github.com/markusbkk/elvish@v0.0.0-20231204143114-91dc52438621/pkg/eval/vars/env_test.go (about)

     1  package vars
     2  
     3  import (
     4  	"os"
     5  	"testing"
     6  )
     7  
     8  func TestFromEnv(t *testing.T) {
     9  	name := "elvish_test"
    10  	v := FromEnv(name)
    11  	os.Setenv(name, "foo")
    12  	if v.Get() != "foo" {
    13  		t.Errorf("envVariable.Get doesn't return env value")
    14  	}
    15  
    16  	err := v.Set("bar")
    17  	if err != nil || os.Getenv(name) != "bar" {
    18  		t.Errorf("envVariable.Set doesn't alter env value")
    19  	}
    20  
    21  	err = v.Set(true)
    22  	if err != errEnvMustBeString {
    23  		t.Errorf("envVariable.Set to a non-string value didn't return an error")
    24  	}
    25  }