mirror of https://github.com/docker/cli.git
109 lines
3.0 KiB
Go
109 lines
3.0 KiB
Go
package image
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import (
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"io"
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"io/ioutil"
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"os"
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"strings"
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"testing"
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"github.com/docker/cli/internal/test"
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"github.com/pkg/errors"
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"gotest.tools/v3/assert"
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is "gotest.tools/v3/assert/cmp"
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)
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func TestNewSaveCommandErrors(t *testing.T) {
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testCases := []struct {
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name string
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args []string
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isTerminal bool
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expectedError string
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imageSaveFunc func(images []string) (io.ReadCloser, error)
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}{
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{
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name: "wrong args",
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args: []string{},
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expectedError: "requires at least 1 argument.",
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},
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{
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name: "output to terminal",
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args: []string{"output", "file", "arg1"},
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isTerminal: true,
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expectedError: "cowardly refusing to save to a terminal. Use the -o flag or redirect",
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},
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{
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name: "ImageSave fail",
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args: []string{"arg1"},
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isTerminal: false,
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expectedError: "error saving image",
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imageSaveFunc: func(images []string) (io.ReadCloser, error) {
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return ioutil.NopCloser(strings.NewReader("")), errors.Errorf("error saving image")
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},
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},
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{
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name: "output directory does not exist",
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args: []string{"-o", "fakedir/out.tar", "arg1"},
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expectedError: "failed to save image: invalid output path: directory \"fakedir\" does not exist",
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},
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{
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name: "output file is irregular",
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args: []string{"-o", "/dev/null", "arg1"},
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expectedError: "failed to save image: invalid output path: \"/dev/null\" must be a directory or a regular file",
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},
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}
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for _, tc := range testCases {
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cli := test.NewFakeCli(&fakeClient{imageSaveFunc: tc.imageSaveFunc})
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cli.Out().SetIsTerminal(tc.isTerminal)
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cmd := NewSaveCommand(cli)
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cmd.SetOutput(ioutil.Discard)
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cmd.SetArgs(tc.args)
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assert.ErrorContains(t, cmd.Execute(), tc.expectedError)
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}
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}
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func TestNewSaveCommandSuccess(t *testing.T) {
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testCases := []struct {
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args []string
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isTerminal bool
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imageSaveFunc func(images []string) (io.ReadCloser, error)
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deferredFunc func()
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}{
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{
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args: []string{"-o", "save_tmp_file", "arg1"},
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isTerminal: true,
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imageSaveFunc: func(images []string) (io.ReadCloser, error) {
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assert.Assert(t, is.Len(images, 1))
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assert.Check(t, is.Equal("arg1", images[0]))
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return ioutil.NopCloser(strings.NewReader("")), nil
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},
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deferredFunc: func() {
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os.Remove("save_tmp_file")
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},
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},
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{
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args: []string{"arg1", "arg2"},
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isTerminal: false,
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imageSaveFunc: func(images []string) (io.ReadCloser, error) {
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assert.Assert(t, is.Len(images, 2))
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assert.Check(t, is.Equal("arg1", images[0]))
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assert.Check(t, is.Equal("arg2", images[1]))
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return ioutil.NopCloser(strings.NewReader("")), nil
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},
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},
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}
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for _, tc := range testCases {
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cmd := NewSaveCommand(test.NewFakeCli(&fakeClient{
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imageSaveFunc: func(images []string) (io.ReadCloser, error) {
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return ioutil.NopCloser(strings.NewReader("")), nil
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},
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}))
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cmd.SetOutput(ioutil.Discard)
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cmd.SetArgs(tc.args)
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assert.NilError(t, cmd.Execute())
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if tc.deferredFunc != nil {
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tc.deferredFunc()
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}
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}
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}
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