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// Copyright 2018 Garrett D'Amore
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package encoding
import (
"bytes"
"testing"
"unicode/utf8"
"golang.org/x/text/encoding"
)
func verifyMap(t *testing.T, enc encoding.Encoding, b byte, r rune) {
verifyFromUTF(t, enc, b, r)
verifyToUTF(t, enc, b, r)
}
func verifyFromUTF(t *testing.T, enc encoding.Encoding, b byte, r rune) {
encoder := enc.NewEncoder()
out := make([]byte, 6)
utf := make([]byte, utf8.RuneLen(r))
utf8.EncodeRune(utf, r)
ndst, nsrc, err := encoder.Transform(out, utf, true)
if err != nil {
t.Errorf("Transform failed: %v", err)
}
if nsrc != len(utf) {
t.Errorf("Length of source incorrect: %d != %d", nsrc, len(utf))
}
if ndst != 1 {
t.Errorf("Dest length (%d) != 1", ndst)
}
if b != out[0] {
t.Errorf("From UTF incorrect map %v != %v", b, out[0])
}
}
func verifyToUTF(t *testing.T, enc encoding.Encoding, b byte, r rune) {
decoder := enc.NewDecoder()
out := make([]byte, 6)
nat := []byte{b}
utf := make([]byte, utf8.RuneLen(r))
utf8.EncodeRune(utf, r)
ndst, nsrc, err := decoder.Transform(out, nat, true)
if err != nil {
t.Errorf("Transform failed: %v", err)
}
if nsrc != 1 {
t.Errorf("Src length (%d) != 1", nsrc)
}
if !bytes.Equal(utf, out[:ndst]) {
t.Errorf("UTF expected %v, but got %v for %x\n", utf, out, b)
}
}
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