diff options
Diffstat (limited to 'src/strconv/quote_test.go')
-rw-r--r-- | src/strconv/quote_test.go | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/src/strconv/quote_test.go b/src/strconv/quote_test.go new file mode 100644 index 0000000..f1faf13 --- /dev/null +++ b/src/strconv/quote_test.go @@ -0,0 +1,369 @@ +// Copyright 2009 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 strconv_test + +import ( + . "strconv" + "testing" + "unicode" +) + +// Verify that our IsPrint agrees with unicode.IsPrint. +func TestIsPrint(t *testing.T) { + n := 0 + for r := rune(0); r <= unicode.MaxRune; r++ { + if IsPrint(r) != unicode.IsPrint(r) { + t.Errorf("IsPrint(%U)=%t incorrect", r, IsPrint(r)) + n++ + if n > 10 { + return + } + } + } +} + +// Verify that our IsGraphic agrees with unicode.IsGraphic. +func TestIsGraphic(t *testing.T) { + n := 0 + for r := rune(0); r <= unicode.MaxRune; r++ { + if IsGraphic(r) != unicode.IsGraphic(r) { + t.Errorf("IsGraphic(%U)=%t incorrect", r, IsGraphic(r)) + n++ + if n > 10 { + return + } + } + } +} + +type quoteTest struct { + in string + out string + ascii string + graphic string +} + +var quotetests = []quoteTest{ + {"\a\b\f\r\n\t\v", `"\a\b\f\r\n\t\v"`, `"\a\b\f\r\n\t\v"`, `"\a\b\f\r\n\t\v"`}, + {"\\", `"\\"`, `"\\"`, `"\\"`}, + {"abc\xffdef", `"abc\xffdef"`, `"abc\xffdef"`, `"abc\xffdef"`}, + {"\u263a", `"☺"`, `"\u263a"`, `"☺"`}, + {"\U0010ffff", `"\U0010ffff"`, `"\U0010ffff"`, `"\U0010ffff"`}, + {"\x04", `"\x04"`, `"\x04"`, `"\x04"`}, + // Some non-printable but graphic runes. Final column is double-quoted. + {"!\u00a0!\u2000!\u3000!", `"!\u00a0!\u2000!\u3000!"`, `"!\u00a0!\u2000!\u3000!"`, "\"!\u00a0!\u2000!\u3000!\""}, +} + +func TestQuote(t *testing.T) { + for _, tt := range quotetests { + if out := Quote(tt.in); out != tt.out { + t.Errorf("Quote(%s) = %s, want %s", tt.in, out, tt.out) + } + if out := AppendQuote([]byte("abc"), tt.in); string(out) != "abc"+tt.out { + t.Errorf("AppendQuote(%q, %s) = %s, want %s", "abc", tt.in, out, "abc"+tt.out) + } + } +} + +func TestQuoteToASCII(t *testing.T) { + for _, tt := range quotetests { + if out := QuoteToASCII(tt.in); out != tt.ascii { + t.Errorf("QuoteToASCII(%s) = %s, want %s", tt.in, out, tt.ascii) + } + if out := AppendQuoteToASCII([]byte("abc"), tt.in); string(out) != "abc"+tt.ascii { + t.Errorf("AppendQuoteToASCII(%q, %s) = %s, want %s", "abc", tt.in, out, "abc"+tt.ascii) + } + } +} + +func TestQuoteToGraphic(t *testing.T) { + for _, tt := range quotetests { + if out := QuoteToGraphic(tt.in); out != tt.graphic { + t.Errorf("QuoteToGraphic(%s) = %s, want %s", tt.in, out, tt.graphic) + } + if out := AppendQuoteToGraphic([]byte("abc"), tt.in); string(out) != "abc"+tt.graphic { + t.Errorf("AppendQuoteToGraphic(%q, %s) = %s, want %s", "abc", tt.in, out, "abc"+tt.graphic) + } + } +} + +func BenchmarkQuote(b *testing.B) { + for i := 0; i < b.N; i++ { + Quote("\a\b\f\r\n\t\v\a\b\f\r\n\t\v\a\b\f\r\n\t\v") + } +} + +func BenchmarkQuoteRune(b *testing.B) { + for i := 0; i < b.N; i++ { + QuoteRune('\a') + } +} + +var benchQuoteBuf []byte + +func BenchmarkAppendQuote(b *testing.B) { + for i := 0; i < b.N; i++ { + benchQuoteBuf = AppendQuote(benchQuoteBuf[:0], "\a\b\f\r\n\t\v\a\b\f\r\n\t\v\a\b\f\r\n\t\v") + } +} + +var benchQuoteRuneBuf []byte + +func BenchmarkAppendQuoteRune(b *testing.B) { + for i := 0; i < b.N; i++ { + benchQuoteRuneBuf = AppendQuoteRune(benchQuoteRuneBuf[:0], '\a') + } +} + +type quoteRuneTest struct { + in rune + out string + ascii string + graphic string +} + +var quoterunetests = []quoteRuneTest{ + {'a', `'a'`, `'a'`, `'a'`}, + {'\a', `'\a'`, `'\a'`, `'\a'`}, + {'\\', `'\\'`, `'\\'`, `'\\'`}, + {0xFF, `'ÿ'`, `'\u00ff'`, `'ÿ'`}, + {0x263a, `'☺'`, `'\u263a'`, `'☺'`}, + {0xfffd, `'�'`, `'\ufffd'`, `'�'`}, + {0x0010ffff, `'\U0010ffff'`, `'\U0010ffff'`, `'\U0010ffff'`}, + {0x0010ffff + 1, `'�'`, `'\ufffd'`, `'�'`}, + {0x04, `'\x04'`, `'\x04'`, `'\x04'`}, + // Some differences between graphic and printable. Note the last column is double-quoted. + {'\u00a0', `'\u00a0'`, `'\u00a0'`, "'\u00a0'"}, + {'\u2000', `'\u2000'`, `'\u2000'`, "'\u2000'"}, + {'\u3000', `'\u3000'`, `'\u3000'`, "'\u3000'"}, +} + +func TestQuoteRune(t *testing.T) { + for _, tt := range quoterunetests { + if out := QuoteRune(tt.in); out != tt.out { + t.Errorf("QuoteRune(%U) = %s, want %s", tt.in, out, tt.out) + } + if out := AppendQuoteRune([]byte("abc"), tt.in); string(out) != "abc"+tt.out { + t.Errorf("AppendQuoteRune(%q, %U) = %s, want %s", "abc", tt.in, out, "abc"+tt.out) + } + } +} + +func TestQuoteRuneToASCII(t *testing.T) { + for _, tt := range quoterunetests { + if out := QuoteRuneToASCII(tt.in); out != tt.ascii { + t.Errorf("QuoteRuneToASCII(%U) = %s, want %s", tt.in, out, tt.ascii) + } + if out := AppendQuoteRuneToASCII([]byte("abc"), tt.in); string(out) != "abc"+tt.ascii { + t.Errorf("AppendQuoteRuneToASCII(%q, %U) = %s, want %s", "abc", tt.in, out, "abc"+tt.ascii) + } + } +} + +func TestQuoteRuneToGraphic(t *testing.T) { + for _, tt := range quoterunetests { + if out := QuoteRuneToGraphic(tt.in); out != tt.graphic { + t.Errorf("QuoteRuneToGraphic(%U) = %s, want %s", tt.in, out, tt.graphic) + } + if out := AppendQuoteRuneToGraphic([]byte("abc"), tt.in); string(out) != "abc"+tt.graphic { + t.Errorf("AppendQuoteRuneToGraphic(%q, %U) = %s, want %s", "abc", tt.in, out, "abc"+tt.graphic) + } + } +} + +type canBackquoteTest struct { + in string + out bool +} + +var canbackquotetests = []canBackquoteTest{ + {"`", false}, + {string(rune(0)), false}, + {string(rune(1)), false}, + {string(rune(2)), false}, + {string(rune(3)), false}, + {string(rune(4)), false}, + {string(rune(5)), false}, + {string(rune(6)), false}, + {string(rune(7)), false}, + {string(rune(8)), false}, + {string(rune(9)), true}, // \t + {string(rune(10)), false}, + {string(rune(11)), false}, + {string(rune(12)), false}, + {string(rune(13)), false}, + {string(rune(14)), false}, + {string(rune(15)), false}, + {string(rune(16)), false}, + {string(rune(17)), false}, + {string(rune(18)), false}, + {string(rune(19)), false}, + {string(rune(20)), false}, + {string(rune(21)), false}, + {string(rune(22)), false}, + {string(rune(23)), false}, + {string(rune(24)), false}, + {string(rune(25)), false}, + {string(rune(26)), false}, + {string(rune(27)), false}, + {string(rune(28)), false}, + {string(rune(29)), false}, + {string(rune(30)), false}, + {string(rune(31)), false}, + {string(rune(0x7F)), false}, + {`' !"#$%&'()*+,-./:;<=>?@[\]^_{|}~`, true}, + {`0123456789`, true}, + {`ABCDEFGHIJKLMNOPQRSTUVWXYZ`, true}, + {`abcdefghijklmnopqrstuvwxyz`, true}, + {`☺`, true}, + {"\x80", false}, + {"a\xe0\xa0z", false}, + {"\ufeffabc", false}, + {"a\ufeffz", false}, +} + +func TestCanBackquote(t *testing.T) { + for _, tt := range canbackquotetests { + if out := CanBackquote(tt.in); out != tt.out { + t.Errorf("CanBackquote(%q) = %v, want %v", tt.in, out, tt.out) + } + } +} + +type unQuoteTest struct { + in string + out string +} + +var unquotetests = []unQuoteTest{ + {`""`, ""}, + {`"a"`, "a"}, + {`"abc"`, "abc"}, + {`"☺"`, "☺"}, + {`"hello world"`, "hello world"}, + {`"\xFF"`, "\xFF"}, + {`"\377"`, "\377"}, + {`"\u1234"`, "\u1234"}, + {`"\U00010111"`, "\U00010111"}, + {`"\U0001011111"`, "\U0001011111"}, + {`"\a\b\f\n\r\t\v\\\""`, "\a\b\f\n\r\t\v\\\""}, + {`"'"`, "'"}, + + {`'a'`, "a"}, + {`'☹'`, "☹"}, + {`'\a'`, "\a"}, + {`'\x10'`, "\x10"}, + {`'\377'`, "\377"}, + {`'\u1234'`, "\u1234"}, + {`'\U00010111'`, "\U00010111"}, + {`'\t'`, "\t"}, + {`' '`, " "}, + {`'\''`, "'"}, + {`'"'`, "\""}, + + {"``", ``}, + {"`a`", `a`}, + {"`abc`", `abc`}, + {"`☺`", `☺`}, + {"`hello world`", `hello world`}, + {"`\\xFF`", `\xFF`}, + {"`\\377`", `\377`}, + {"`\\`", `\`}, + {"`\n`", "\n"}, + {"` `", ` `}, + {"` `", ` `}, + {"`a\rb`", "ab"}, +} + +var misquoted = []string{ + ``, + `"`, + `"a`, + `"'`, + `b"`, + `"\"`, + `"\9"`, + `"\19"`, + `"\129"`, + `'\'`, + `'\9'`, + `'\19'`, + `'\129'`, + `'ab'`, + `"\x1!"`, + `"\U12345678"`, + `"\z"`, + "`", + "`xxx", + "`\"", + `"\'"`, + `'\"'`, + "\"\n\"", + "\"\\n\n\"", + "'\n'", +} + +func TestUnquote(t *testing.T) { + for _, tt := range unquotetests { + if out, err := Unquote(tt.in); err != nil || out != tt.out { + t.Errorf("Unquote(%#q) = %q, %v want %q, nil", tt.in, out, err, tt.out) + } + } + + // run the quote tests too, backward + for _, tt := range quotetests { + if in, err := Unquote(tt.out); in != tt.in { + t.Errorf("Unquote(%#q) = %q, %v, want %q, nil", tt.out, in, err, tt.in) + } + } + + for _, s := range misquoted { + if out, err := Unquote(s); out != "" || err != ErrSyntax { + t.Errorf("Unquote(%#q) = %q, %v want %q, %v", s, out, err, "", ErrSyntax) + } + } +} + +// Issue 23685: invalid UTF-8 should not go through the fast path. +func TestUnquoteInvalidUTF8(t *testing.T) { + tests := []struct { + in string + + // one of: + want string + wantErr string + }{ + {in: `"foo"`, want: "foo"}, + {in: `"foo`, wantErr: "invalid syntax"}, + {in: `"` + "\xc0" + `"`, want: "\xef\xbf\xbd"}, + {in: `"a` + "\xc0" + `"`, want: "a\xef\xbf\xbd"}, + {in: `"\t` + "\xc0" + `"`, want: "\t\xef\xbf\xbd"}, + } + for i, tt := range tests { + got, err := Unquote(tt.in) + var gotErr string + if err != nil { + gotErr = err.Error() + } + if gotErr != tt.wantErr { + t.Errorf("%d. Unquote(%q) = err %v; want %q", i, tt.in, err, tt.wantErr) + } + if tt.wantErr == "" && err == nil && got != tt.want { + t.Errorf("%d. Unquote(%q) = %02x; want %02x", i, tt.in, []byte(got), []byte(tt.want)) + } + } +} + +func BenchmarkUnquoteEasy(b *testing.B) { + for i := 0; i < b.N; i++ { + Unquote(`"Give me a rock, paper and scissors and I will move the world."`) + } +} + +func BenchmarkUnquoteHard(b *testing.B) { + for i := 0; i < b.N; i++ { + Unquote(`"\x47ive me a \x72ock, \x70aper and \x73cissors and \x49 will move the world."`) + } +} |