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package scalar
import (
"net"
"net/mail"
"net/url"
"reflect"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type textUnmarshaler struct {
val int
}
func (f *textUnmarshaler) UnmarshalText(b []byte) error {
f.val = len(b)
return nil
}
func assertParse(t *testing.T, expected interface{}, str string) {
v := reflect.New(reflect.TypeOf(expected)).Elem()
err := ParseValue(v, str)
if assert.NoError(t, err) {
assert.Equal(t, expected, v.Interface())
}
ptr := reflect.New(reflect.PtrTo(reflect.TypeOf(expected))).Elem()
err = ParseValue(ptr, str)
if assert.NoError(t, err) {
assert.Equal(t, expected, ptr.Elem().Interface())
}
assert.True(t, CanParse(v.Type()))
assert.True(t, CanParse(ptr.Type()))
}
func TestParseValue(t *testing.T) {
// strings
assertParse(t, "abc", "abc")
// booleans
assertParse(t, true, "true")
assertParse(t, false, "false")
// integers
assertParse(t, int(123), "123")
assertParse(t, int(123), "1_2_3")
assertParse(t, int8(123), "123")
assertParse(t, int16(123), "123")
assertParse(t, int32(123), "123")
assertParse(t, int64(123), "123")
// unsigned integers
assertParse(t, uint(123), "123")
assertParse(t, uint(123), "1_2_3")
assertParse(t, byte(123), "123")
assertParse(t, uint8(123), "123")
assertParse(t, uint16(123), "123")
assertParse(t, uint32(123), "123")
assertParse(t, uint64(123), "123")
assertParse(t, uintptr(123), "123")
assertParse(t, rune(123), "123")
// floats
assertParse(t, float32(123), "123")
assertParse(t, float64(123), "123")
// durations
assertParse(t, 3*time.Hour+15*time.Minute, "3h15m")
// IP addresses
assertParse(t, net.IPv4(1, 2, 3, 4), "1.2.3.4")
// email addresses
assertParse(t, mail.Address{Address: "[email protected]"}, "[email protected]")
// MAC addresses
assertParse(t, net.HardwareAddr("\x01\x23\x45\x67\x89\xab"), "01:23:45:67:89:ab")
// MAC addresses
assertParse(t, net.HardwareAddr("\x01\x23\x45\x67\x89\xab"), "01:23:45:67:89:ab")
// URL
assertParse(t, url.URL{Scheme: "https", Host: "example.com", Path: "/a/b/c"}, "https://example.com/a/b/c")
// custom text unmarshaler
assertParse(t, textUnmarshaler{3}, "abc")
}
func TestParseErrors(t *testing.T) {
var err error
// this should fail because the pointer is nil and will not be settable
var p *int
err = ParseValue(reflect.ValueOf(p), "123")
assert.Equal(t, errPtrNotSettable, err)
// this should fail because the value will not be settable
var v int
err = ParseValue(reflect.ValueOf(v), "123")
assert.Equal(t, errNotSettable, err)
// this should fail due to a malformed boolean
var b bool
err = ParseValue(reflect.ValueOf(&b), "malformed")
assert.Error(t, err)
// this should fail due to a malformed boolean
var i int
err = ParseValue(reflect.ValueOf(&i), "malformed")
assert.Error(t, err)
// this should fail due to a malformed boolean
var u uint
err = ParseValue(reflect.ValueOf(&u), "malformed")
assert.Error(t, err)
// this should fail due to a malformed boolean
var f float64
err = ParseValue(reflect.ValueOf(&f), "malformed")
assert.Error(t, err)
// this should fail due to a malformed time duration
var d time.Duration
err = ParseValue(reflect.ValueOf(&d), "malfomed")
assert.Error(t, err)
// this should fail due to a malformed email address
var email mail.Address
err = ParseValue(reflect.ValueOf(&email), "malfomed")
assert.Error(t, err)
// this should fail due to a malformed time duration
var mac net.HardwareAddr
err = ParseValue(reflect.ValueOf(&mac), "malfomed")
assert.Error(t, err)
// this should fail due to a malformed time duration
var url url.URL
err = ParseValue(reflect.ValueOf(&url), "$:")
assert.Error(t, err)
// this should fail due to an unsupported type
var x struct{}
err = ParseValue(reflect.ValueOf(&x), "$")
assert.Error(t, err)
}
func TestParse(t *testing.T) {
var v int
err := Parse(&v, "123")
require.NoError(t, err)
assert.Equal(t, 123, v)
}
func TestCanParseReturnsFalse(t *testing.T) {
var x struct{}
assert.Equal(t, false, CanParse(reflect.TypeOf(x)))
}
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