Add env variable to cmd flags

client/config/cmd_test.go

@@ -0,0 +1,61 @@
+package config
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/cosmos-sdk/client/flags"
+)
+
+var ErrWrongNumberOfArgs = fmt.Errorf("wrong number of arguments")
+
+func Test_runConfigCmdTwiceWithShorterNodeValue(t *testing.T) {
+	// Prepare environment
+	t.Parallel()
+	configHome, cleanup := tmpDir(t)
+	defer cleanup()
+	_ = os.RemoveAll(filepath.Join(configHome, "config"))
+	viper.Set(flags.FlagHome, configHome)
+
+	// Init command config
+	cmd := Cmd()
+	assert.NotNil(t, cmd)
+
+	err := cmd.RunE(cmd, []string{"node", "tcp://localhost:26657"})
+	assert.Nil(t, err)
+
+	err = cmd.RunE(cmd, []string{"node", "--get"})
+	assert.Nil(t, err)
+
+	err = cmd.RunE(cmd, []string{"node", "tcp://local:26657"})
+	assert.Nil(t, err)
+
+	err = cmd.RunE(cmd, []string{"node", "--get"})
+	assert.Nil(t, err)
+
+	err = cmd.RunE(cmd, nil)
+	assert.Nil(t, err)
+
+	//err = cmd.RunE(cmd, []string{"invalidKey", "--get"})
+	//require.Equal(t, err, errUnknownConfigKey("invalidKey"))
+
+	err = cmd.RunE(cmd, []string{"invalidArg1"})
+	require.Equal(t, err, ErrWrongNumberOfArgs)
+
+	//err = cmd.RunE(cmd, []string{"invalidKey", "invalidValue"})
+	//require.Equal(t, err, errUnknownConfigKey("invalidKey"))
+
+}
+
+func tmpDir(t *testing.T) (string, func()) {
+	dir, err := ioutil.TempDir("", t.Name()+"_")
+	require.NoError(t, err)
+	return dir, func() { _ = os.RemoveAll(dir) }
+}

client/context.go

@@ -229,6 +229,7 @@ func (ctx Context) WithInterfaceRegistry(interfaceRegistry codectypes.InterfaceR
 // client-side config from the config file.
 func (ctx Context) WithViper() Context {
 	v := viper.New()
+	v.AutomaticEnv()
 	ctx.Viper = v
 	return ctx
 }