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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 (
"bytes"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"testing"
"github.com/google/go-cmp/cmp"
)
var deduplicateTests = []struct {
statements string
want string
}{
{},
{
statements: `
_:1 <p:a> _:2 .
`,
want: `_:1 <p:a> _:2 .
`,
},
{
statements: `
_:1 <p:a> _:2 .
_:1 <p:a> _:2 .
`,
want: `_:1 <p:a> _:2 .
`,
},
{
statements: `
_:1 <p:a> _:2 .
_:2 <p:a> _:1 .
_:1 <p:a> _:2 .
`,
want: `_:1 <p:a> _:2 .
_:2 <p:a> _:1 .
`,
},
{
statements: `
_:1 <p:a> _:2 .
_:2 <p:a> _:1 .
_:1 <p:a> _:2 .
_:1 <p:a> _:2 .
`,
want: `_:1 <p:a> _:2 .
_:2 <p:a> _:1 .
`,
},
}
func TestDeduplicate(t *testing.T) {
tests:
for i, test := range deduplicateTests {
var statements []*Statement
dec := NewDecoder(strings.NewReader(test.statements))
for {
s, err := dec.Unmarshal()
if err != nil {
if err != io.EOF {
t.Errorf("error during decoding: %v", err)
continue tests
}
break
}
statements = append(statements, s)
}
var buf strings.Builder
for _, s := range Deduplicate(statements) {
fmt.Fprintln(&buf, s)
}
got := buf.String()
if got != test.want {
t.Errorf("unexpected result for test %d:\n%s", i, cmp.Diff(got, test.want))
}
}
}
func TestURNA(t *testing.T) {
glob, err := filepath.Glob(filepath.Join("testdata", *tests))
if err != nil {
t.Fatalf("Failed to open test suite: %v", err)
}
for _, test := range []struct {
name string
fn func(dst, src []*Statement) ([]*Statement, error)
truth string
}{
{
name: "URDNA2015",
fn: URDNA2015,
truth: "-urdna2015.nq",
},
{
name: "URGNA2012",
fn: URGNA2012,
truth: "-urgna2012.nq",
},
} {
t.Run(test.name, func(t *testing.T) {
for _, path := range glob {
name := filepath.Base(path)
golden := strings.TrimSuffix(path, "-in.nq") + test.truth
want, err := os.ReadFile(golden)
if err != nil {
if !os.IsNotExist(err) {
t.Errorf("Failed to read golden data: %v", err)
}
continue
}
t.Run(name, func(t *testing.T) {
f, err := os.Open(path)
if err != nil {
t.Fatalf("Failed to open test suite in %q: %v", path, err)
}
var statements []*Statement
dec := NewDecoder(f)
for {
s, err := dec.Unmarshal()
if err != nil {
if err == io.EOF {
break
}
t.Fatalf("Unexpected error reading from %q: %v", path, err)
}
statements = append(statements, s)
}
f.Close()
relabeled, _ := test.fn(nil, statements)
var buf bytes.Buffer
for _, s := range relabeled {
fmt.Fprintln(&buf, s)
}
got := buf.Bytes()
if !bytes.Equal(got, want) {
t.Errorf("Unexpected result for %s %s:\ngot:\n%s\nwant:\n%s",
test.name, path, got, want)
}
})
}
})
}
}
func BenchmarkURNA(b *testing.B) {
benchmarks := []string{
"test019-in.nq",
"test044-in.nq",
}
for _, name := range benchmarks {
path := filepath.Join("testdata", name)
b.Run(name, func(b *testing.B) {
f, err := os.Open(path)
if err != nil {
b.Fatalf("Failed to open test suite in %q: %v", path, err)
}
var statements []*Statement
dec := NewDecoder(f)
for {
s, err := dec.Unmarshal()
if err != nil {
if err == io.EOF {
break
}
b.Fatalf("Unexpected error reading from %q: %v", path, err)
}
statements = append(statements, s)
}
f.Close()
for _, bench := range []struct {
name string
fn func(dst, src []*Statement) ([]*Statement, error)
}{
{
name: "URDNA2015",
fn: URDNA2015,
},
{
name: "URGNA2012",
fn: URGNA2012,
},
} {
b.Run(bench.name, func(b *testing.B) {
for i := 0; i < b.N; i++ {
relabeled, _ := bench.fn(nil, statements)
if len(relabeled) != len(statements) {
b.Fatalf("unexpected number of relabeled statements: %d != %d", len(relabeled), len(statements))
}
}
})
}
})
}
}
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