DockerCLI/cli/command/context/use_test.go

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package context
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/docker/cli/cli/config"
"github.com/docker/cli/cli/config/configfile"
"github.com/docker/cli/cli/context/store"
"gotest.tools/assert"
)
func TestUse(t *testing.T) {
configDir, err := ioutil.TempDir("", t.Name()+"config")
assert.NilError(t, err)
defer os.RemoveAll(configDir)
configFilePath := filepath.Join(configDir, "config.json")
testCfg := configfile.New(configFilePath)
cli, cleanup := makeFakeCli(t, withCliConfig(testCfg))
defer cleanup()
err = RunCreate(cli, &CreateOptions{
Name: "test",
Docker: map[string]string{},
})
assert.NilError(t, err)
assert.NilError(t, newUseCommand(cli).RunE(nil, []string{"test"}))
reloadedConfig, err := config.Load(configDir)
assert.NilError(t, err)
assert.Equal(t, "test", reloadedConfig.CurrentContext)
// switch back to default
cli.OutBuffer().Reset()
cli.ErrBuffer().Reset()
assert.NilError(t, newUseCommand(cli).RunE(nil, []string{"default"}))
reloadedConfig, err = config.Load(configDir)
assert.NilError(t, err)
assert.Equal(t, "", reloadedConfig.CurrentContext)
assert.Equal(t, "default\n", cli.OutBuffer().String())
assert.Equal(t, "Current context is now \"default\"\n", cli.ErrBuffer().String())
}
func TestUseNoExist(t *testing.T) {
cli, cleanup := makeFakeCli(t)
defer cleanup()
err := newUseCommand(cli).RunE(nil, []string{"test"})
assert.Check(t, store.IsErrContextDoesNotExist(err))
}