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package commands
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"testing"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
cfg "github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/libs/cli"
tmos "github.com/tendermint/tendermint/libs/os"
)
var (
defaultRoot = os.ExpandEnv("$HOME/.some/test/dir")
)
// clearConfig clears env vars, the given root dir, and resets viper.
func clearConfig(dir string) {
if err := os.Unsetenv("TMHOME"); err != nil {
panic(err)
}
if err := os.Unsetenv("TM_HOME"); err != nil {
panic(err)
}
if err := os.RemoveAll(dir); err != nil {
panic(err)
}
viper.Reset()
config = cfg.DefaultConfig()
}
// prepare new rootCmd
func testRootCmd() *cobra.Command {
rootCmd := &cobra.Command{
Use: RootCmd.Use,
PersistentPreRunE: RootCmd.PersistentPreRunE,
Run: func(cmd *cobra.Command, args []string) {},
}
registerFlagsRootCmd(rootCmd)
var l string
rootCmd.PersistentFlags().String("log", l, "Log")
return rootCmd
}
func testSetup(rootDir string, args []string, env map[string]string) error {
clearConfig(defaultRoot)
rootCmd := testRootCmd()
cmd := cli.PrepareBaseCmd(rootCmd, "TM", defaultRoot)
// run with the args and env
args = append([]string{rootCmd.Use}, args...)
return cli.RunWithArgs(cmd, args, env)
}
func TestRootHome(t *testing.T) {
newRoot := filepath.Join(defaultRoot, "something-else")
cases := []struct {
args []string
env map[string]string
root string
}{
{nil, nil, defaultRoot},
{[]string{"--home", newRoot}, nil, newRoot},
{nil, map[string]string{"TMHOME": newRoot}, newRoot},
}
for i, tc := range cases {
idxString := strconv.Itoa(i)
err := testSetup(defaultRoot, tc.args, tc.env)
require.Nil(t, err, idxString)
assert.Equal(t, tc.root, config.RootDir, idxString)
assert.Equal(t, tc.root, config.P2P.RootDir, idxString)
assert.Equal(t, tc.root, config.Consensus.RootDir, idxString)
assert.Equal(t, tc.root, config.Mempool.RootDir, idxString)
}
}
func TestRootFlagsEnv(t *testing.T) {
// defaults
defaults := cfg.DefaultConfig()
defaultLogLvl := defaults.LogLevel
cases := []struct {
args []string
env map[string]string
logLevel string
}{
{[]string{"--log", "debug"}, nil, defaultLogLvl}, // wrong flag
{[]string{"--log-level", "debug"}, nil, "debug"}, // right flag
{nil, map[string]string{"TM_LOW": "debug"}, defaultLogLvl}, // wrong env flag
{nil, map[string]string{"MT_LOG_LEVEL": "debug"}, defaultLogLvl}, // wrong env prefix
{nil, map[string]string{"TM_LOG_LEVEL": "debug"}, "debug"}, // right env
}
for i, tc := range cases {
idxString := strconv.Itoa(i)
err := testSetup(defaultRoot, tc.args, tc.env)
require.Nil(t, err, idxString)
assert.Equal(t, tc.logLevel, config.LogLevel, idxString)
}
}
func TestRootConfig(t *testing.T) {
// write non-default config
nonDefaultLogLvl := "abc:debug"
cvals := map[string]string{
"log-level": nonDefaultLogLvl,
}
cases := []struct {
args []string
env map[string]string
logLvl string
}{
{nil, nil, nonDefaultLogLvl}, // should load config
{[]string{"--log-level=abc:info"}, nil, "abc:info"}, // flag over rides
{nil, map[string]string{"TM_LOG_LEVEL": "abc:info"}, "abc:info"}, // env over rides
}
for i, tc := range cases {
idxString := strconv.Itoa(i)
clearConfig(defaultRoot)
// XXX: path must match cfg.defaultConfigPath
configFilePath := filepath.Join(defaultRoot, "config")
err := tmos.EnsureDir(configFilePath, 0700)
require.Nil(t, err)
// write the non-defaults to a different path
// TODO: support writing sub configs so we can test that too
err = WriteConfigVals(configFilePath, cvals)
require.Nil(t, err)
rootCmd := testRootCmd()
cmd := cli.PrepareBaseCmd(rootCmd, "TM", defaultRoot)
// run with the args and env
tc.args = append([]string{rootCmd.Use}, tc.args...)
err = cli.RunWithArgs(cmd, tc.args, tc.env)
require.Nil(t, err, idxString)
assert.Equal(t, tc.logLvl, config.LogLevel, idxString)
}
}
// WriteConfigVals writes a toml file with the given values.
// It returns an error if writing was impossible.
func WriteConfigVals(dir string, vals map[string]string) error {
data := ""
for k, v := range vals {
data += fmt.Sprintf("%s = \"%s\"\n", k, v)
}
cfile := filepath.Join(dir, "config.toml")
return ioutil.WriteFile(cfile, []byte(data), 0600)
}