DockerCLI/cli/command/container/export_test.go

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package container
import (
"io"
"io/ioutil"
"strings"
"testing"
"github.com/docker/cli/internal/test"
"gotest.tools/v3/assert"
"gotest.tools/v3/fs"
)
func TestContainerExportOutputToFile(t *testing.T) {
dir := fs.NewDir(t, "export-test")
defer dir.Remove()
cli := test.NewFakeCli(&fakeClient{
containerExportFunc: func(container string) (io.ReadCloser, error) {
return ioutil.NopCloser(strings.NewReader("bar")), nil
},
})
cmd := NewExportCommand(cli)
cmd.SetOut(ioutil.Discard)
cmd.SetArgs([]string{"-o", dir.Join("foo"), "container"})
assert.NilError(t, cmd.Execute())
expected := fs.Expected(t,
fs.WithFile("foo", "bar", fs.MatchAnyFileMode),
)
assert.Assert(t, fs.Equal(dir.Path(), expected))
}
func TestContainerExportOutputToIrregularFile(t *testing.T) {
cli := test.NewFakeCli(&fakeClient{
containerExportFunc: func(container string) (io.ReadCloser, error) {
return ioutil.NopCloser(strings.NewReader("foo")), nil
},
})
cmd := NewExportCommand(cli)
cmd.SetOut(ioutil.Discard)
cmd.SetArgs([]string{"-o", "/dev/random", "container"})
err := cmd.Execute()
assert.Assert(t, err != nil)
expected := `"/dev/random" must be a directory or a regular file`
assert.ErrorContains(t, err, expected)
}