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patternmatcher_test.go
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patternmatcher_test.go
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package patternmatcher
import (
"fmt"
"os"
"path"
"path/filepath"
"runtime"
"strings"
"testing"
)
func TestWildcardMatches(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"*"})
if !match {
t.Errorf("failed to get a wildcard match, got %v", match)
}
}
// A simple pattern match should return true.
func TestPatternMatches(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"*.go"})
if !match {
t.Errorf("failed to get a match, got %v", match)
}
}
// An exclusion followed by an inclusion should return true.
func TestExclusionPatternMatchesPatternBefore(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"!fileutils.go", "*.go"})
if !match {
t.Errorf("failed to get true match on exclusion pattern, got %v", match)
}
}
// A folder pattern followed by an exception should return false.
func TestPatternMatchesFolderExclusions(t *testing.T) {
match, _ := Matches("docs/README.md", []string{"docs", "!docs/README.md"})
if match {
t.Errorf("failed to get a false match on exclusion pattern, got %v", match)
}
}
// A folder pattern followed by an exception should return false.
func TestPatternMatchesFolderWithSlashExclusions(t *testing.T) {
match, _ := Matches("docs/README.md", []string{"docs/", "!docs/README.md"})
if match {
t.Errorf("failed to get a false match on exclusion pattern, got %v", match)
}
}
// A folder pattern followed by an exception should return false.
func TestPatternMatchesFolderWildcardExclusions(t *testing.T) {
match, _ := Matches("docs/README.md", []string{"docs/*", "!docs/README.md"})
if match {
t.Errorf("failed to get a false match on exclusion pattern, got %v", match)
}
}
// A pattern followed by an exclusion should return false.
func TestExclusionPatternMatchesPatternAfter(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"*.go", "!fileutils.go"})
if match {
t.Errorf("failed to get false match on exclusion pattern, got %v", match)
}
}
// A filename evaluating to . should return false.
func TestExclusionPatternMatchesWholeDirectory(t *testing.T) {
match, _ := Matches(".", []string{"*.go"})
if match {
t.Errorf("failed to get false match on ., got %v", match)
}
}
// A single ! pattern should return an error.
func TestSingleExclamationError(t *testing.T) {
_, err := Matches("fileutils.go", []string{"!"})
if err == nil {
t.Errorf("failed to get an error for a single exclamation point, got %v", err)
}
}
// Matches with no patterns
func TestMatchesWithNoPatterns(t *testing.T) {
matches, err := Matches("/any/path/there", []string{})
if err != nil {
t.Fatal(err)
}
if matches {
t.Fatalf("Should not have match anything")
}
}
// Matches with malformed patterns
func TestMatchesWithMalformedPatterns(t *testing.T) {
matches, err := Matches("/any/path/there", []string{"["})
if err == nil {
t.Fatal("Should have failed because of a malformed syntax in the pattern")
}
if matches {
t.Fatalf("Should not have match anything")
}
}
type matchesTestCase struct {
pattern string
text string
pass bool
}
type multiPatternTestCase struct {
patterns []string
text string
pass bool
}
func TestMatches(t *testing.T) {
tests := []matchesTestCase{
{"**", "file", true},
{"**", "file/", true},
{"**/", "file", true}, // weird one
{"**/", "file/", true},
{"**", "/", true},
{"**/", "/", true},
{"**", "dir/file", true},
{"**/", "dir/file", true},
{"**", "dir/file/", true},
{"**/", "dir/file/", true},
{"**/**", "dir/file", true},
{"**/**", "dir/file/", true},
{"dir/**", "dir/file", true},
{"dir/**", "dir/file/", true},
{"dir/**", "dir/dir2/file", true},
{"dir/**", "dir/dir2/file/", true},
{"**/dir", "dir", true},
{"**/dir", "dir/file", true},
{"**/dir2/*", "dir/dir2/file", true},
{"**/dir2/*", "dir/dir2/file/", true},
{"**/dir2/**", "dir/dir2/dir3/file", true},
{"**/dir2/**", "dir/dir2/dir3/file/", true},
{"**file", "file", true},
{"**file", "dir/file", true},
{"**/file", "dir/file", true},
{"**file", "dir/dir/file", true},
{"**/file", "dir/dir/file", true},
{"**/file*", "dir/dir/file", true},
{"**/file*", "dir/dir/file.txt", true},
{"**/file*txt", "dir/dir/file.txt", true},
{"**/file*.txt", "dir/dir/file.txt", true},
{"**/file*.txt*", "dir/dir/file.txt", true},
{"**/**/*.txt", "dir/dir/file.txt", true},
{"**/**/*.txt2", "dir/dir/file.txt", false},
{"**/*.txt", "file.txt", true},
{"**/**/*.txt", "file.txt", true},
{"a**/*.txt", "a/file.txt", true},
{"a**/*.txt", "a/dir/file.txt", true},
{"a**/*.txt", "a/dir/dir/file.txt", true},
{"a/*.txt", "a/dir/file.txt", false},
{"a/*.txt", "a/file.txt", true},
{"a/*.txt**", "a/file.txt", true},
{"a[b-d]e", "ae", false},
{"a[b-d]e", "ace", true},
{"a[b-d]e", "aae", false},
{"a[^b-d]e", "aze", true},
{".*", ".foo", true},
{".*", "foo", false},
{"abc.def", "abcdef", false},
{"abc.def", "abc.def", true},
{"abc.def", "abcZdef", false},
{"abc?def", "abcZdef", true},
{"abc?def", "abcdef", false},
{"a\\\\", "a\\", true},
{"**/foo/bar", "foo/bar", true},
{"**/foo/bar", "dir/foo/bar", true},
{"**/foo/bar", "dir/dir2/foo/bar", true},
{"abc/**", "abc", false},
{"abc/**", "abc/def", true},
{"abc/**", "abc/def/ghi", true},
{"**/.foo", ".foo", true},
{"**/.foo", "bar.foo", false},
{"a(b)c/def", "a(b)c/def", true},
{"a(b)c/def", "a(b)c/xyz", false},
{"a.|)$(}+{bc", "a.|)$(}+{bc", true},
{"dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", true},
{"dist/*.whl", "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", true},
}
multiPatternTests := []multiPatternTestCase{
{[]string{"**", "!util/docker/web"}, "util/docker/web/foo", false},
{[]string{"**", "!util/docker/web", "util/docker/web/foo"}, "util/docker/web/foo", true},
{[]string{"**", "!dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl"}, "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", false},
{[]string{"**", "!dist/*.whl"}, "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", false},
}
if runtime.GOOS != "windows" {
tests = append(tests, []matchesTestCase{
{"a\\*b", "a*b", true},
}...)
}
t.Run("MatchesOrParentMatches", func(t *testing.T) {
for _, test := range tests {
pm, err := New([]string{test.pattern})
if err != nil {
t.Fatalf("%v (pattern=%q, text=%q)", err, test.pattern, test.text)
}
res, _ := pm.MatchesOrParentMatches(test.text)
if test.pass != res {
t.Fatalf("%v (pattern=%q, text=%q)", err, test.pattern, test.text)
}
}
for _, test := range multiPatternTests {
pm, err := New(test.patterns)
if err != nil {
t.Fatalf("%v (patterns=%q, text=%q)", err, test.patterns, test.text)
}
res, _ := pm.MatchesOrParentMatches(test.text)
if test.pass != res {
t.Errorf("expected: %v, got: %v (patterns=%q, text=%q)", test.pass, res, test.patterns, test.text)
}
}
})
t.Run("MatchesUsingParentResult", func(t *testing.T) {
for _, test := range tests {
pm, err := New([]string{test.pattern})
if err != nil {
t.Fatalf("%v (pattern=%q, text=%q)", err, test.pattern, test.text)
}
parentPath := filepath.Dir(filepath.FromSlash(test.text))
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
parentMatched := false
if parentPath != "." {
for i := range parentPathDirs {
parentMatched, _ = pm.MatchesUsingParentResult(strings.Join(parentPathDirs[:i+1], "/"), parentMatched)
}
}
res, _ := pm.MatchesUsingParentResult(test.text, parentMatched)
if test.pass != res {
t.Errorf("expected: %v, got: %v (pattern=%q, text=%q)", test.pass, res, test.pattern, test.text)
}
}
})
t.Run("MatchesUsingParentResults", func(t *testing.T) {
check := func(pm *PatternMatcher, text string, pass bool, desc string) {
parentPath := filepath.Dir(filepath.FromSlash(text))
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
parentMatchInfo := MatchInfo{}
if parentPath != "." {
for i := range parentPathDirs {
_, parentMatchInfo, _ = pm.MatchesUsingParentResults(strings.Join(parentPathDirs[:i+1], "/"), parentMatchInfo)
}
}
res, _, _ := pm.MatchesUsingParentResults(text, parentMatchInfo)
if pass != res {
t.Errorf("expected: %v, got: %v %s", pass, res, desc)
}
}
for _, test := range tests {
desc := fmt.Sprintf("(pattern=%q text=%q)", test.pattern, test.text)
pm, err := New([]string{test.pattern})
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
for _, test := range multiPatternTests {
desc := fmt.Sprintf("pattern=%q text=%q", test.patterns, test.text)
pm, err := New(test.patterns)
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
})
t.Run("MatchesUsingParentResultsNoContext", func(t *testing.T) {
check := func(pm *PatternMatcher, text string, pass bool, desc string) {
res, _, _ := pm.MatchesUsingParentResults(text, MatchInfo{})
if pass != res {
t.Errorf("expected: %v, got: %v %s", pass, res, desc)
}
}
for _, test := range tests {
desc := fmt.Sprintf("(pattern=%q text=%q)", test.pattern, test.text)
pm, err := New([]string{test.pattern})
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
for _, test := range multiPatternTests {
desc := fmt.Sprintf("(pattern=%q text=%q)", test.patterns, test.text)
pm, err := New(test.patterns)
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
})
}
func TestCleanPatterns(t *testing.T) {
patterns := []string{"docs", "config"}
pm, err := New(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
cleaned := pm.Patterns()
if len(cleaned) != 2 {
t.Errorf("expected 2 element slice, got %v", len(cleaned))
}
}
func TestCleanPatternsStripEmptyPatterns(t *testing.T) {
patterns := []string{"docs", "config", ""}
pm, err := New(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
cleaned := pm.Patterns()
if len(cleaned) != 2 {
t.Errorf("expected 2 element slice, got %v", len(cleaned))
}
}
func TestCleanPatternsExceptionFlag(t *testing.T) {
patterns := []string{"docs", "!docs/README.md"}
pm, err := New(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
if !pm.Exclusions() {
t.Errorf("expected exceptions to be true, got %v", pm.Exclusions())
}
}
func TestCleanPatternsLeadingSpaceTrimmed(t *testing.T) {
patterns := []string{"docs", " !docs/README.md"}
pm, err := New(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
if !pm.Exclusions() {
t.Errorf("expected exceptions to be true, got %v", pm.Exclusions())
}
}
func TestCleanPatternsTrailingSpaceTrimmed(t *testing.T) {
patterns := []string{"docs", "!docs/README.md "}
pm, err := New(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
if !pm.Exclusions() {
t.Errorf("expected exceptions to be true, got %v", pm.Exclusions())
}
}
func TestCleanPatternsErrorSingleException(t *testing.T) {
patterns := []string{"!"}
_, err := New(patterns)
if err == nil {
t.Errorf("expected error on single exclamation point, got %v", err)
}
}
// These matchTests are stolen from go's filepath Match tests.
type matchTest struct {
pattern, s string
match bool
err error
}
var matchTests = []matchTest{
{"abc", "abc", true, nil},
{"*", "abc", true, nil},
{"*c", "abc", true, nil},
{"a*", "a", true, nil},
{"a*", "abc", true, nil},
{"a*", "ab/c", true, nil},
{"a*/b", "abc/b", true, nil},
{"a*/b", "a/c/b", false, nil},
{"a*b*c*d*e*/f", "axbxcxdxe/f", true, nil},
{"a*b*c*d*e*/f", "axbxcxdxexxx/f", true, nil},
{"a*b*c*d*e*/f", "axbxcxdxe/xxx/f", false, nil},
{"a*b*c*d*e*/f", "axbxcxdxexxx/fff", false, nil},
{"a*b?c*x", "abxbbxdbxebxczzx", true, nil},
{"a*b?c*x", "abxbbxdbxebxczzy", false, nil},
{"ab[c]", "abc", true, nil},
{"ab[b-d]", "abc", true, nil},
{"ab[e-g]", "abc", false, nil},
{"ab[^c]", "abc", false, nil},
{"ab[^b-d]", "abc", false, nil},
{"ab[^e-g]", "abc", true, nil},
{"a\\*b", "a*b", true, nil},
{"a\\*b", "ab", false, nil},
{"a?b", "a☺b", true, nil},
{"a[^a]b", "a☺b", true, nil},
{"a???b", "a☺b", false, nil},
{"a[^a][^a][^a]b", "a☺b", false, nil},
{"[a-ζ]*", "α", true, nil},
{"*[a-ζ]", "A", false, nil},
{"a?b", "a/b", false, nil},
{"a*b", "a/b", false, nil},
{"[\\]a]", "]", true, nil},
{"[\\-]", "-", true, nil},
{"[x\\-]", "x", true, nil},
{"[x\\-]", "-", true, nil},
{"[x\\-]", "z", false, nil},
{"[\\-x]", "x", true, nil},
{"[\\-x]", "-", true, nil},
{"[\\-x]", "a", false, nil},
{"[]a]", "]", false, filepath.ErrBadPattern},
{"[-]", "-", false, filepath.ErrBadPattern},
{"[x-]", "x", false, filepath.ErrBadPattern},
{"[x-]", "-", false, filepath.ErrBadPattern},
{"[x-]", "z", false, filepath.ErrBadPattern},
{"[-x]", "x", false, filepath.ErrBadPattern},
{"[-x]", "-", false, filepath.ErrBadPattern},
{"[-x]", "a", false, filepath.ErrBadPattern},
{"\\", "a", false, filepath.ErrBadPattern},
{"[a-b-c]", "a", false, filepath.ErrBadPattern},
{"[", "a", false, filepath.ErrBadPattern},
{"[^", "a", false, filepath.ErrBadPattern},
{"[^bc", "a", false, filepath.ErrBadPattern},
{"a[", "a", false, filepath.ErrBadPattern}, // was nil but IMO its wrong
{"a[", "ab", false, filepath.ErrBadPattern},
{"*x", "xxx", true, nil},
}
func errp(e error) string {
if e == nil {
return "<nil>"
}
return e.Error()
}
// TestMatch tests our version of filepath.Match, called Matches.
func TestMatch(t *testing.T) {
for _, tt := range matchTests {
pattern := tt.pattern
s := tt.s
if runtime.GOOS == "windows" {
if strings.Contains(pattern, "\\") {
// no escape allowed on windows.
continue
}
pattern = filepath.Clean(pattern)
s = filepath.Clean(s)
}
ok, err := Matches(s, []string{pattern})
if ok != tt.match || err != tt.err {
t.Fatalf("Match(%#q, %#q) = %v, %q want %v, %q", pattern, s, ok, errp(err), tt.match, errp(tt.err))
}
}
}
type compileTestCase struct {
pattern string
matchType matchType
compiledRegexp string
windowsCompiledRegexp string
}
var compileTests = []compileTestCase{
{"*", regexpMatch, `^[^/]*$`, `^[^\\]*$`},
{"file*", regexpMatch, `^file[^/]*$`, `^file[^\\]*$`},
{"*file", regexpMatch, `^[^/]*file$`, `^[^\\]*file$`},
{"a*/b", regexpMatch, `^a[^/]*/b$`, `^a[^\\]*\\b$`},
{"**", suffixMatch, "", ""},
{"**/**", regexpMatch, `^(.*/)?.*$`, `^(.*\\)?.*$`},
{"dir/**", prefixMatch, "", ""},
{"**/dir", suffixMatch, "", ""},
{"**/dir2/*", regexpMatch, `^(.*/)?dir2/[^/]*$`, `^(.*\\)?dir2\\[^\\]*$`},
{"**/dir2/**", regexpMatch, `^(.*/)?dir2/.*$`, `^(.*\\)?dir2\\.*$`},
{"**file", suffixMatch, "", ""},
{"**/file*txt", regexpMatch, `^(.*/)?file[^/]*txt$`, `^(.*\\)?file[^\\]*txt$`},
{"**/**/*.txt", regexpMatch, `^(.*/)?(.*/)?[^/]*\.txt$`, `^(.*\\)?(.*\\)?[^\\]*\.txt$`},
{"a[b-d]e", regexpMatch, `^a[b-d]e$`, `^a[b-d]e$`},
{".*", regexpMatch, `^\.[^/]*$`, `^\.[^\\]*$`},
{"abc.def", exactMatch, "", ""},
{"abc?def", regexpMatch, `^abc[^/]def$`, `^abc[^\\]def$`},
{"**/foo/bar", suffixMatch, "", ""},
{"a(b)c/def", exactMatch, "", ""},
{"a.|)$(}+{bc", exactMatch, "", ""},
{"dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", exactMatch, "", ""},
}
// TestCompile confirms that "compile" assigns the correct match type to a
// variety of test case patterns. If the match type is regexp, it also confirms
// that the compiled regexp matches the expected regexp.
func TestCompile(t *testing.T) {
t.Run("slash", testCompile("/"))
t.Run("backslash", testCompile(`\`))
}
func testCompile(sl string) func(*testing.T) {
return func(t *testing.T) {
for _, tt := range compileTests {
// Avoid NewPatternMatcher, which has platform-specific behavior
pm := &PatternMatcher{
patterns: make([]*Pattern, 1),
}
pattern := path.Clean(tt.pattern)
if sl != "/" {
pattern = strings.ReplaceAll(pattern, "/", sl)
}
newp := &Pattern{}
newp.cleanedPattern = pattern
newp.dirs = strings.Split(pattern, sl)
pm.patterns[0] = newp
if err := pm.patterns[0].compile(sl); err != nil {
t.Fatalf("Failed to compile pattern %q: %v", pattern, err)
}
if pm.patterns[0].matchType != tt.matchType {
t.Errorf("pattern %q: matchType = %v, want %v", pattern, pm.patterns[0].matchType, tt.matchType)
continue
}
if tt.matchType == regexpMatch {
if sl == `\` {
if pm.patterns[0].regexp.String() != tt.windowsCompiledRegexp {
t.Errorf("pattern %q: regexp = %s, want %s", pattern, pm.patterns[0].regexp, tt.windowsCompiledRegexp)
}
} else if pm.patterns[0].regexp.String() != tt.compiledRegexp {
t.Errorf("pattern %q: regexp = %s, want %s", pattern, pm.patterns[0].regexp, tt.compiledRegexp)
}
}
}
}
}