package encoding
import (
"testing"
)
func TestGet(t *testing.T) {
tests := []struct {
name string
wantOk bool
wantNil bool // true if encoding should be nil (UTF-8)
}{
{"utf-8", true, true},
{"UTF-8", true, true},
{"utf8", true, true},
{"windows-1251", true, false},
{"cp1251", true, false},
{"CP1251", true, false},
{"koi8-r", true, false},
{"utf-16-le", true, false},
{"utf-16-be", true, false},
{"utf16le", true, false},
{"utf16be", true, false},
{"invalid", false, false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
enc, ok := Get(tt.name)
if ok != tt.wantOk {
t.Errorf("Get(%q) ok = %v, want %v", tt.name, ok, tt.wantOk)
}
if tt.wantOk && tt.wantNil && enc != nil {
t.Errorf("Get(%q) = %v, want nil (UTF-8)", tt.name, enc)
}
if tt.wantOk && !tt.wantNil && enc == nil {
t.Errorf("Get(%q) = nil, want non-nil encoding", tt.name)
}
})
}
}
func TestIsUTF8(t *testing.T) {
tests := []struct {
name string
want bool
}{
{"utf-8", true},
{"UTF-8", true},
{"utf8", true},
{"ascii", true},
{"cp1251", false},
{"windows-1251", false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := IsUTF8(tt.name); got != tt.want {
t.Errorf("IsUTF8(%q) = %v, want %v", tt.name, got, tt.want)
}
})
}
}
func TestListEncodings(t *testing.T) {
items := ListEncodings()
if len(items) == 0 {
t.Fatal("ListEncodings() returned empty list")
}
// Check that items are sorted by DisplayName
for i := 1; i < len(items); i++ {
if items[i-1].DisplayName > items[i].DisplayName {
t.Errorf("ListEncodings not sorted: %q > %q", items[i-1].DisplayName, items[i].DisplayName)
}
}
// Verify we have the expected number of encodings (22)
if len(items) != 22 {
t.Errorf("ListEncodings() returned %d items, want 22", len(items))
}
}
