99 lines
1.7 KiB
Go
99 lines
1.7 KiB
Go
// +build !windows
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// +build !js
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// +build !appengine
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package runewidth
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import (
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"os"
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"testing"
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)
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type envVars struct {
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lang string
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lc_all string
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lc_ctype string
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}
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func saveEnv() envVars {
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return envVars{
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lang: os.Getenv("LANG"),
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lc_all: os.Getenv("LC_ALL"),
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lc_ctype: os.Getenv("LC_CTYPE"),
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}
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}
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func restoreEnv(env *envVars) {
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os.Setenv("LANG", env.lang)
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os.Setenv("LC_ALL", env.lc_all)
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os.Setenv("LC_CTYPE", env.lc_ctype)
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}
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func TestIsEastAsian(t *testing.T) {
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testcases := []struct {
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locale string
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want bool
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}{
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{"foo@cjk_narrow", false},
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{"foo@cjk", false},
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{"utf-8@cjk", false},
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{"ja_JP.CP932", true},
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}
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for _, tt := range testcases {
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got := isEastAsian(tt.locale)
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if got != tt.want {
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t.Fatalf("isEastAsian(%q) should be %v", tt.locale, tt.want)
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}
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}
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}
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func TestIsEastAsianLCCTYPE(t *testing.T) {
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env := saveEnv()
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defer restoreEnv(&env)
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os.Setenv("LC_ALL", "")
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testcases := []struct {
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lcctype string
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want bool
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}{
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{"ja_JP.UTF-8", true},
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{"C", false},
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{"POSIX", false},
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{"en_US.UTF-8", false},
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}
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for _, tt := range testcases {
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os.Setenv("LC_CTYPE", tt.lcctype)
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got := IsEastAsian()
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if got != tt.want {
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t.Fatalf("IsEastAsian() for LC_CTYPE=%v should be %v", tt.lcctype, tt.want)
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}
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}
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}
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func TestIsEastAsianLANG(t *testing.T) {
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env := saveEnv()
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defer restoreEnv(&env)
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os.Setenv("LC_ALL", "")
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os.Setenv("LC_CTYPE", "")
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testcases := []struct {
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lcctype string
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want bool
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}{
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{"ja_JP.UTF-8", true},
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{"C", false},
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{"POSIX", false},
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{"en_US.UTF-8", false},
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{"C.UTF-8", false},
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}
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for _, tt := range testcases {
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os.Setenv("LANG", tt.lcctype)
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got := IsEastAsian()
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if got != tt.want {
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t.Fatalf("IsEastAsian() for LANG=%v should be %v", tt.lcctype, tt.want)
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}
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}
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}
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