// Test when parsing invalid types.
// env.Parse should return an *env.ErrInvalidInterface.
func TestInvalidInterfaces(t *testing.T) {
values := []interface{}{
"string type",
1234,
float32(4321.12),
true,
nil,
SupportedTypes{},
}
for _, v := range values {
// Parse by value
if err := env.Parse(v); err == nil {
t.Errorf("Accepting invalid type:", reflect.TypeOf(v))
} else if err != env.ErrInvalidInterface {
t.Fatal("Error should be of *env.ErrInvalidInterface but was:", reflect.TypeOf(v))
}
// Parse by reference
if err := env.Parse(&v); err == nil {
t.Errorf("env.Parse accepting invalid type by reference:", reflect.TypeOf(&v))
} else if err != env.ErrInvalidInterface {
t.Fatal("Error should be of *env.ErrInvalidInterface but was:", reflect.TypeOf(v))
}
}
}
func NewConfig() *Config {
var (
adminAppFolder string
err error
cfg = &Config{
DbLogMode: false,
NoReplyEmail: "*****@*****.**",
}
)
if err = env.Parse(cfg); err != nil {
log.Fatalln(err)
}
if cfg.App.Env == "DEV" {
adminAppFolder = "app"
} else {
adminAppFolder = "dist"
}
cfg.App.Frontend.Admin = path.Join("frontend/admin", adminAppFolder)
return cfg
}
// Test a struct with no env or envDefault tags set.
// It should not set any values to it and the values in the struct
// should be the default values that Go sets up.
func TestNoTagsSet(t *testing.T) {
s := &NoTagValues{}
if err := env.Parse(s); err != nil {
t.Fatalf("Error parsing struct with no tags set: %v", err.Error())
}
if s.BoolType != false {
t.Errorf("Test default values: bool value was not set properly. Expected: [%v] but was [%v]", false, s.BoolType)
}
if s.FloatType != 0 {
t.Errorf("Test default values: float value was not set properly. Expected: [%v] but was [%v]", 0, s.FloatType)
}
if s.IntType != 0 {
t.Errorf("Test default values: int value was not set properly. Expected: [%v] but was [%v]", 0, s.IntType)
}
if s.StringType != "" {
t.Errorf("Test default values: string value was not set properly. Expected: [%v] but was [%v]", "", s.StringType)
}
if s.AnotherStruct.FloatType != 0 {
t.Errorf("Test default values: float value was not set properly. Expected: [%v] but was [%v]", 0, s.AnotherStruct.FloatType)
}
if s.AnotherStruct.IntType != 0 {
t.Errorf("Test default values: int value was not set properly. Expected: [%v] but was [%v]", 0, s.AnotherStruct.IntType)
}
}
// Test when parsing a struct that has an unaccesible/unexported field struct.
func TestRecursiveUnaccesibleStruct(t *testing.T) {
var err error
s := &RecursiveUnexportedStruct{}
if err = env.Parse(s); err != nil {
_, ok := err.(env.ErrFieldMustBeAssignable)
if ok {
return
}
}
t.Errorf("Expected: [*env.FieldMustBeAssignable] but got: [%s] ", err)
}
// Test a struct with a unsupported type
// It should return a *ErrUnsupportedFieldKind.
func TestUnSupportedField(t *testing.T) {
var err error
s := &UnSupportedField{}
if err = env.Parse(s); err != nil {
_, ok := err.(*env.ErrUnsupportedFieldKind)
if ok {
return
}
}
t.Errorf("Expected: [*env.ErrUnsupportedFieldKind] but got: [%s] ", err)
}
// Test a struct with no accesible fields.
// It should return a *ErrFieldMustBeAssignable.
func TestNonAssignableFields(t *testing.T) {
var err error
s := &NonaccesibleFields{}
if err = env.Parse(s); err != nil {
_, ok := err.(env.ErrFieldMustBeAssignable)
if ok {
return
}
}
t.Errorf("Expected: [*env.FieldMustBeAssignable] but got: [%s] ", err)
}
func main() {
config := &AppConfig{}
log.Println("Stating server...")
env.Parse(config)
log.Println("Server port:", config.Port)
log.Println("App environment:", config.Env)
templatesFilesHandler := http.FileServer(http.Dir("html/templates"))
staticFilesHandler := noDirListing(http.FileServer(http.Dir("html/static/")))
http.Handle("/", templatesFilesHandler)
http.Handle("/static/", http.StripPrefix("/static/", staticFilesHandler))
log.Println("Listening...")
http.ListenAndServe(fmt.Sprintf(":%d", config.Port), nil)
}
// Test when parsing a struct that has an struct. Values should be set
// recursively into the embedded struct.
func TestRecursiveStructs(t *testing.T) {
s := &RecursiveStruct{}
if err := env.Parse(s); err != nil {
t.Fatalf("Parsing struct by reference: %v", err.Error())
}
if s.StringType != defaultString {
t.Errorf("Test recursive structs: string value was not set properly. Expected: [%v] but was [%v]", defaultString, s.StringType)
}
if s.AnotherStruct.IntType != defaultInt {
t.Errorf("Test recursive structs: int value was not set properly. Expected: [%v] but was [%v]", defaultInt, s.AnotherStruct.IntType)
}
if s.AnotherStruct.FloatType != defaultFloat {
t.Errorf("Test recursive structs: float value was not set properly. Expected: [%v] but was [%v]", defaultFloat, s.AnotherStruct.FloatType)
}
}
// Test a struct with no env value set.
// It should set the default values of the structure to the fields.
func TestEnvDefaultValues(t *testing.T) {
s := &SupportedTypes{}
if err := env.Parse(s); err != nil {
t.Fatalf("Parsing struct by reference: %v", err.Error())
}
if s.BoolType != defaultBool {
t.Errorf("Test envDefault values: bool value was not set properly. Expected: [%v] but was [%v]", defaultBool, s.BoolType)
}
if s.FloatType != defaultFloat {
t.Errorf("Test envDefault values: float value was not set properly. Expected: [%v] but was [%v]", defaultFloat, s.FloatType)
}
if s.IntType != defaultInt {
t.Errorf("Test envDefault values: int value was not set properly. Expected: [%v] but was [%v]", defaultInt, s.IntType)
}
if s.StringType != defaultString {
t.Errorf("Test envDefault values: string value was not set properly. Expected: [%v] but was [%v]", defaultString, s.StringType)
}
}
// Test when parsing env variables into a struct.
// It should set the env values into the structure.
func TestEnvironmentValues(t *testing.T) {
stringVar := "string value"
intVar := 6789
floatVar := float32(1234.56)
boolVar := true
s := &SupportedTypes{}
os.Setenv("STRING_VAR", stringVar)
os.Setenv("INT_VAR", fmt.Sprintf("%d", intVar))
os.Setenv("FLOAT_VAR", fmt.Sprintf("%f", floatVar))
os.Setenv("BOOL_VAR", fmt.Sprintf("%t", boolVar))
defer func() {
syscall.Clearenv()
}()
if err := env.Parse(s); err != nil {
t.Fatal(err.Error())
}
if s.BoolType != boolVar {
t.Errorf("Test env values: bool value was not set properly. Expected: [%v] but was [%v]", boolVar, s.BoolType)
}
if s.FloatType != floatVar {
t.Errorf("Test env values: float value was not set properly. Expected: [%v] but was [%v]", floatVar, s.FloatType)
}
if s.IntType != intVar {
t.Errorf("Test env values: int value was not set properly. Expected: [%v] but was [%v]", intVar, s.IntType)
}
if s.StringType != stringVar {
t.Errorf("Test env values: string value was not set properly. Expected: [%v] but was [%v]", stringVar, s.StringType)
}
}