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// Copyright 2017 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 images
import (
"bytes"
"fmt"
"image"
"image/color"
"image/png"
"path/filepath"
"testing"
"github.com/gohugoio/hugo/deps"
"github.com/gohugoio/hugo/hugofs"
"github.com/spf13/afero"
"github.com/spf13/cast"
"github.com/spf13/viper"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type tstNoStringer struct{}
var configTests = []struct {
path interface{}
input []byte
expect interface{}
}{
{
path: "a.png",
input: blankImage(10, 10),
expect: image.Config{
Width: 10,
Height: 10,
ColorModel: color.NRGBAModel,
},
},
{
path: "a.png",
input: blankImage(10, 10),
expect: image.Config{
Width: 10,
Height: 10,
ColorModel: color.NRGBAModel,
},
},
{
path: "b.png",
input: blankImage(20, 15),
expect: image.Config{
Width: 20,
Height: 15,
ColorModel: color.NRGBAModel,
},
},
{
path: "a.png",
input: blankImage(20, 15),
expect: image.Config{
Width: 10,
Height: 10,
ColorModel: color.NRGBAModel,
},
},
// errors
{path: tstNoStringer{}, expect: false},
{path: "non-existent.png", expect: false},
{path: "", expect: false},
}
func TestNSConfig(t *testing.T) {
t.Parallel()
v := viper.New()
v.Set("workingDir", "/a/b")
ns := New(&deps.Deps{Fs: hugofs.NewMem(v)})
for i, test := range configTests {
errMsg := fmt.Sprintf("[%d] %s", i, test.path)
// check for expected errors early to avoid writing files
if b, ok := test.expect.(bool); ok && !b {
_, err := ns.Config(test.path)
require.Error(t, err, errMsg)
continue
}
// cast path to string for afero.WriteFile
sp, err := cast.ToStringE(test.path)
require.NoError(t, err, errMsg)
afero.WriteFile(ns.deps.Fs.Source, filepath.Join(v.GetString("workingDir"), sp), test.input, 0755)
result, err := ns.Config(test.path)
require.NoError(t, err, errMsg)
assert.Equal(t, test.expect, result, errMsg)
assert.NotEqual(t, 0, len(ns.cache), errMsg)
}
}
func blankImage(width, height int) []byte {
var buf bytes.Buffer
img := image.NewRGBA(image.Rect(0, 0, width, height))
if err := png.Encode(&buf, img); err != nil {
panic(err)
}
return buf.Bytes()
}
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