move implementation to internal/ directory (#828)

internal/zfs/namecheck_test.go

@@ -0,0 +1,68 @@
+package zfs
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestEntityNamecheck(t *testing.T) {
+
+	type testcase struct {
+		input      string
+		entityType EntityType
+		ok         bool
+	}
+
+	tcs := []testcase{
+		{"/", EntityTypeFilesystem, false},
+		{"/foo", EntityTypeFilesystem, false},
+		{"/foo@bar", EntityTypeSnapshot, false},
+		{"foo", EntityTypeBookmark, false},
+		{"foo", EntityTypeSnapshot, false},
+		{"foo@bar", EntityTypeBookmark, false},
+		{"foo#bar", EntityTypeSnapshot, false},
+		{"foo#book", EntityTypeBookmark, true},
+		{"foo#book@bar", EntityTypeBookmark, false},
+		{"foo/book@bar", EntityTypeSnapshot, true},
+		{"foo/book#bar", EntityTypeBookmark, true},
+		{"foo/for%idden", EntityTypeFilesystem, false},
+		{"foo/bår", EntityTypeFilesystem, false},
+		{"", EntityTypeFilesystem, false},
+		{"foo/bar@", EntityTypeSnapshot, false},
+		{"foo/bar#", EntityTypeBookmark, false},
+		{"foo/bar#@blah", EntityTypeBookmark, false},
+		{"foo bar/baz bar@blah foo", EntityTypeSnapshot, true},
+		{"foo bar/baz bar@#lah foo", EntityTypeSnapshot, false},
+		{"foo bar/baz bar@@lah foo", EntityTypeSnapshot, false},
+		{"foo bar/baz bar##lah foo", EntityTypeBookmark, false},
+		{"foo bar/baz@blah/foo", EntityTypeSnapshot, false},
+		{"foo bar/baz@blah/foo", EntityTypeFilesystem, false},
+		{"foo/b\tr@ba\tz", EntityTypeSnapshot, false},
+		{"foo/b\tr@baz", EntityTypeSnapshot, false},
+		{"foo/bar@ba\tz", EntityTypeSnapshot, false},
+		{"foo/./bar", EntityTypeFilesystem, false},
+		{"foo/../bar", EntityTypeFilesystem, false},
+		{"foo/bar@..", EntityTypeFilesystem, false},
+		{"foo/bar@.", EntityTypeFilesystem, false},
+		{strings.Repeat("a", MaxDatasetNameLen), EntityTypeFilesystem, true},
+		{strings.Repeat("a", MaxDatasetNameLen) + "a", EntityTypeFilesystem, false},
+		{strings.Repeat("a", MaxDatasetNameLen-2) + "/a", EntityTypeFilesystem, true},
+		{strings.Repeat("a", MaxDatasetNameLen-4) + "/a@b", EntityTypeSnapshot, true},
+		{strings.Repeat("a", MaxDatasetNameLen) + "/a@b", EntityTypeSnapshot, false},
+		// + is not allowed, and particularly relevant to test here because
+		// common timestamp formats usually use `+` as a delimiter for numeric timezone offset
+		// => cf with package `timestamp_formatting`
+		{"foo/bar@23+42", EntityTypeSnapshot, false},
+	}
+
+	for idx := range tcs {
+		t.Run(tcs[idx].input, func(t *testing.T) {
+			tc := tcs[idx]
+			err := EntityNamecheck(tc.input, tc.entityType)
+			if !((err == nil && tc.ok) || (err != nil && !tc.ok)) {
+				t.Errorf("expecting ok=%v but got err=%v", tc.ok, err)
+			}
+		})
+	}
+
+}