hugo/resources/images/exif/exif_test.go

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// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package exif
import (
"encoding/json"
"math/big"
"os"
"path/filepath"
"testing"
"time"
"github.com/gohugoio/hugo/htesting/hqt"
"github.com/google/go-cmp/cmp"
qt "github.com/frankban/quicktest"
)
func TestExif(t *testing.T) {
c := qt.New(t)
f, err := os.Open(filepath.FromSlash("../../testdata/sunset.jpg"))
c.Assert(err, qt.IsNil)
defer f.Close()
d, err := NewDecoder(IncludeFields("Lens|Date"))
c.Assert(err, qt.IsNil)
x, err := d.Decode(f)
c.Assert(err, qt.IsNil)
c.Assert(x.Date.Format("2006-01-02"), qt.Equals, "2017-10-27")
// Malaga: https://goo.gl/taazZy
c.Assert(x.Lat, qt.Equals, float64(36.59744166666667))
c.Assert(x.Long, qt.Equals, float64(-4.50846))
v, found := x.Tags["LensModel"]
c.Assert(found, qt.Equals, true)
lensModel, ok := v.(string)
c.Assert(ok, qt.Equals, true)
c.Assert(lensModel, qt.Equals, "smc PENTAX-DA* 16-50mm F2.8 ED AL [IF] SDM")
v, found = x.Tags["DateTime"]
c.Assert(found, qt.Equals, true)
c.Assert(v, hqt.IsSameType, time.Time{})
// Verify that it survives a round-trip to JSON and back.
data, err := json.Marshal(x)
c.Assert(err, qt.IsNil)
x2 := &Exif{}
err = json.Unmarshal(data, x2)
c.Assert(x2, eq, x)
}
func TestExifPNG(t *testing.T) {
c := qt.New(t)
f, err := os.Open(filepath.FromSlash("../../testdata/gohugoio.png"))
c.Assert(err, qt.IsNil)
defer f.Close()
d, err := NewDecoder()
c.Assert(err, qt.IsNil)
_, err = d.Decode(f)
c.Assert(err, qt.Not(qt.IsNil))
}
func BenchmarkDecodeExif(b *testing.B) {
c := qt.New(b)
f, err := os.Open(filepath.FromSlash("../../testdata/sunset.jpg"))
c.Assert(err, qt.IsNil)
defer f.Close()
d, err := NewDecoder()
c.Assert(err, qt.IsNil)
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err = d.Decode(f)
c.Assert(err, qt.IsNil)
f.Seek(0, 0)
}
}
var eq = qt.CmpEquals(
cmp.Comparer(
func(v1, v2 *big.Rat) bool {
return v1.RatString() == v2.RatString()
},
),
cmp.Comparer(func(v1, v2 time.Time) bool {
return v1.Unix() == v2.Unix()
}),
)