sh/pattern/pattern_test.go at master · Goldziher/sh · GitHub

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// See LICENSE for licensing information

package pattern

import (

"fmt"

"regexp"

"regexp/syntax"

"testing"

"github.com/go-quicktest/qt"

)

var regexpTests = []struct {

pat string

mode Mode

want string

wantErr string

mustMatch []string

mustNotMatch []string

}{

{pat: ``, want: ``},

{pat: `foo`, want: `foo`},

{

pat: `foo`, mode: NoGlobCase, want: `(?si)foo`,

mustMatch: []string{"foo", "FOO", "Foo"},

mustNotMatch: []string{"bar"},

{pat: `foóà中`, mode: Filenames, want: `foóà中`},

{pat: `.`, want: `(?s)\.`},

{pat: `foo*`, want: `(?s)foo.*`},

{pat: `foo*`, mode: Shortest, want: `(?sU)foo.*`},

{pat: `foo*`, mode: Shortest | Filenames, want: `(?sU)foo[^/]*`},

{

pat: `*foo*`, mode: EntireString, want: `(?s)^.*foo.*$`,

mustMatch: []string{"foo", "prefix-foo", "foo-suffix", "foo.suffix", ".foo.", "a\nbfooc\nd"},

mustNotMatch: []string{"bar"},

{

pat: `foo*`, mode: Filenames | EntireString, want: `(?s)^foo[^/]*$`,

mustMatch: []string{"foo", "foo-suffix", "foo.suffix", "foo\nsuffix"},

mustNotMatch: []string{"prefix-foo", "foo/suffix"},

{

pat: `foo/*`, mode: Filenames | EntireString, want: `(?s)^foo/([^/.][^/]*)?$`,

mustMatch: []string{"foo/", "foo/suffix"},

mustNotMatch: []string{"foo/.suffix", "foo/bar/baz"},

{

pat: `foo/*`, mode: Filenames | EntireString | GlobLeadingDot, want: `(?s)^foo/[^/]*$`,

mustMatch: []string{"foo/", "foo/suffix", "foo/.suffix"},

mustNotMatch: []string{"foo/bar/baz"},

{pat: `*foo`, mode: Filenames, want: `(?s)([^/.][^/]*)?foo`},

{

pat: `*foo`, mode: Filenames | EntireString, want: `(?s)^([^/.][^/]*)?foo$`,

mustMatch: []string{"foo", "prefix-foo", "prefix.foo"},

mustNotMatch: []string{"foo-suffix", "/prefix/foo", ".foo", ".prefix-foo"},

{pat: `**`, want: `(?s).*.*`},

{

pat: `**`, mode: Filenames | EntireString, want: `(?s)^(/|[^/.][^/]*)*$`,

mustMatch: []string{"/foo", "/prefix/foo", "/a.b.c/foo", "/a/b/c/foo", "/foo/suffix.ext", "/a\n/\nb"},

mustNotMatch: []string{"/.prefix/foo", "/prefix/.foo"},

{

pat: `**`, mode: Filenames | NoGlobStar | EntireString, want: `(?s)^([^/.][^/]*)?$`,

mustMatch: []string{"foo.bar"},

mustNotMatch: []string{"foo/bar", ".foo"},

{

pat: `**`, mode: Filenames | EntireString | GlobLeadingDot, want: `(?s)^.*$`,

mustMatch: []string{"/foo", "/prefix/foo", "/a.b.c/foo", "/a/b/c/foo", "/foo/suffix.ext", "/a\n/\nb", "/.prefix/foo", "/prefix/.foo"},

{pat: `/**/foo`, want: `(?s)/.*.*/foo`},

{

pat: `/**/foo`, mode: Filenames | EntireString, want: `(?s)^/((/|[^/.][^/]*)*/)?foo$`,

mustMatch: []string{"/foo", "/prefix/foo", "/a.b.c/foo", "/a/b/c/foo"},

mustNotMatch: []string{"/foo/suffix", "prefix/foo", "/.prefix/foo", "/prefix/.foo"},

{

pat: `/**/foo`, mode: Filenames | EntireString | GlobLeadingDot, want: `(?s)^/(.*/)?foo$`,

mustMatch: []string{"/foo", "/prefix/foo", "/a.b.c/foo", "/a/b/c/foo", "/.prefix/foo"},

mustNotMatch: []string{"/foo/suffix", "prefix/foo", "/prefix/.foo"},

{pat: `/**/foo`, mode: Filenames | NoGlobStar, want: `(?s)/([^/.][^/]*)?/foo`},

{pat: `/**/à`, mode: Filenames, want: `(?s)/((/|[^/.][^/]*)*/)?à`},

{

pat: `/**foo`, mode: Filenames, want: `(?s)/([^/.][^/]*)?foo`,

// These all match because without EntireString, we match substrings.

mustMatch: []string{"/foo", "/prefix-foo", "/foo-suffix", "/sub/foo"},

{

pat: `/**foo`, mode: Filenames | EntireString, want: `(?s)^/([^/.][^/]*)?foo$`,

mustMatch: []string{"/foo", "/prefix-foo"},

mustNotMatch: []string{"/foo-suffix", "/sub/foo", "/.foo", "/.prefix-foo"},

{

pat: `/foo**`, mode: Filenames | EntireString, want: `(?s)^/foo[^/]*$`,

mustMatch: []string{"/foo", "/foo-suffix", "/foo.suffix"},

mustNotMatch: []string{"/prefix-foo", "/foo/sub"},

{pat: `\*`, want: `(?s)\*`},

{pat: `\`, wantErr: `^\\ at end of pattern$`},

{pat: `?`, want: `(?s).`},

{

pat: `?`, mode: EntireString, want: `(?s)^.$`,

mustMatch: []string{"a", "\n", " "},

mustNotMatch: []string{"abc", ""},

{pat: `?`, mode: Filenames, want: `(?s)[^/]`},

{pat: `?à`, want: `(?s).à`},

{pat: `ŀ*`, want: `(?s)ŀ.*`},

{pat: `\a`, want: `(?s)a`},

{pat: `(`, want: `(?s)\(`},

{pat: `a|b`, want: `(?s)a\|b`},

{pat: `x{3}`, want: `(?s)x\{3\}`},

{pat: `{3,4}`, want: `(?s)\{3,4\}`},

{pat: `[a]`, want: `(?s)[a]`},

{pat: `[abc]`, want: `(?s)[abc]`},

{pat: `[^bc]`, want: `(?s)[^bc]`},

{pat: `[!bc]`, want: `(?s)[^bc]`},

{pat: `[[]`, want: `(?s)[[]`},

{pat: `[\]]`, want: `(?s)[\]]`},

{pat: `[\]]`, mode: Filenames, want: `(?s)[\]]`},

{pat: `[]]`, want: `(?s)[]]`},

{pat: `[!]]`, want: `(?s)[^]]`},

{pat: `[^]]`, want: `(?s)[^]]`},

{pat: `[a/b]`, want: `(?s)[a/b]`},

{

pat: `[a/b]`, mode: EntireString | Filenames, want: `(?s)^\[a/b\]$`,

mustMatch: []string{"[a/b]"},

mustNotMatch: []string{"a", "/", "b"},

{

pat: `[]/a]`, mode: EntireString | Filenames, want: `(?s)^\[\]/a\]$`,

mustMatch: []string{"[]/a]"},

mustNotMatch: []string{"]", "/", "a", "/a]", "/a"},

{

pat: `[[:alpha:]/]`, mode: EntireString | Filenames, want: `(?s)^\[\[:alpha:\]/\]$`,

mustMatch: []string{"[[:alpha:]/]"},

mustNotMatch: []string{"/", "a", "Z"},

{

pat: `[[:wrong:]/]`, mode: EntireString | Filenames, want: `(?s)^\[\[:wrong:\]/\]$`,

mustMatch: []string{"[[:wrong:]/]"},

mustNotMatch: []string{"/", "a", "Z"},

{pat: `[[.x.]]`, mode: Filenames, wantErr: `^charClass invalid$`},

{

pat: `[[./.]]`, mode: EntireString | Filenames, want: `(?s)^\[\[\./\.\]\]$`,

mustMatch: []string{"[[./.]]"},

mustNotMatch: []string{"/", "x"},

{

pat: `[a/*`, mode: EntireString | Filenames, want: `(?s)^\[a/([^/.][^/]*)?$`,

mustMatch: []string{"[a/", "[a/file"},

mustNotMatch: []string{"[a/.file", "a/file"},

{pat: `[a/\`, mode: Filenames, wantErr: `^\\ at end of pattern$`},

{

pat: `[\]/]`, mode: EntireString | Filenames, want: `(?s)^\[\\\]/\]$`,

mustMatch: []string{`[\]/]`},

mustNotMatch: []string{"]/]", "/"},

{

pat: `[!]/a]`, mode: EntireString | Filenames, want: `(?s)^\[!\]/a\]$`,

mustMatch: []string{"[!]/a]"},

mustNotMatch: []string{"]/a]", "/"},

{

pat: `[\[:digit:]/]`, mode: EntireString | Filenames, want: `(?s)^[\[:digit:]/\]$`,

mustMatch: []string{"[/]", ":/]", "d/]"},

mustNotMatch: []string{`[\[:digit:]/]`, "/"},

// An unmatched "[" is a literal, like in Bash.

{

pat: `[`, mode: EntireString, want: `(?s)^\[$`,

mustMatch: []string{"["},

mustNotMatch: []string{"", "[]"},

// TODO: bash treats the trailing backslash as a literal instead.

{pat: `[\`, wantErr: `^\\ at end of pattern$`},

{pat: `[^`, want: `(?s)\[\^`},

{pat: `[!`, want: `(?s)\[!`},

{pat: `[!bc]`, want: `(?s)[^bc]`},

{pat: `[]`, want: `(?s)\[\]`},

{pat: `[^]`, want: `(?s)\[\^\]`},

{pat: `[!]`, want: `(?s)\[!\]`},

{

pat: `[ab`, mode: EntireString, want: `(?s)^\[ab$`,

mustMatch: []string{"[ab"},

mustNotMatch: []string{"ab", "a"},

{

pat: `[a*`, mode: EntireString, want: `(?s)^\[a.*$`,

mustMatch: []string{"[a", "[abc"},

mustNotMatch: []string{"a", "[b"},

{pat: `[z-a`, want: `(?s)\[z-a`},

{pat: `[[ab`, want: `(?s)\[\[ab`},

{pat: `[a[b`, want: `(?s)\[a\[b`},

{

pat: `[[abc]`, mode: EntireString, want: `(?s)^[[abc]$`,

mustMatch: []string{"[", "a"},

mustNotMatch: []string{"[a", "d"},

{

pat: `[[:alpha:]`, mode: EntireString, want: `(?s)^\[[:alpha:]$`,

mustMatch: []string{"[a", "[:"},

mustNotMatch: []string{"[1", "["},

// Invalid character classes are errors even in an unmatched bracket.

{pat: `[[:wrong:]`, wantErr: `^charClass invalid$`},

{pat: `[[.x.]`, wantErr: `^charClass invalid$`},

{pat: `[z-a[:wrong:]`, wantErr: `^charClass invalid$`},

{pat: `[a-]`, want: `(?s)[a-]`},

{

pat: `[\0]`, want: `(?s)[0]`,

mustMatch: []string{"0"},

mustNotMatch: []string{"\x00", "a"},

{

pat: `[\d]`, want: `(?s)[d]`,

mustMatch: []string{"d"},

mustNotMatch: []string{"5"},

{pat: `[\5]`, want: `(?s)[5]`},

{

pat: `[\é]`, want: `(?s)[é]`,

mustMatch: []string{"é"},

{

pat: `[\-]`, want: `(?s)[\-]`,

mustMatch: []string{"-"},

mustNotMatch: []string{"a"},

{pat: `[z-a]`, wantErr: `^invalid range: z-a$`},

{pat: `[a-a]`, want: `(?s)[a-a]`},

{pat: `[aa]`, want: `(?s)[aa]`},

{pat: `[0-4A-Z]`, want: `(?s)[0-4A-Z]`},

{pat: `[-a]`, want: `(?s)[-a]`},

{pat: `[^-a]`, want: `(?s)[^-a]`},

{pat: `[a-]`, want: `(?s)[a-]`},

{pat: `[[:digit:]]`, want: `(?s)[[:digit:]]`},

{

pat: `*[![:space:]]*`, mode: EntireString, want: `(?s)^.*[^[:space:]].*$`,

mustMatch: []string{"x", " x ", "\t\n!"},

mustNotMatch: []string{"", " ", " \t\n "},

{pat: `[!a[:space:]0-9]`, want: `(?s)[^a[:space:]0-9]`},

{pat: `[a[:digit]]`, wantErr: `^charClass invalid$`},

{pat: `[[:`, wantErr: `^charClass invalid$`},

// Like Bash, an unclosed extended operator group is literal text,

// and the operator is parsed as a regular character.

{

pat: `@(a`, mode: ExtendedOperators | EntireString, want: `(?s)^@\(a$`,

mustMatch: []string{"@(a"},

mustNotMatch: []string{"a"},

{

pat: `@(a|b`, mode: ExtendedOperators | EntireString, want: `(?s)^@\(a\|b$`,

mustMatch: []string{"@(a|b"},

mustNotMatch: []string{"a", "b"},

{

pat: `*(a`, mode: ExtendedOperators | EntireString, want: `(?s)^.*\(a$`,

mustMatch: []string{"(a", "foo(a"},

mustNotMatch: []string{"a"},

{pat: `+(`, mode: ExtendedOperators, want: `(?s)\+\(`},

{pat: `!(a`, mode: ExtendedOperators | EntireString, want: `(?s)^!\(a$`},

{

pat: `@(a|@(b)`, mode: ExtendedOperators | EntireString, want: `(?s)^@\(a\|(b)$`,

mustMatch: []string{"@(a|b"},

mustNotMatch: []string{"a", "b"},

{pat: `[[:digit`, wantErr: `^charClass invalid$`},

{pat: `[[:wrong:]]`, wantErr: `^charClass invalid$`},

{pat: `[[=x=]]`, wantErr: `^charClass invalid$`},

{pat: `[[.x.]]`, wantErr: `^charClass invalid$`},

}

func TestRegexp(t *testing.T) {

t.Parallel()

for i, tc := range regexpTests {

t.Run(fmt.Sprintf("%02d", i), func(t *testing.T) {

t.Logf("input: pattern=%q mode=%#b\n", tc.pat, tc.mode)

got, gotErr := Regexp(tc.pat, tc.mode)

if tc.wantErr != "" {

qt.Assert(t, qt.ErrorMatches(gotErr, tc.wantErr))

} else {

qt.Assert(t, qt.IsNil(gotErr))

}

if got != tc.want {

t.Errorf("(%q, %#b) got %q, wanted %q", tc.pat, tc.mode, got, tc.want)

}

_, rxErr := syntax.Parse(got, syntax.Perl)

if gotErr == nil && rxErr != nil {

t.Fatalf("regexp/syntax.Parse(%q) failed with %q", got, rxErr)

}

rx := regexp.MustCompile(got)

for _, s := range tc.mustMatch {

qt.Check(t, qt.IsTrue(rx.MatchString(s)), qt.Commentf("must match: %q", s))

}

for _, s := range tc.mustNotMatch {

qt.Check(t, qt.IsFalse(rx.MatchString(s)), qt.Commentf("must not match: %q", s))

}

})

}

var metaTests = []struct {

pat string

wantHas bool

wantQuote string

}{

{``, false, ``},

{`foo`, false, `foo`},

{`.`, false, `.`},

{`*`, true, `\*`},

{`foo?`, true, `foo\?`},

{`\[`, false, `\\\[`},

{`{`, false, `{`},

{`[ab]`, true, `\[ab]`},

{`[ab`, false, `\[ab`},

{`ab]`, false, `ab]`},

{`[a\]`, false, `\[a\\]`},

{`[[:wrong:]]`, true, `\[\[:wrong:]]`},

{`[[:`, false, `\[\[:`},

}

func TestMeta(t *testing.T) {

t.Parallel()

for _, tc := range metaTests {

if got := HasMeta(tc.pat, 0); got != tc.wantHas {

t.Errorf("HasMeta(%q, 0) got %t, wanted %t",

tc.pat, got, tc.wantHas)

}

if got := QuoteMeta(tc.pat, 0); got != tc.wantQuote {

t.Errorf("QuoteMeta(%q, 0) got %q, wanted %q",

tc.pat, got, tc.wantQuote)

}

sh/pattern/pattern_test.go at master · Goldziher/sh · GitHub

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