/
options_test.go
58 lines (50 loc) · 1.15 KB
/
options_test.go
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package httptrace
import (
"os"
"testing"
"github.com/stretchr/testify/require"
)
func TestConfig(t *testing.T) {
t.Run("config", func(t *testing.T) {
t.Run("client-ip-header-unset", func(t *testing.T) {
cfg := newConfig()
require.Empty(t, cfg.ipHeader)
})
t.Run("client-ip-header-empty", func(t *testing.T) {
restore := cleanEnv()
err := os.Setenv(clientIPHeaderEnvVar, "")
require.NoError(t, err)
cfg := newConfig()
require.Empty(t, cfg.ipHeader)
defer restore()
})
t.Run("client-ip-header-set", func(t *testing.T) {
restore := cleanEnv()
err := os.Setenv(clientIPHeaderEnvVar, "custom-header")
require.NoError(t, err)
cfg := newConfig()
require.Equal(t, "custom-header", cfg.ipHeader)
defer restore()
})
})
}
func cleanEnv() func() {
val := os.Getenv(clientIPHeaderEnvVar)
if err := os.Unsetenv(clientIPHeaderEnvVar); err != nil {
panic(err)
}
return func() {
restoreEnv(clientIPHeaderEnvVar, val)
}
}
func restoreEnv(key, value string) {
if value != "" {
if err := os.Setenv(key, value); err != nil {
panic(err)
}
} else {
if err := os.Unsetenv(key); err != nil {
panic(err)
}
}
}