Flags().Set(key, value)
}
cmd.SetOutput(ioutil.Discard)
assert.Error(t, cmd.Execute(), tc.expectedError)
}
}
func TestVolumeCreateWithName(t *testing.T) {
name := "foo"
buf := new(bytes.Buffer)
cli := test.NewFakeCli(&fakeClient{
volumeCreateFunc: func(body volumetypes.VolumesCreateBody) (types.Volume, error) {
if body.Name != name {
return types.Volume{}, fmt.Errorf("expected name %q, got %q", name, body.Name)
}
return types.Volume{
Name: body.Name,
}, nil
},
}, buf)
// Test by flags
cmd := newCreateCommand(cli)
cmd.Flags().Set("name", name)
assert.NilError(t, cmd.Execute())
assert.Equal(t, strings.TrimSpace(buf.String()), name)
// Then by args
buf.Reset()
cmd = newCreateCommand(cli)
cmd.SetArgs([]string{name})
assert.NilError(t, cmd.Execute())
assert.Equal(t, strings.TrimSpace(buf.String()), name)
}
func TestVolumeCreateWithFlags(t *testing.T) {
expectedDriver := "foo"
expectedOpts := map[string]string{
"bar": "1",
"baz": "baz",
}
expectedLabels := map[string]string{
"lbl1": "v1",
"lbl2": "v2",
}
name := "banana"
buf := new(bytes.Buffer)
cli := test.NewFakeCli(&fakeClient{
volumeCreateFunc: func(body volumetypes.VolumesCreateBody) (types.Volume, error) {
if body.Name != "" {
return types.Volume{}, fmt.Errorf("expected empty name, got %q", body.Name)
}
if body.Driver != expectedDriver {
return types.Volume{}, fmt.Errorf("expected driver %q, got %q", expectedDriver, body.Driver)
}
if !compareMap(body.DriverOpts, expectedOpts) {
return types.Volume{}, fmt.Errorf("expected drivers opts %v, got %v", expectedOpts, body.DriverOpts)
}
if !compareMap(body.Labels, expectedLabels) {
return types.Volume{}, fmt.Errorf("expected labels %v, got %v", expectedLabels, body.Labels)
}
return types.Volume{
Name: name,
}, nil
},
}, buf)
cmd := newCreateCommand(cli)
cmd.Flags().Set("driver", "foo")
cmd.Flags().Set("opt", "bar=1")
cmd.Flags().Set("opt", "baz=baz")
cmd.Flags().Set("label", "lbl1=v1")
cmd.Flags().Set("label", "lbl2=v2")
assert.NilError(t, cmd.Execute())
assert.Equal(t, strings.TrimSpace(buf.String()), name)
}
func compareMap(actual map[string]string, expected map[string]string) bool {
if len(actual) != len(expected) {
return false
}
for key, value := range actual {
if expectedValue, ok := expected[key]; ok {
if expectedValue != value {
return false
}
} else {
return false
}
}
return true
}