429 lines
10 KiB
Go
429 lines
10 KiB
Go
// +build !js,!appengine
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package runewidth
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import (
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"crypto/sha256"
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"fmt"
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"os"
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"sort"
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"testing"
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"unicode/utf8"
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)
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var _ sort.Interface = (*table)(nil) // ensure that type "table" does implement sort.Interface
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func init() {
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os.Setenv("RUNEWIDTH_EASTASIAN", "")
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handleEnv()
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}
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func (t table) Len() int {
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return len(t)
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}
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func (t table) Less(i, j int) bool {
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return t[i].first < t[j].first
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}
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func (t *table) Swap(i, j int) {
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(*t)[i], (*t)[j] = (*t)[j], (*t)[i]
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}
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type tableInfo struct {
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tbl table
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name string
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wantN int
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wantSHA string
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}
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var tables = []tableInfo{
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{private, "private", 137468, "a4a641206dc8c5de80bd9f03515a54a706a5a4904c7684dc6a33d65c967a51b2"},
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{nonprint, "nonprint", 2143, "288904683eb225e7c4c0bd3ee481b53e8dace404ec31d443afdbc4d13729fe95"},
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{combining, "combining", 465, "3cce13deb5e23f9f7327f2b1ef162328285a7dcf277a98302a8f7cdd43971268"},
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{doublewidth, "doublewidth", 182440, "3d16eda8650dc2c92d6318d32f0b4a74fda5a278db2d4544b1dd65863394823c"},
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{ambiguous, "ambiguous", 138739, "d05e339a10f296de6547ff3d6c5aee32f627f6555477afebd4a3b7e3cf74c9e3"},
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{emoji, "emoji", 3535, "9ec17351601d49c535658de8d129c1d0ccda2e620669fc39a2faaee7dedcef6d"},
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{notassigned, "notassigned", 10, "68441e98eca1450efbe857ac051fcc872eed347054dfd0bc662d1c4ee021d69f"},
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{neutral, "neutral", 27333, "5455f5e75c307f70b4e9b2384dc5a8bcd91a4c5e2b24b2b185dfad4d860ee5c2"},
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}
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func TestTableChecksums(t *testing.T) {
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for _, ti := range tables {
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gotN := 0
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buf := make([]byte, utf8.MaxRune+1)
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for r := rune(0); r <= utf8.MaxRune; r++ {
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if inTable(r, ti.tbl) {
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gotN++
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buf[r] = 1
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}
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}
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gotSHA := fmt.Sprintf("%x", sha256.Sum256(buf))
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if gotN != ti.wantN || gotSHA != ti.wantSHA {
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t.Errorf("table = %s,\n\tn = %d want %d,\n\tsha256 = %s want %s", ti.name, gotN, ti.wantN, gotSHA, ti.wantSHA)
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}
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}
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}
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func checkInterval(first, last rune) bool {
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return first >= 0 && first <= utf8.MaxRune &&
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last >= 0 && last <= utf8.MaxRune &&
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first <= last
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}
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func isCompact(t *testing.T, ti *tableInfo) bool {
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tbl := ti.tbl
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for i := range tbl {
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e := tbl[i]
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if !checkInterval(e.first, e.last) { // sanity check
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t.Errorf("table invalid: table = %s index = %d %v", ti.name, i, e)
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return false
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}
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if i+1 < len(tbl) && e.last+1 >= tbl[i+1].first { // can be combined into one entry
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t.Errorf("table not compact: table = %s index = %d %v %v", ti.name, i, e, tbl[i+1])
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return false
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}
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}
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return true
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}
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// This is a utility function in case that a table has changed.
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func printCompactTable(tbl table) {
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counter := 0
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printEntry := func(first, last rune) {
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if counter%3 == 0 {
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fmt.Printf("\t")
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}
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fmt.Printf("{0x%04X, 0x%04X},", first, last)
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if (counter+1)%3 == 0 {
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fmt.Printf("\n")
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} else {
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fmt.Printf(" ")
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}
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counter++
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}
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sort.Sort(&tbl) // just in case
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first := rune(-1)
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for i := range tbl {
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e := tbl[i]
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if !checkInterval(e.first, e.last) { // sanity check
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panic("invalid table")
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}
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if first < 0 {
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first = e.first
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}
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if i+1 < len(tbl) && e.last+1 >= tbl[i+1].first { // can be combined into one entry
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continue
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}
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printEntry(first, e.last)
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first = -1
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}
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fmt.Printf("\n\n")
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}
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func TestSorted(t *testing.T) {
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for _, ti := range tables {
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if !sort.IsSorted(&ti.tbl) {
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t.Errorf("table not sorted: %s", ti.name)
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}
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if !isCompact(t, &ti) {
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t.Errorf("table not compact: %s", ti.name)
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//printCompactTable(ti.tbl)
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}
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}
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}
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var runewidthtests = []struct {
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in rune
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out int
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eaout int
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}{
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{'世', 2, 2},
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{'界', 2, 2},
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{'ｾ', 1, 1},
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{'ｶ', 1, 1},
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{'ｲ', 1, 1},
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{'☆', 1, 2}, // double width in ambiguous
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{'☺', 1, 1},
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{'☻', 1, 1},
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{'♥', 1, 2},
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{'♦', 1, 1},
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{'♣', 1, 2},
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{'♠', 1, 2},
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{'♂', 1, 2},
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{'♀', 1, 2},
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{'♪', 1, 2},
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{'♫', 1, 1},
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{'☼', 1, 1},
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{'↕', 1, 2},
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{'‼', 1, 1},
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{'↔', 1, 2},
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{'\x00', 0, 0},
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{'\x01', 0, 0},
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{'\u0300', 0, 0},
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{'\u2028', 0, 0},
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{'\u2029', 0, 0},
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}
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func TestRuneWidth(t *testing.T) {
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c := NewCondition()
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c.EastAsianWidth = false
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for _, tt := range runewidthtests {
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if out := c.RuneWidth(tt.in); out != tt.out {
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t.Errorf("RuneWidth(%q) = %d, want %d", tt.in, out, tt.out)
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}
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}
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c.EastAsianWidth = true
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for _, tt := range runewidthtests {
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if out := c.RuneWidth(tt.in); out != tt.eaout {
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t.Errorf("RuneWidth(%q) = %d, want %d", tt.in, out, tt.eaout)
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}
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}
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}
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var isambiguouswidthtests = []struct {
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in rune
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out bool
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}{
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{'世', false},
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{'■', true},
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{'界', false},
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{'○', true},
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{'㈱', false},
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{'①', true},
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{'②', true},
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{'③', true},
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{'④', true},
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{'⑤', true},
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{'⑥', true},
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{'⑦', true},
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{'⑧', true},
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{'⑨', true},
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{'⑩', true},
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{'⑪', true},
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{'⑫', true},
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{'⑬', true},
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{'⑭', true},
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{'⑮', true},
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{'⑯', true},
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{'⑰', true},
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{'⑱', true},
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{'⑲', true},
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{'⑳', true},
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{'☆', true},
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}
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func TestIsAmbiguousWidth(t *testing.T) {
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for _, tt := range isambiguouswidthtests {
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if out := IsAmbiguousWidth(tt.in); out != tt.out {
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t.Errorf("IsAmbiguousWidth(%q) = %v, want %v", tt.in, out, tt.out)
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}
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}
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}
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var stringwidthtests = []struct {
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in string
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out int
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eaout int
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}{
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{"■㈱の世界①", 10, 12},
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{"スター☆", 7, 8},
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{"つのだ☆HIRO", 11, 12},
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}
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func TestStringWidth(t *testing.T) {
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c := NewCondition()
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c.EastAsianWidth = false
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for _, tt := range stringwidthtests {
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if out := c.StringWidth(tt.in); out != tt.out {
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t.Errorf("StringWidth(%q) = %d, want %d", tt.in, out, tt.out)
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}
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}
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c.EastAsianWidth = true
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for _, tt := range stringwidthtests {
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if out := c.StringWidth(tt.in); out != tt.eaout {
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t.Errorf("StringWidth(%q) = %d, want %d", tt.in, out, tt.eaout)
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}
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}
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}
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func TestStringWidthInvalid(t *testing.T) {
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s := "こんにちわ\x00世界"
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if out := StringWidth(s); out != 14 {
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t.Errorf("StringWidth(%q) = %d, want %d", s, out, 14)
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}
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}
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func TestTruncateSmaller(t *testing.T) {
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s := "あいうえお"
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expected := "あいうえお"
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if out := Truncate(s, 10, "..."); out != expected {
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t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
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}
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}
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func TestTruncate(t *testing.T) {
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s := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
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expected := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおお..."
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out := Truncate(s, 80, "...")
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if out != expected {
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t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
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}
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width := StringWidth(out)
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if width != 79 {
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t.Errorf("width of Truncate(%q) should be %d, but %d", s, 79, width)
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}
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}
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func TestTruncateFit(t *testing.T) {
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s := "aあいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
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expected := "aあいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおお..."
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out := Truncate(s, 80, "...")
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if out != expected {
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t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
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}
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width := StringWidth(out)
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if width != 80 {
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t.Errorf("width of Truncate(%q) should be %d, but %d", s, 80, width)
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}
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}
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func TestTruncateJustFit(t *testing.T) {
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s := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
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expected := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
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out := Truncate(s, 80, "...")
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if out != expected {
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t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
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}
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width := StringWidth(out)
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if width != 80 {
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t.Errorf("width of Truncate(%q) should be %d, but %d", s, 80, width)
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}
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}
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func TestWrap(t *testing.T) {
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s := `東京特許許可局局長はよく柿喰う客だ/東京特許許可局局長はよく柿喰う客だ
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123456789012345678901234567890
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END`
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expected := `東京特許許可局局長はよく柿喰う
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客だ/東京特許許可局局長はよく
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柿喰う客だ
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123456789012345678901234567890
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END`
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if out := Wrap(s, 30); out != expected {
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t.Errorf("Wrap(%q) = %q, want %q", s, out, expected)
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}
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}
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func TestTruncateNoNeeded(t *testing.T) {
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s := "あいうえおあい"
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expected := "あいうえおあい"
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if out := Truncate(s, 80, "..."); out != expected {
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t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
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}
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}
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var isneutralwidthtests = []struct {
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in rune
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out bool
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}{
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{'→', false},
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{'┊', false},
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{'┈', false},
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{'～', false},
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{'└', false},
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{'⣀', true},
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{'⣀', true},
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}
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func TestIsNeutralWidth(t *testing.T) {
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for _, tt := range isneutralwidthtests {
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if out := IsNeutralWidth(tt.in); out != tt.out {
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t.Errorf("IsNeutralWidth(%q) = %v, want %v", tt.in, out, tt.out)
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}
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}
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}
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func TestFillLeft(t *testing.T) {
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s := "あxいうえお"
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expected := " あxいうえお"
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if out := FillLeft(s, 15); out != expected {
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t.Errorf("FillLeft(%q) = %q, want %q", s, out, expected)
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}
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}
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func TestFillLeftFit(t *testing.T) {
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s := "あいうえお"
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expected := "あいうえお"
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if out := FillLeft(s, 10); out != expected {
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t.Errorf("FillLeft(%q) = %q, want %q", s, out, expected)
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}
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}
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func TestFillRight(t *testing.T) {
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s := "あxいうえお"
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expected := "あxいうえお "
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if out := FillRight(s, 15); out != expected {
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t.Errorf("FillRight(%q) = %q, want %q", s, out, expected)
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}
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}
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func TestFillRightFit(t *testing.T) {
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s := "あいうえお"
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expected := "あいうえお"
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if out := FillRight(s, 10); out != expected {
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t.Errorf("FillRight(%q) = %q, want %q", s, out, expected)
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}
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}
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func TestEnv(t *testing.T) {
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old := os.Getenv("RUNEWIDTH_EASTASIAN")
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defer os.Setenv("RUNEWIDTH_EASTASIAN", old)
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os.Setenv("RUNEWIDTH_EASTASIAN", "0")
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handleEnv()
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if w := RuneWidth('│'); w != 1 {
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t.Errorf("RuneWidth('│') = %d, want %d", w, 1)
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}
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}
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func TestZeroWidthJointer(t *testing.T) {
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c := NewCondition()
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c.ZeroWidthJoiner = true
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var tests = []struct {
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in string
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want int
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}{
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{"👩", 2},
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{"👩", 2},
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{"👩🍳", 2},
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{"🍳", 2},
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{"👨👨", 2},
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{"👨👨👧", 2},
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{"🏳️🌈", 2},
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{"あ👩🍳い", 6},
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{"あ🍳い", 6},
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{"あい", 4},
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}
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for _, tt := range tests {
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if got := c.StringWidth(tt.in); got != tt.want {
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t.Errorf("StringWidth(%q) = %d, want %d", tt.in, got, tt.want)
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}
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}
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}
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