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-rw-r--r--src/encoding/csv/reader_test.go650
1 files changed, 650 insertions, 0 deletions
diff --git a/src/encoding/csv/reader_test.go b/src/encoding/csv/reader_test.go
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+++ b/src/encoding/csv/reader_test.go
@@ -0,0 +1,650 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package csv
+
+import (
+ "errors"
+ "fmt"
+ "io"
+ "reflect"
+ "strings"
+ "testing"
+ "unicode/utf8"
+)
+
+type readTest struct {
+ Name string
+ Input string
+ Output [][]string
+ Positions [][][2]int
+ Errors []error
+
+ // These fields are copied into the Reader
+ Comma rune
+ Comment rune
+ UseFieldsPerRecord bool // false (default) means FieldsPerRecord is -1
+ FieldsPerRecord int
+ LazyQuotes bool
+ TrimLeadingSpace bool
+ ReuseRecord bool
+}
+
+// In these tests, the §, ¶ and ∑ characters in readTest.Input are used to denote
+// the start of a field, a record boundary and the position of an error respectively.
+// They are removed before parsing and are used to verify the position
+// information reported by FieldPos.
+
+var readTests = []readTest{{
+ Name: "Simple",
+ Input: "§a,§b,§c\n",
+ Output: [][]string{{"a", "b", "c"}},
+}, {
+ Name: "CRLF",
+ Input: "§a,§b\r\n¶§c,§d\r\n",
+ Output: [][]string{{"a", "b"}, {"c", "d"}},
+}, {
+ Name: "BareCR",
+ Input: "§a,§b\rc,§d\r\n",
+ Output: [][]string{{"a", "b\rc", "d"}},
+}, {
+ Name: "RFC4180test",
+ Input: `§#field1,§field2,§field3
+¶§"aaa",§"bb
+b",§"ccc"
+¶§"a,a",§"b""bb",§"ccc"
+¶§zzz,§yyy,§xxx
+`,
+ Output: [][]string{
+ {"#field1", "field2", "field3"},
+ {"aaa", "bb\nb", "ccc"},
+ {"a,a", `b"bb`, "ccc"},
+ {"zzz", "yyy", "xxx"},
+ },
+ UseFieldsPerRecord: true,
+ FieldsPerRecord: 0,
+}, {
+ Name: "NoEOLTest",
+ Input: "§a,§b,§c",
+ Output: [][]string{{"a", "b", "c"}},
+}, {
+ Name: "Semicolon",
+ Input: "§a;§b;§c\n",
+ Output: [][]string{{"a", "b", "c"}},
+ Comma: ';',
+}, {
+ Name: "MultiLine",
+ Input: `§"two
+line",§"one line",§"three
+line
+field"`,
+ Output: [][]string{{"two\nline", "one line", "three\nline\nfield"}},
+}, {
+ Name: "BlankLine",
+ Input: "§a,§b,§c\n\n¶§d,§e,§f\n\n",
+ Output: [][]string{
+ {"a", "b", "c"},
+ {"d", "e", "f"},
+ },
+}, {
+ Name: "BlankLineFieldCount",
+ Input: "§a,§b,§c\n\n¶§d,§e,§f\n\n",
+ Output: [][]string{
+ {"a", "b", "c"},
+ {"d", "e", "f"},
+ },
+ UseFieldsPerRecord: true,
+ FieldsPerRecord: 0,
+}, {
+ Name: "TrimSpace",
+ Input: " §a, §b, §c\n",
+ Output: [][]string{{"a", "b", "c"}},
+ TrimLeadingSpace: true,
+}, {
+ Name: "LeadingSpace",
+ Input: "§ a,§ b,§ c\n",
+ Output: [][]string{{" a", " b", " c"}},
+}, {
+ Name: "Comment",
+ Input: "#1,2,3\n§a,§b,§c\n#comment",
+ Output: [][]string{{"a", "b", "c"}},
+ Comment: '#',
+}, {
+ Name: "NoComment",
+ Input: "§#1,§2,§3\n¶§a,§b,§c",
+ Output: [][]string{{"#1", "2", "3"}, {"a", "b", "c"}},
+}, {
+ Name: "LazyQuotes",
+ Input: `§a "word",§"1"2",§a",§"b`,
+ Output: [][]string{{`a "word"`, `1"2`, `a"`, `b`}},
+ LazyQuotes: true,
+}, {
+ Name: "BareQuotes",
+ Input: `§a "word",§"1"2",§a"`,
+ Output: [][]string{{`a "word"`, `1"2`, `a"`}},
+ LazyQuotes: true,
+}, {
+ Name: "BareDoubleQuotes",
+ Input: `§a""b,§c`,
+ Output: [][]string{{`a""b`, `c`}},
+ LazyQuotes: true,
+}, {
+ Name: "BadDoubleQuotes",
+ Input: `§a∑""b,c`,
+ Errors: []error{&ParseError{Err: ErrBareQuote}},
+}, {
+ Name: "TrimQuote",
+ Input: ` §"a",§" b",§c`,
+ Output: [][]string{{"a", " b", "c"}},
+ TrimLeadingSpace: true,
+}, {
+ Name: "BadBareQuote",
+ Input: `§a ∑"word","b"`,
+ Errors: []error{&ParseError{Err: ErrBareQuote}},
+}, {
+ Name: "BadTrailingQuote",
+ Input: `§"a word",b∑"`,
+ Errors: []error{&ParseError{Err: ErrBareQuote}},
+}, {
+ Name: "ExtraneousQuote",
+ Input: `§"a ∑"word","b"`,
+ Errors: []error{&ParseError{Err: ErrQuote}},
+}, {
+ Name: "BadFieldCount",
+ Input: "§a,§b,§c\n¶∑§d,§e",
+ Errors: []error{nil, &ParseError{Err: ErrFieldCount}},
+ Output: [][]string{{"a", "b", "c"}, {"d", "e"}},
+ UseFieldsPerRecord: true,
+ FieldsPerRecord: 0,
+}, {
+ Name: "BadFieldCountMultiple",
+ Input: "§a,§b,§c\n¶∑§d,§e\n¶∑§f",
+ Errors: []error{nil, &ParseError{Err: ErrFieldCount}, &ParseError{Err: ErrFieldCount}},
+ Output: [][]string{{"a", "b", "c"}, {"d", "e"}, {"f"}},
+ UseFieldsPerRecord: true,
+ FieldsPerRecord: 0,
+}, {
+ Name: "BadFieldCount1",
+ Input: `§∑a,§b,§c`,
+ Errors: []error{&ParseError{Err: ErrFieldCount}},
+ Output: [][]string{{"a", "b", "c"}},
+ UseFieldsPerRecord: true,
+ FieldsPerRecord: 2,
+}, {
+ Name: "FieldCount",
+ Input: "§a,§b,§c\n¶§d,§e",
+ Output: [][]string{{"a", "b", "c"}, {"d", "e"}},
+}, {
+ Name: "TrailingCommaEOF",
+ Input: "§a,§b,§c,§",
+ Output: [][]string{{"a", "b", "c", ""}},
+}, {
+ Name: "TrailingCommaEOL",
+ Input: "§a,§b,§c,§\n",
+ Output: [][]string{{"a", "b", "c", ""}},
+}, {
+ Name: "TrailingCommaSpaceEOF",
+ Input: "§a,§b,§c, §",
+ Output: [][]string{{"a", "b", "c", ""}},
+ TrimLeadingSpace: true,
+}, {
+ Name: "TrailingCommaSpaceEOL",
+ Input: "§a,§b,§c, §\n",
+ Output: [][]string{{"a", "b", "c", ""}},
+ TrimLeadingSpace: true,
+}, {
+ Name: "TrailingCommaLine3",
+ Input: "§a,§b,§c\n¶§d,§e,§f\n¶§g,§hi,§",
+ Output: [][]string{{"a", "b", "c"}, {"d", "e", "f"}, {"g", "hi", ""}},
+ TrimLeadingSpace: true,
+}, {
+ Name: "NotTrailingComma3",
+ Input: "§a,§b,§c,§ \n",
+ Output: [][]string{{"a", "b", "c", " "}},
+}, {
+ Name: "CommaFieldTest",
+ Input: `§x,§y,§z,§w
+¶§x,§y,§z,§
+¶§x,§y,§,§
+¶§x,§,§,§
+¶§,§,§,§
+¶§"x",§"y",§"z",§"w"
+¶§"x",§"y",§"z",§""
+¶§"x",§"y",§"",§""
+¶§"x",§"",§"",§""
+¶§"",§"",§"",§""
+`,
+ Output: [][]string{
+ {"x", "y", "z", "w"},
+ {"x", "y", "z", ""},
+ {"x", "y", "", ""},
+ {"x", "", "", ""},
+ {"", "", "", ""},
+ {"x", "y", "z", "w"},
+ {"x", "y", "z", ""},
+ {"x", "y", "", ""},
+ {"x", "", "", ""},
+ {"", "", "", ""},
+ },
+}, {
+ Name: "TrailingCommaIneffective1",
+ Input: "§a,§b,§\n¶§c,§d,§e",
+ Output: [][]string{
+ {"a", "b", ""},
+ {"c", "d", "e"},
+ },
+ TrimLeadingSpace: true,
+}, {
+ Name: "ReadAllReuseRecord",
+ Input: "§a,§b\n¶§c,§d",
+ Output: [][]string{
+ {"a", "b"},
+ {"c", "d"},
+ },
+ ReuseRecord: true,
+}, {
+ Name: "StartLine1", // Issue 19019
+ Input: "§a,\"b\nc∑\"d,e",
+ Errors: []error{&ParseError{Err: ErrQuote}},
+}, {
+ Name: "StartLine2",
+ Input: "§a,§b\n¶§\"d\n\n,e∑",
+ Errors: []error{nil, &ParseError{Err: ErrQuote}},
+ Output: [][]string{{"a", "b"}},
+}, {
+ Name: "CRLFInQuotedField", // Issue 21201
+ Input: "§A,§\"Hello\r\nHi\",§B\r\n",
+ Output: [][]string{
+ {"A", "Hello\nHi", "B"},
+ },
+}, {
+ Name: "BinaryBlobField", // Issue 19410
+ Input: "§x09\x41\xb4\x1c,§aktau",
+ Output: [][]string{{"x09A\xb4\x1c", "aktau"}},
+}, {
+ Name: "TrailingCR",
+ Input: "§field1,§field2\r",
+ Output: [][]string{{"field1", "field2"}},
+}, {
+ Name: "QuotedTrailingCR",
+ Input: "§\"field\"\r",
+ Output: [][]string{{"field"}},
+}, {
+ Name: "QuotedTrailingCRCR",
+ Input: "§\"field∑\"\r\r",
+ Errors: []error{&ParseError{Err: ErrQuote}},
+}, {
+ Name: "FieldCR",
+ Input: "§field\rfield\r",
+ Output: [][]string{{"field\rfield"}},
+}, {
+ Name: "FieldCRCR",
+ Input: "§field\r\rfield\r\r",
+ Output: [][]string{{"field\r\rfield\r"}},
+}, {
+ Name: "FieldCRCRLF",
+ Input: "§field\r\r\n¶§field\r\r\n",
+ Output: [][]string{{"field\r"}, {"field\r"}},
+}, {
+ Name: "FieldCRCRLFCR",
+ Input: "§field\r\r\n¶§\rfield\r\r\n\r",
+ Output: [][]string{{"field\r"}, {"\rfield\r"}},
+}, {
+ Name: "FieldCRCRLFCRCR",
+ Input: "§field\r\r\n¶§\r\rfield\r\r\n¶§\r\r",
+ Output: [][]string{{"field\r"}, {"\r\rfield\r"}, {"\r"}},
+}, {
+ Name: "MultiFieldCRCRLFCRCR",
+ Input: "§field1,§field2\r\r\n¶§\r\rfield1,§field2\r\r\n¶§\r\r,§",
+ Output: [][]string{
+ {"field1", "field2\r"},
+ {"\r\rfield1", "field2\r"},
+ {"\r\r", ""},
+ },
+}, {
+ Name: "NonASCIICommaAndComment",
+ Input: "§a£§b,c£ \t§d,e\n€ comment\n",
+ Output: [][]string{{"a", "b,c", "d,e"}},
+ TrimLeadingSpace: true,
+ Comma: '£',
+ Comment: '€',
+}, {
+ Name: "NonASCIICommaAndCommentWithQuotes",
+ Input: "§a€§\" b,\"€§ c\nλ comment\n",
+ Output: [][]string{{"a", " b,", " c"}},
+ Comma: '€',
+ Comment: 'λ',
+}, {
+ // λ and θ start with the same byte.
+ // This tests that the parser doesn't confuse such characters.
+ Name: "NonASCIICommaConfusion",
+ Input: "§\"abθcd\"λ§efθgh",
+ Output: [][]string{{"abθcd", "efθgh"}},
+ Comma: 'λ',
+ Comment: '€',
+}, {
+ Name: "NonASCIICommentConfusion",
+ Input: "§λ\n¶§λ\nθ\n¶§λ\n",
+ Output: [][]string{{"λ"}, {"λ"}, {"λ"}},
+ Comment: 'θ',
+}, {
+ Name: "QuotedFieldMultipleLF",
+ Input: "§\"\n\n\n\n\"",
+ Output: [][]string{{"\n\n\n\n"}},
+}, {
+ Name: "MultipleCRLF",
+ Input: "\r\n\r\n\r\n\r\n",
+}, {
+ // The implementation may read each line in several chunks if it doesn't fit entirely
+ // in the read buffer, so we should test the code to handle that condition.
+ Name: "HugeLines",
+ Input: strings.Repeat("#ignore\n", 10000) + "§" + strings.Repeat("@", 5000) + ",§" + strings.Repeat("*", 5000),
+ Output: [][]string{{strings.Repeat("@", 5000), strings.Repeat("*", 5000)}},
+ Comment: '#',
+}, {
+ Name: "QuoteWithTrailingCRLF",
+ Input: "§\"foo∑\"bar\"\r\n",
+ Errors: []error{&ParseError{Err: ErrQuote}},
+}, {
+ Name: "LazyQuoteWithTrailingCRLF",
+ Input: "§\"foo\"bar\"\r\n",
+ Output: [][]string{{`foo"bar`}},
+ LazyQuotes: true,
+}, {
+ Name: "DoubleQuoteWithTrailingCRLF",
+ Input: "§\"foo\"\"bar\"\r\n",
+ Output: [][]string{{`foo"bar`}},
+}, {
+ Name: "EvenQuotes",
+ Input: `§""""""""`,
+ Output: [][]string{{`"""`}},
+}, {
+ Name: "OddQuotes",
+ Input: `§"""""""∑`,
+ Errors: []error{&ParseError{Err: ErrQuote}},
+}, {
+ Name: "LazyOddQuotes",
+ Input: `§"""""""`,
+ Output: [][]string{{`"""`}},
+ LazyQuotes: true,
+}, {
+ Name: "BadComma1",
+ Comma: '\n',
+ Errors: []error{errInvalidDelim},
+}, {
+ Name: "BadComma2",
+ Comma: '\r',
+ Errors: []error{errInvalidDelim},
+}, {
+ Name: "BadComma3",
+ Comma: '"',
+ Errors: []error{errInvalidDelim},
+}, {
+ Name: "BadComma4",
+ Comma: utf8.RuneError,
+ Errors: []error{errInvalidDelim},
+}, {
+ Name: "BadComment1",
+ Comment: '\n',
+ Errors: []error{errInvalidDelim},
+}, {
+ Name: "BadComment2",
+ Comment: '\r',
+ Errors: []error{errInvalidDelim},
+}, {
+ Name: "BadComment3",
+ Comment: utf8.RuneError,
+ Errors: []error{errInvalidDelim},
+}, {
+ Name: "BadCommaComment",
+ Comma: 'X',
+ Comment: 'X',
+ Errors: []error{errInvalidDelim},
+}}
+
+func TestRead(t *testing.T) {
+ newReader := func(tt readTest) (*Reader, [][][2]int, map[int][2]int) {
+ positions, errPositions, input := makePositions(tt.Input)
+ r := NewReader(strings.NewReader(input))
+
+ if tt.Comma != 0 {
+ r.Comma = tt.Comma
+ }
+ r.Comment = tt.Comment
+ if tt.UseFieldsPerRecord {
+ r.FieldsPerRecord = tt.FieldsPerRecord
+ } else {
+ r.FieldsPerRecord = -1
+ }
+ r.LazyQuotes = tt.LazyQuotes
+ r.TrimLeadingSpace = tt.TrimLeadingSpace
+ r.ReuseRecord = tt.ReuseRecord
+ return r, positions, errPositions
+ }
+
+ for _, tt := range readTests {
+ t.Run(tt.Name, func(t *testing.T) {
+ r, positions, errPositions := newReader(tt)
+ out, err := r.ReadAll()
+ if wantErr := firstError(tt.Errors, positions, errPositions); wantErr != nil {
+ if !reflect.DeepEqual(err, wantErr) {
+ t.Fatalf("ReadAll() error mismatch:\ngot %v (%#v)\nwant %v (%#v)", err, err, wantErr, wantErr)
+ }
+ if out != nil {
+ t.Fatalf("ReadAll() output:\ngot %q\nwant nil", out)
+ }
+ } else {
+ if err != nil {
+ t.Fatalf("unexpected Readall() error: %v", err)
+ }
+ if !reflect.DeepEqual(out, tt.Output) {
+ t.Fatalf("ReadAll() output:\ngot %q\nwant %q", out, tt.Output)
+ }
+ }
+
+ // Check field and error positions.
+ r, _, _ = newReader(tt)
+ for recNum := 0; ; recNum++ {
+ rec, err := r.Read()
+ var wantErr error
+ if recNum < len(tt.Errors) && tt.Errors[recNum] != nil {
+ wantErr = errorWithPosition(tt.Errors[recNum], recNum, positions, errPositions)
+ } else if recNum >= len(tt.Output) {
+ wantErr = io.EOF
+ }
+ if !reflect.DeepEqual(err, wantErr) {
+ t.Fatalf("Read() error at record %d:\ngot %v (%#v)\nwant %v (%#v)", recNum, err, err, wantErr, wantErr)
+ }
+ // ErrFieldCount is explicitly non-fatal.
+ if err != nil && !errors.Is(err, ErrFieldCount) {
+ if recNum < len(tt.Output) {
+ t.Fatalf("need more records; got %d want %d", recNum, len(tt.Output))
+ }
+ break
+ }
+ if got, want := rec, tt.Output[recNum]; !reflect.DeepEqual(got, want) {
+ t.Errorf("Read vs ReadAll mismatch;\ngot %q\nwant %q", got, want)
+ }
+ pos := positions[recNum]
+ if len(pos) != len(rec) {
+ t.Fatalf("mismatched position length at record %d", recNum)
+ }
+ for i := range rec {
+ line, col := r.FieldPos(i)
+ if got, want := [2]int{line, col}, pos[i]; got != want {
+ t.Errorf("position mismatch at record %d, field %d;\ngot %v\nwant %v", recNum, i, got, want)
+ }
+ }
+ }
+ })
+ }
+}
+
+// firstError returns the first non-nil error in errs,
+// with the position adjusted according to the error's
+// index inside positions.
+func firstError(errs []error, positions [][][2]int, errPositions map[int][2]int) error {
+ for i, err := range errs {
+ if err != nil {
+ return errorWithPosition(err, i, positions, errPositions)
+ }
+ }
+ return nil
+}
+
+func errorWithPosition(err error, recNum int, positions [][][2]int, errPositions map[int][2]int) error {
+ parseErr, ok := err.(*ParseError)
+ if !ok {
+ return err
+ }
+ if recNum >= len(positions) {
+ panic(fmt.Errorf("no positions found for error at record %d", recNum))
+ }
+ errPos, ok := errPositions[recNum]
+ if !ok {
+ panic(fmt.Errorf("no error position found for error at record %d", recNum))
+ }
+ parseErr1 := *parseErr
+ parseErr1.StartLine = positions[recNum][0][0]
+ parseErr1.Line = errPos[0]
+ parseErr1.Column = errPos[1]
+ return &parseErr1
+}
+
+// makePositions returns the expected field positions of all
+// the fields in text, the positions of any errors, and the text with the position markers
+// removed.
+//
+// The start of each field is marked with a § symbol;
+// CSV lines are separated by ¶ symbols;
+// Error positions are marked with ∑ symbols.
+func makePositions(text string) ([][][2]int, map[int][2]int, string) {
+ buf := make([]byte, 0, len(text))
+ var positions [][][2]int
+ errPositions := make(map[int][2]int)
+ line, col := 1, 1
+ recNum := 0
+
+ for len(text) > 0 {
+ r, size := utf8.DecodeRuneInString(text)
+ switch r {
+ case '\n':
+ line++
+ col = 1
+ buf = append(buf, '\n')
+ case '§':
+ if len(positions) == 0 {
+ positions = append(positions, [][2]int{})
+ }
+ positions[len(positions)-1] = append(positions[len(positions)-1], [2]int{line, col})
+ case '¶':
+ positions = append(positions, [][2]int{})
+ recNum++
+ case '∑':
+ errPositions[recNum] = [2]int{line, col}
+ default:
+ buf = append(buf, text[:size]...)
+ col += size
+ }
+ text = text[size:]
+ }
+ return positions, errPositions, string(buf)
+}
+
+// nTimes is an io.Reader which yields the string s n times.
+type nTimes struct {
+ s string
+ n int
+ off int
+}
+
+func (r *nTimes) Read(p []byte) (n int, err error) {
+ for {
+ if r.n <= 0 || r.s == "" {
+ return n, io.EOF
+ }
+ n0 := copy(p, r.s[r.off:])
+ p = p[n0:]
+ n += n0
+ r.off += n0
+ if r.off == len(r.s) {
+ r.off = 0
+ r.n--
+ }
+ if len(p) == 0 {
+ return
+ }
+ }
+}
+
+// benchmarkRead measures reading the provided CSV rows data.
+// initReader, if non-nil, modifies the Reader before it's used.
+func benchmarkRead(b *testing.B, initReader func(*Reader), rows string) {
+ b.ReportAllocs()
+ r := NewReader(&nTimes{s: rows, n: b.N})
+ if initReader != nil {
+ initReader(r)
+ }
+ for {
+ _, err := r.Read()
+ if err == io.EOF {
+ break
+ }
+ if err != nil {
+ b.Fatal(err)
+ }
+ }
+}
+
+const benchmarkCSVData = `x,y,z,w
+x,y,z,
+x,y,,
+x,,,
+,,,
+"x","y","z","w"
+"x","y","z",""
+"x","y","",""
+"x","","",""
+"","","",""
+`
+
+func BenchmarkRead(b *testing.B) {
+ benchmarkRead(b, nil, benchmarkCSVData)
+}
+
+func BenchmarkReadWithFieldsPerRecord(b *testing.B) {
+ benchmarkRead(b, func(r *Reader) { r.FieldsPerRecord = 4 }, benchmarkCSVData)
+}
+
+func BenchmarkReadWithoutFieldsPerRecord(b *testing.B) {
+ benchmarkRead(b, func(r *Reader) { r.FieldsPerRecord = -1 }, benchmarkCSVData)
+}
+
+func BenchmarkReadLargeFields(b *testing.B) {
+ benchmarkRead(b, nil, strings.Repeat(`xxxxxxxxxxxxxxxx,yyyyyyyyyyyyyyyy,zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+xxxxxxxxxxxxxxxxxxxxxxxx,yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy,zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvv
+,,zzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx,yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy,zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+`, 3))
+}
+
+func BenchmarkReadReuseRecord(b *testing.B) {
+ benchmarkRead(b, func(r *Reader) { r.ReuseRecord = true }, benchmarkCSVData)
+}
+
+func BenchmarkReadReuseRecordWithFieldsPerRecord(b *testing.B) {
+ benchmarkRead(b, func(r *Reader) { r.ReuseRecord = true; r.FieldsPerRecord = 4 }, benchmarkCSVData)
+}
+
+func BenchmarkReadReuseRecordWithoutFieldsPerRecord(b *testing.B) {
+ benchmarkRead(b, func(r *Reader) { r.ReuseRecord = true; r.FieldsPerRecord = -1 }, benchmarkCSVData)
+}
+
+func BenchmarkReadReuseRecordLargeFields(b *testing.B) {
+ benchmarkRead(b, func(r *Reader) { r.ReuseRecord = true }, strings.Repeat(`xxxxxxxxxxxxxxxx,yyyyyyyyyyyyyyyy,zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+xxxxxxxxxxxxxxxxxxxxxxxx,yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy,zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvv
+,,zzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx,yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy,zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww,vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+`, 3))
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 14:52:18 +0000