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// Copyright ©2020 The Gonum 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 rdf
import (
"archive/tar"
"compress/gzip"
"fmt"
"io"
"os"
"path/filepath"
"reflect"
"strings"
"testing"
)
func TestRDFWorkingGroupSuite(t *testing.T) {
for _, file := range []string{
// "ntriple_tests.tar.gz",
// "nquad_tests.tar.gz",
} {
suite, err := os.Open(filepath.Join("testdata", file))
if err != nil {
t.Fatalf("Failed to open test suite in %q: %v", file, err)
}
defer suite.Close()
r, err := gzip.NewReader(suite)
if err != nil {
t.Fatalf("Failed to uncompress test suite in %q: %v", file, err)
}
tr := tar.NewReader(r)
for {
h, err := tr.Next()
if err != nil {
if err == io.EOF {
break
}
t.Fatalf("Unexpected error while reading suite archive: %v", err)
}
h.Name = filepath.Base(h.Name)
if filepath.Ext(h.Name) != ".nt" && filepath.Ext(h.Name) != ".nq" {
continue
}
if _, ok := testSuite[h.Name]; !ok {
t.Errorf("Missing test suite item %q", h.Name)
continue
}
isBad := strings.Contains(h.Name, "bad")
var got []statement
dec := NewDecoder(tr)
for i := 0; ; i++ {
s, err := dec.Unmarshal()
if err == io.EOF {
break
}
gotBad := err != nil
if gotBad != isBad {
t.Errorf("Unexpected error return for test suite item %q, got: %v", h.Name, err)
}
var subj, pred, obj, lab term
if s != nil {
subj.text, subj.qual, subj.kind, _ = s.Subject.Parts()
pred.text, pred.qual, pred.kind, _ = s.Predicate.Parts()
obj.text, obj.qual, obj.kind, _ = s.Object.Parts()
lab.text, lab.qual, lab.kind, _ = s.Label.Parts()
if lab.text == "" {
lab = term{}
}
got = append(got, statement{testSuite[h.Name][i].input, subj, pred, obj, lab})
}
if !gotBad {
_, err = ParseNQuad(s.String())
if err != nil {
t.Errorf("Unexpected error return for valid statement in test suite item %q (%#v) got: %v rendered as\n%[2]s", h.Name, s, err)
}
st, err := termFor(subj.text, subj.qual, subj.kind)
if err != nil {
t.Errorf("Unexpected error return for valid subject in test suite item %q (%#v) got: %v rendered as\n%[2]s", h.Name, s, err)
}
pt, err := termFor(pred.text, pred.qual, pred.kind)
if err != nil {
t.Errorf("Unexpected error return for valid predicate in test suite item %q (%#v) got: %v rendered as\n%[2]s", h.Name, s, err)
}
ot, err := termFor(obj.text, obj.qual, obj.kind)
if err != nil {
t.Errorf("Unexpected error return for valid object in test suite item %q (%#v) got: %v rendered as\n%[2]s", h.Name, s, err)
}
lt, err := termFor(lab.text, lab.qual, lab.kind)
if err != nil {
t.Errorf("Unexpected error return for valid label in test suite item %q (%#v) got: %v rendered as\n%[2]s", h.Name, s, err)
}
// We can't check that we recreate the original from the test suite
// due to escaping, but we can check for a second pass through the
// round-trip.
c := &Statement{Subject: st, Predicate: pt, Object: ot, Label: lt}
pc, err := ParseNQuad(c.String())
if err != nil {
t.Errorf("Unexpected error return for reconstructed statement in test suite item %q (%#v) got: %v rendered as\n%[2]s", h.Name, s, err)
}
if !reflect.DeepEqual(c, pc) {
t.Errorf("Unexpected reconstruction:\norig: %#v\ncons: %#v\nparsed:%#v", s, c, pc)
}
}
}
if !reflect.DeepEqual(testSuite[h.Name], got) {
t.Errorf("Unexpected result for test suite item %q", h.Name)
}
}
}
}
func termFor(text, qual string, kind Kind) (Term, error) {
switch kind {
case Invalid:
return Term{}, nil
case Blank:
return NewBlankTerm(text)
case IRI:
return NewIRITerm(text)
case Literal:
return NewLiteralTerm(text, qual)
default:
panic(fmt.Sprintf("bad test kind=%d", kind))
}
}
var escapeSequenceTests = []struct {
escaped string
unEscaped string
canRoundTrip bool
}{
{escaped: `plain text!`, unEscaped: "plain text!", canRoundTrip: true},
{escaped: `\t`, unEscaped: "\t", canRoundTrip: false},
{escaped: `\b`, unEscaped: "\b", canRoundTrip: false},
{escaped: `\n`, unEscaped: "\n", canRoundTrip: true},
{escaped: `\r`, unEscaped: "\r", canRoundTrip: true},
{escaped: `\f`, unEscaped: "\f", canRoundTrip: false},
{escaped: `\\`, unEscaped: "\\", canRoundTrip: true},
{escaped: `\u0080`, unEscaped: "\u0080", canRoundTrip: true},
{escaped: `\U00000080`, unEscaped: "\u0080", canRoundTrip: false},
{escaped: `\t\b\n\r\f\"'\\`, unEscaped: "\t\b\n\r\f\"'\\", canRoundTrip: false},
{escaped: `\t\u0080`, unEscaped: "\t\u0080", canRoundTrip: false},
{escaped: `\b\U00000080`, unEscaped: "\b\u0080", canRoundTrip: false},
{escaped: `\u0080\n`, unEscaped: "\u0080\n", canRoundTrip: true},
{escaped: `\U00000080\r`, unEscaped: "\u0080\r", canRoundTrip: false},
{escaped: `\u00b7\f\U000000b7`, unEscaped: "·\f·", canRoundTrip: false},
{escaped: `\U000000b7\\\u00b7`, unEscaped: "·\\·", canRoundTrip: false},
{escaped: `\U00010105\\\U00010106`, unEscaped: "\U00010105\\\U00010106", canRoundTrip: true},
}
func TestUnescape(t *testing.T) {
for _, test := range escapeSequenceTests {
got := unEscape([]rune(test.escaped))
if got != test.unEscaped {
t.Errorf("Failed to properly unescape %q, got:%q want:%q", test.escaped, got, test.unEscaped)
}
if test.canRoundTrip {
got = escape("", test.unEscaped, "")
if got != test.escaped {
t.Errorf("Failed to properly escape %q, got:%q want:%q", test.unEscaped, got, test.escaped)
}
got = escape(`"`, test.unEscaped, `"`)
if got != `"`+test.escaped+`"` {
t.Errorf("Failed to properly escape %q quoted, got:%q want:%q", test.unEscaped, got, `"`+test.escaped+`"`)
}
}
}
}
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