mirror of
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665 lines
14 KiB
Go
665 lines
14 KiB
Go
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runes
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import (
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"strings"
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"testing"
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"unicode/utf8"
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"golang.org/x/text/internal/testtext"
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"golang.org/x/text/transform"
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)
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type transformTest struct {
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desc string
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szDst int
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atEOF bool
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repl string
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in string
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out string // result string of first call to Transform
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outFull string // transform of entire input string
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err error
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errSpan error
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nSpan int
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t transform.SpanningTransformer
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}
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const large = 10240
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func (tt *transformTest) check(t *testing.T, i int) {
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if tt.t == nil {
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return
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}
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dst := make([]byte, tt.szDst)
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src := []byte(tt.in)
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nDst, nSrc, err := tt.t.Transform(dst, src, tt.atEOF)
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if err != tt.err {
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t.Errorf("%d:%s:error: got %v; want %v", i, tt.desc, err, tt.err)
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}
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if got := string(dst[:nDst]); got != tt.out {
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t.Errorf("%d:%s:out: got %q; want %q", i, tt.desc, got, tt.out)
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}
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// Calls tt.t.Transform for the remainder of the input. We use this to test
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// the nSrc return value.
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out := make([]byte, large)
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n := copy(out, dst[:nDst])
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nDst, _, _ = tt.t.Transform(out[n:], src[nSrc:], true)
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if got, want := string(out[:n+nDst]), tt.outFull; got != want {
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t.Errorf("%d:%s:outFull: got %q; want %q", i, tt.desc, got, want)
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}
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tt.t.Reset()
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p := 0
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for ; p < len(tt.in) && p < len(tt.outFull) && tt.in[p] == tt.outFull[p]; p++ {
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}
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if tt.nSpan != 0 {
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p = tt.nSpan
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}
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if n, err = tt.t.Span([]byte(tt.in), tt.atEOF); n != p || err != tt.errSpan {
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t.Errorf("%d:%s:span: got %d, %v; want %d, %v", i, tt.desc, n, err, p, tt.errSpan)
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}
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}
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func idem(r rune) rune { return r }
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func TestMap(t *testing.T) {
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runes := []rune{'a', 'ç', '中', '\U00012345', 'a'}
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// Default mapper used for this test.
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rotate := Map(func(r rune) rune {
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for i, m := range runes {
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if m == r {
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return runes[i+1]
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}
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}
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return r
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})
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for i, tt := range []transformTest{{
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desc: "empty",
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szDst: large,
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atEOF: true,
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in: "",
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out: "",
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outFull: "",
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t: rotate,
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}, {
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desc: "no change",
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szDst: 1,
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atEOF: true,
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in: "b",
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out: "b",
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outFull: "b",
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t: rotate,
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}, {
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desc: "short dst",
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szDst: 2,
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atEOF: true,
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in: "aaaa",
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out: "ç",
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outFull: "çççç",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "short dst ascii, no change",
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szDst: 2,
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atEOF: true,
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in: "bbb",
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out: "bb",
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outFull: "bbb",
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err: transform.ErrShortDst,
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t: rotate,
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}, {
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desc: "short dst writing error",
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szDst: 2,
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atEOF: false,
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in: "a\x80",
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out: "ç",
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outFull: "ç\ufffd",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "short dst writing incomplete rune",
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szDst: 2,
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atEOF: true,
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in: "a\xc0",
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out: "ç",
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outFull: "ç\ufffd",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "short dst, longer",
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szDst: 5,
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atEOF: true,
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in: "Hellø",
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out: "Hell",
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outFull: "Hellø",
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err: transform.ErrShortDst,
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t: rotate,
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}, {
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desc: "short dst, single",
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szDst: 1,
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atEOF: false,
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in: "ø",
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out: "",
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outFull: "ø",
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err: transform.ErrShortDst,
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t: Map(idem),
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}, {
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desc: "short dst, longer, writing error",
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szDst: 8,
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atEOF: false,
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in: "\x80Hello\x80",
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out: "\ufffdHello",
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outFull: "\ufffdHello\ufffd",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "short src",
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szDst: 2,
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atEOF: false,
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in: "a\xc2",
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out: "ç",
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outFull: "ç\ufffd",
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err: transform.ErrShortSrc,
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "invalid input, atEOF",
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szDst: large,
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atEOF: true,
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in: "\x80",
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out: "\ufffd",
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outFull: "\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "invalid input, !atEOF",
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szDst: large,
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atEOF: false,
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in: "\x80",
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out: "\ufffd",
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outFull: "\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "incomplete rune !atEOF",
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szDst: large,
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atEOF: false,
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in: "\xc2",
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out: "",
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outFull: "\ufffd",
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err: transform.ErrShortSrc,
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errSpan: transform.ErrShortSrc,
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t: rotate,
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}, {
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desc: "invalid input, incomplete rune atEOF",
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szDst: large,
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atEOF: true,
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in: "\xc2",
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out: "\ufffd",
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outFull: "\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "misc correct",
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szDst: large,
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atEOF: true,
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in: "a\U00012345 ç!",
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out: "ça 中!",
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outFull: "ça 中!",
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "misc correct and invalid",
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szDst: large,
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atEOF: true,
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in: "Hello\x80 w\x80orl\xc0d!\xc0",
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out: "Hello\ufffd w\ufffdorl\ufffdd!\ufffd",
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outFull: "Hello\ufffd w\ufffdorl\ufffdd!\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "misc correct and invalid, short src",
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szDst: large,
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atEOF: false,
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in: "Hello\x80 w\x80orl\xc0d!\xc2",
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out: "Hello\ufffd w\ufffdorl\ufffdd!",
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outFull: "Hello\ufffd w\ufffdorl\ufffdd!\ufffd",
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err: transform.ErrShortSrc,
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errSpan: transform.ErrEndOfSpan,
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t: rotate,
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}, {
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desc: "misc correct and invalid, short src, replacing RuneError",
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szDst: large,
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atEOF: false,
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in: "Hel\ufffdlo\x80 w\x80orl\xc0d!\xc2",
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out: "Hel?lo? w?orl?d!",
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outFull: "Hel?lo? w?orl?d!?",
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errSpan: transform.ErrEndOfSpan,
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err: transform.ErrShortSrc,
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t: Map(func(r rune) rune {
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if r == utf8.RuneError {
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return '?'
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}
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return r
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}),
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}} {
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tt.check(t, i)
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}
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}
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func TestRemove(t *testing.T) {
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remove := Remove(Predicate(func(r rune) bool {
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return strings.ContainsRune("aeiou\u0300\uFF24\U00012345", r)
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}))
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for i, tt := range []transformTest{
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0: {
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szDst: large,
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atEOF: true,
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in: "",
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out: "",
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outFull: "",
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t: remove,
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},
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1: {
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szDst: 0,
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atEOF: true,
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in: "aaaa",
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out: "",
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outFull: "",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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2: {
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szDst: 1,
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atEOF: true,
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in: "aaaa",
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out: "",
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outFull: "",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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3: {
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szDst: 1,
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atEOF: true,
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in: "baaaa",
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out: "b",
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outFull: "b",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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4: {
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szDst: 2,
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atEOF: true,
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in: "açaaa",
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out: "ç",
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outFull: "ç",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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5: {
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szDst: 2,
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atEOF: true,
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in: "aaaç",
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out: "ç",
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outFull: "ç",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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6: {
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szDst: 2,
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atEOF: false,
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in: "a\x80",
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out: "",
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outFull: "\ufffd",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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7: {
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szDst: 1,
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atEOF: true,
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in: "a\xc0",
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out: "",
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outFull: "\ufffd",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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8: {
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szDst: 1,
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atEOF: false,
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in: "a\xc2",
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out: "",
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outFull: "\ufffd",
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err: transform.ErrShortSrc,
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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9: {
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szDst: large,
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atEOF: true,
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in: "\x80",
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out: "\ufffd",
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outFull: "\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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10: {
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szDst: large,
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atEOF: false,
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in: "\x80",
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out: "\ufffd",
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outFull: "\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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11: {
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szDst: large,
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atEOF: true,
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in: "\xc2",
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out: "\ufffd",
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outFull: "\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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12: {
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szDst: large,
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atEOF: false,
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in: "\xc2",
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out: "",
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outFull: "\ufffd",
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err: transform.ErrShortSrc,
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errSpan: transform.ErrShortSrc,
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t: remove,
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},
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13: {
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szDst: large,
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atEOF: true,
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in: "Hello \U00012345world!",
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out: "Hll wrld!",
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outFull: "Hll wrld!",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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14: {
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szDst: large,
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atEOF: true,
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in: "Hello\x80 w\x80orl\xc0d!\xc0",
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out: "Hll\ufffd w\ufffdrl\ufffdd!\ufffd",
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outFull: "Hll\ufffd w\ufffdrl\ufffdd!\ufffd",
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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15: {
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szDst: large,
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atEOF: false,
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in: "Hello\x80 w\x80orl\xc0d!\xc2",
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out: "Hll\ufffd w\ufffdrl\ufffdd!",
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outFull: "Hll\ufffd w\ufffdrl\ufffdd!\ufffd",
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err: transform.ErrShortSrc,
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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16: {
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szDst: large,
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atEOF: false,
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in: "Hel\ufffdlo\x80 w\x80orl\xc0d!\xc2",
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out: "Hello world!",
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outFull: "Hello world!",
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err: transform.ErrShortSrc,
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errSpan: transform.ErrEndOfSpan,
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t: Remove(Predicate(func(r rune) bool { return r == utf8.RuneError })),
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},
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17: {
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szDst: 4,
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atEOF: true,
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in: "Hellø",
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out: "Hll",
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outFull: "Hllø",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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18: {
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szDst: 4,
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atEOF: false,
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in: "Hellø",
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out: "Hll",
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outFull: "Hllø",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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19: {
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szDst: 8,
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atEOF: false,
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in: "\x80Hello\uFF24\x80",
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out: "\ufffdHll",
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outFull: "\ufffdHll\ufffd",
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err: transform.ErrShortDst,
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errSpan: transform.ErrEndOfSpan,
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t: remove,
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},
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20: {
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szDst: 8,
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atEOF: false,
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in: "Hllll",
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out: "Hllll",
|
||
|
outFull: "Hllll",
|
||
|
t: remove,
|
||
|
}} {
|
||
|
tt.check(t, i)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestReplaceIllFormed(t *testing.T) {
|
||
|
replace := ReplaceIllFormed()
|
||
|
|
||
|
for i, tt := range []transformTest{
|
||
|
0: {
|
||
|
szDst: large,
|
||
|
atEOF: true,
|
||
|
in: "",
|
||
|
out: "",
|
||
|
outFull: "",
|
||
|
t: replace,
|
||
|
},
|
||
|
1: {
|
||
|
szDst: 1,
|
||
|
atEOF: true,
|
||
|
in: "aa",
|
||
|
out: "a",
|
||
|
outFull: "aa",
|
||
|
err: transform.ErrShortDst,
|
||
|
t: replace,
|
||
|
},
|
||
|
2: {
|
||
|
szDst: 1,
|
||
|
atEOF: true,
|
||
|
in: "a\x80",
|
||
|
out: "a",
|
||
|
outFull: "a\ufffd",
|
||
|
err: transform.ErrShortDst,
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
3: {
|
||
|
szDst: 1,
|
||
|
atEOF: true,
|
||
|
in: "a\xc2",
|
||
|
out: "a",
|
||
|
outFull: "a\ufffd",
|
||
|
err: transform.ErrShortDst,
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
4: {
|
||
|
szDst: large,
|
||
|
atEOF: true,
|
||
|
in: "\x80",
|
||
|
out: "\ufffd",
|
||
|
outFull: "\ufffd",
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
5: {
|
||
|
szDst: large,
|
||
|
atEOF: false,
|
||
|
in: "\x80",
|
||
|
out: "\ufffd",
|
||
|
outFull: "\ufffd",
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
6: {
|
||
|
szDst: large,
|
||
|
atEOF: true,
|
||
|
in: "\xc2",
|
||
|
out: "\ufffd",
|
||
|
outFull: "\ufffd",
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
7: {
|
||
|
szDst: large,
|
||
|
atEOF: false,
|
||
|
in: "\xc2",
|
||
|
out: "",
|
||
|
outFull: "\ufffd",
|
||
|
err: transform.ErrShortSrc,
|
||
|
errSpan: transform.ErrShortSrc,
|
||
|
t: replace,
|
||
|
},
|
||
|
8: {
|
||
|
szDst: large,
|
||
|
atEOF: true,
|
||
|
in: "Hello world!",
|
||
|
out: "Hello world!",
|
||
|
outFull: "Hello world!",
|
||
|
t: replace,
|
||
|
},
|
||
|
9: {
|
||
|
szDst: large,
|
||
|
atEOF: true,
|
||
|
in: "Hello\x80 w\x80orl\xc2d!\xc2",
|
||
|
out: "Hello\ufffd w\ufffdorl\ufffdd!\ufffd",
|
||
|
outFull: "Hello\ufffd w\ufffdorl\ufffdd!\ufffd",
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
10: {
|
||
|
szDst: large,
|
||
|
atEOF: false,
|
||
|
in: "Hello\x80 w\x80orl\xc2d!\xc2",
|
||
|
out: "Hello\ufffd w\ufffdorl\ufffdd!",
|
||
|
outFull: "Hello\ufffd w\ufffdorl\ufffdd!\ufffd",
|
||
|
err: transform.ErrShortSrc,
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
16: {
|
||
|
szDst: 10,
|
||
|
atEOF: false,
|
||
|
in: "\x80Hello\x80",
|
||
|
out: "\ufffdHello",
|
||
|
outFull: "\ufffdHello\ufffd",
|
||
|
err: transform.ErrShortDst,
|
||
|
errSpan: transform.ErrEndOfSpan,
|
||
|
t: replace,
|
||
|
},
|
||
|
17: {
|
||
|
szDst: 10,
|
||
|
atEOF: false,
|
||
|
in: "\ufffdHello\ufffd",
|
||
|
out: "\ufffdHello",
|
||
|
outFull: "\ufffdHello\ufffd",
|
||
|
err: transform.ErrShortDst,
|
||
|
t: replace,
|
||
|
},
|
||
|
} {
|
||
|
tt.check(t, i)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestMapAlloc(t *testing.T) {
|
||
|
if n := testtext.AllocsPerRun(3, func() {
|
||
|
Map(idem).Transform(nil, nil, false)
|
||
|
}); n > 0 {
|
||
|
t.Errorf("got %f; want 0", n)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func rmNop(r rune) bool { return false }
|
||
|
|
||
|
func TestRemoveAlloc(t *testing.T) {
|
||
|
if n := testtext.AllocsPerRun(3, func() {
|
||
|
Remove(Predicate(rmNop)).Transform(nil, nil, false)
|
||
|
}); n > 0 {
|
||
|
t.Errorf("got %f; want 0", n)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestReplaceIllFormedAlloc(t *testing.T) {
|
||
|
if n := testtext.AllocsPerRun(3, func() {
|
||
|
ReplaceIllFormed().Transform(nil, nil, false)
|
||
|
}); n > 0 {
|
||
|
t.Errorf("got %f; want 0", n)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func doBench(b *testing.B, t Transformer) {
|
||
|
for _, bc := range []struct{ name, data string }{
|
||
|
{"ascii", testtext.ASCII},
|
||
|
{"3byte", testtext.ThreeByteUTF8},
|
||
|
} {
|
||
|
dst := make([]byte, 2*len(bc.data))
|
||
|
src := []byte(bc.data)
|
||
|
|
||
|
testtext.Bench(b, bc.name+"/transform", func(b *testing.B) {
|
||
|
b.SetBytes(int64(len(src)))
|
||
|
for i := 0; i < b.N; i++ {
|
||
|
t.Transform(dst, src, true)
|
||
|
}
|
||
|
})
|
||
|
src = t.Bytes(src)
|
||
|
t.Reset()
|
||
|
testtext.Bench(b, bc.name+"/span", func(b *testing.B) {
|
||
|
b.SetBytes(int64(len(src)))
|
||
|
for i := 0; i < b.N; i++ {
|
||
|
t.Span(src, true)
|
||
|
}
|
||
|
})
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func BenchmarkRemove(b *testing.B) {
|
||
|
doBench(b, Remove(Predicate(func(r rune) bool { return r == 'e' })))
|
||
|
}
|
||
|
|
||
|
func BenchmarkMapAll(b *testing.B) {
|
||
|
doBench(b, Map(func(r rune) rune { return 'a' }))
|
||
|
}
|
||
|
|
||
|
func BenchmarkMapNone(b *testing.B) {
|
||
|
doBench(b, Map(func(r rune) rune { return r }))
|
||
|
}
|
||
|
|
||
|
func BenchmarkReplaceIllFormed(b *testing.B) {
|
||
|
doBench(b, ReplaceIllFormed())
|
||
|
}
|
||
|
|
||
|
var (
|
||
|
input = strings.Repeat("Thé qüick brøwn føx jumps øver the lazy døg. ", 100)
|
||
|
)
|