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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package currency
import (
"fmt"
"testing"
"golang.org/x/text/internal/testtext"
"golang.org/x/text/language"
)
var (
cup = MustParseISO("CUP")
czk = MustParseISO("CZK")
xcd = MustParseISO("XCD")
zwr = MustParseISO("ZWR")
)
func TestParseISO(t *testing.T) {
testCases := []struct {
in string
out Unit
ok bool
}{
{"USD", USD, true},
{"xxx", XXX, true},
{"xts", XTS, true},
{"XX", XXX, false},
{"XXXX", XXX, false},
{"", XXX, false}, // not well-formed
{"UUU", XXX, false}, // unknown
{"\u22A9", XXX, false}, // non-ASCII, printable
{"aaa", XXX, false},
{"zzz", XXX, false},
{"000", XXX, false},
{"999", XXX, false},
{"---", XXX, false},
{"\x00\x00\x00", XXX, false},
{"\xff\xff\xff", XXX, false},
}
for i, tc := range testCases {
if x, err := ParseISO(tc.in); x != tc.out || err == nil != tc.ok {
t.Errorf("%d:%s: was %s, %v; want %s, %v", i, tc.in, x, err == nil, tc.out, tc.ok)
}
}
}
func TestFromRegion(t *testing.T) {
testCases := []struct {
region string
currency Unit
ok bool
}{
{"NL", EUR, true},
{"BE", EUR, true},
{"AG", xcd, true},
{"CH", CHF, true},
{"CU", cup, true}, // first of multiple
{"DG", USD, true}, // does not have M49 code
{"150", XXX, false}, // implicit false
{"CP", XXX, false}, // explicit false in CLDR
{"CS", XXX, false}, // all expired
{"ZZ", XXX, false}, // none match
}
for _, tc := range testCases {
cur, ok := FromRegion(language.MustParseRegion(tc.region))
if cur != tc.currency || ok != tc.ok {
t.Errorf("%s: got %v, %v; want %v, %v", tc.region, cur, ok, tc.currency, tc.ok)
}
}
}
func TestFromTag(t *testing.T) {
testCases := []struct {
tag string
currency Unit
conf language.Confidence
}{
{"nl", EUR, language.Low}, // nl also spoken outside Euro land.
{"nl-BE", EUR, language.Exact}, // region is known
{"pt", BRL, language.Low},
{"en", USD, language.Low},
{"en-u-cu-eur", EUR, language.Exact},
{"tlh", XXX, language.No}, // Klingon has no country.
{"es-419", XXX, language.No},
{"und", USD, language.Low},
}
for _, tc := range testCases {
cur, conf := FromTag(language.MustParse(tc.tag))
if cur != tc.currency || conf != tc.conf {
t.Errorf("%s: got %v, %v; want %v, %v", tc.tag, cur, conf, tc.currency, tc.conf)
}
}
}
func TestTable(t *testing.T) {
for i := 4; i < len(currency); i += 4 {
if a, b := currency[i-4:i-1], currency[i:i+3]; a >= b {
t.Errorf("currency unordered at element %d: %s >= %s", i, a, b)
}
}
// First currency has index 1, last is numCurrencies.
if c := currency.Elem(1)[:3]; c != "ADP" {
t.Errorf("first was %q; want ADP", c)
}
if c := currency.Elem(numCurrencies)[:3]; c != "ZWR" {
t.Errorf("last was %q; want ZWR", c)
}
}
func TestKindRounding(t *testing.T) {
testCases := []struct {
kind Kind
cur Unit
scale int
inc int
}{
{Standard, USD, 2, 1},
{Standard, CHF, 2, 1},
{Cash, CHF, 2, 5},
{Standard, TWD, 2, 1},
{Cash, TWD, 0, 1},
{Standard, czk, 2, 1},
{Cash, czk, 0, 1},
{Standard, zwr, 2, 1},
{Cash, zwr, 0, 1},
{Standard, KRW, 0, 1},
{Cash, KRW, 0, 1}, // Cash defaults to standard.
}
for i, tc := range testCases {
if scale, inc := tc.kind.Rounding(tc.cur); scale != tc.scale && inc != tc.inc {
t.Errorf("%d: got %d, %d; want %d, %d", i, scale, inc, tc.scale, tc.inc)
}
}
}
const body = `package main
import (
"fmt"
"golang.org/x/text/currency"
)
func main() {
%s
}
`
func TestLinking(t *testing.T) {
t.Skip("skipping flaky test; see golang.org/issue/17538")
base := getSize(t, `fmt.Print(currency.CLDRVersion)`)
symbols := getSize(t, `fmt.Print(currency.Symbol(currency.USD))`)
if d := symbols - base; d < 2*1024 {
t.Errorf("size(symbols)-size(base) was %d; want > 2K", d)
}
}
func getSize(t *testing.T, main string) int {
size, err := testtext.CodeSize(fmt.Sprintf(body, main))
if err != nil {
t.Skipf("skipping link size test; binary size could not be determined: %v", err)
}
return size
}
func BenchmarkString(b *testing.B) {
for i := 0; i < b.N; i++ {
USD.String()
}
}