go-common/library/conf/env/env_test.go

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2019-04-22 10:49:16 +00:00
package env
import (
"flag"
"fmt"
"os"
"testing"
)
func TestDefaultString(t *testing.T) {
v := defaultString("a", "test")
if v != "test" {
t.Fatal("v must be test")
}
if err := os.Setenv("a", "test1"); err != nil {
t.Fatal(err)
}
v = defaultString("a", "test")
if v != "test1" {
t.Fatal("v must be test1")
}
}
func TestEnv(t *testing.T) {
tests := []struct {
flag string
env string
def string
val *string
}{
{
"region",
"REGION",
_region,
&Region,
},
{
"zone",
"ZONE",
_zone,
&Zone,
},
{
"deploy.env",
"DEPLOY_ENV",
_deployEnv,
&DeployEnv,
},
{
"appid",
"APP_ID",
"",
&AppID,
},
{
"http.port",
"DISCOVERY_HTTP_PORT",
_httpPort,
&HTTPPort,
},
{
"gorpc.port",
"DISCOVERY_GORPC_PORT",
_gorpcPort,
&GORPCPort,
},
{
"grpc.port",
"DISCOVERY_GRPC_PORT",
_grpcPort,
&GRPCPort,
},
{
"deploy.color",
"DEPLOY_COLOR",
"",
&Color,
},
}
for _, test := range tests {
// flag set value
t.Run(fmt.Sprintf("%s: flag set", test.env), func(t *testing.T) {
fs := flag.NewFlagSet("", flag.ContinueOnError)
addFlag(fs)
err := fs.Parse([]string{fmt.Sprintf("-%s=%s", test.flag, "test")})
if err != nil {
t.Fatal(err)
}
if *test.val != "test" {
t.Fatal("val must be test")
}
})
// flag not set, env set
t.Run(fmt.Sprintf("%s: flag not set, env set", test.env), func(t *testing.T) {
*test.val = ""
os.Setenv(test.env, "test2")
fs := flag.NewFlagSet("", flag.ContinueOnError)
addFlag(fs)
err := fs.Parse([]string{})
if err != nil {
t.Fatal(err)
}
if *test.val != "test2" {
t.Fatal("val must be test")
}
})
// flag not set, env not set
t.Run(fmt.Sprintf("%s: flag not set, env not set", test.env), func(t *testing.T) {
*test.val = ""
os.Setenv(test.env, "")
fs := flag.NewFlagSet("", flag.ContinueOnError)
addFlag(fs)
err := fs.Parse([]string{})
if err != nil {
t.Fatal(err)
}
if *test.val != test.def {
t.Fatal("val must be test")
}
})
}
}