github.com/linchen2chris/hugo@v0.0.0-20230307053224-cec209389705/tpl/images/images_test.go (about)

     1  // Copyright 2017 The Hugo Authors. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package images
    15  
    16  import (
    17  	"bytes"
    18  	"image"
    19  	"image/color"
    20  	"image/png"
    21  	"path/filepath"
    22  	"testing"
    23  
    24  	qt "github.com/frankban/quicktest"
    25  	"github.com/gohugoio/hugo/config"
    26  	"github.com/gohugoio/hugo/deps"
    27  	"github.com/gohugoio/hugo/hugofs"
    28  	"github.com/spf13/afero"
    29  	"github.com/spf13/cast"
    30  )
    31  
    32  type tstNoStringer struct{}
    33  
    34  var configTests = []struct {
    35  	path   any
    36  	input  []byte
    37  	expect any
    38  }{
    39  	{
    40  		path:  "a.png",
    41  		input: blankImage(10, 10),
    42  		expect: image.Config{
    43  			Width:      10,
    44  			Height:     10,
    45  			ColorModel: color.NRGBAModel,
    46  		},
    47  	},
    48  	{
    49  		path:  "a.png",
    50  		input: blankImage(10, 10),
    51  		expect: image.Config{
    52  			Width:      10,
    53  			Height:     10,
    54  			ColorModel: color.NRGBAModel,
    55  		},
    56  	},
    57  	{
    58  		path:  "b.png",
    59  		input: blankImage(20, 15),
    60  		expect: image.Config{
    61  			Width:      20,
    62  			Height:     15,
    63  			ColorModel: color.NRGBAModel,
    64  		},
    65  	},
    66  	{
    67  		path:  "a.png",
    68  		input: blankImage(20, 15),
    69  		expect: image.Config{
    70  			Width:      10,
    71  			Height:     10,
    72  			ColorModel: color.NRGBAModel,
    73  		},
    74  	},
    75  	// errors
    76  	{path: tstNoStringer{}, expect: false},
    77  	{path: "non-existent.png", expect: false},
    78  	{path: "", expect: false},
    79  }
    80  
    81  func TestNSConfig(t *testing.T) {
    82  	t.Parallel()
    83  	c := qt.New(t)
    84  
    85  	v := config.NewWithTestDefaults()
    86  	v.Set("workingDir", "/a/b")
    87  
    88  	ns := New(&deps.Deps{Fs: hugofs.NewMem(v)})
    89  
    90  	for _, test := range configTests {
    91  
    92  		// check for expected errors early to avoid writing files
    93  		if b, ok := test.expect.(bool); ok && !b {
    94  			_, err := ns.Config(test.path)
    95  			c.Assert(err, qt.Not(qt.IsNil))
    96  			continue
    97  		}
    98  
    99  		// cast path to string for afero.WriteFile
   100  		sp, err := cast.ToStringE(test.path)
   101  		c.Assert(err, qt.IsNil)
   102  		afero.WriteFile(ns.deps.Fs.Source, filepath.Join(v.GetString("workingDir"), sp), test.input, 0755)
   103  
   104  		result, err := ns.Config(test.path)
   105  
   106  		c.Assert(err, qt.IsNil)
   107  		c.Assert(result, qt.Equals, test.expect)
   108  		c.Assert(len(ns.cache), qt.Not(qt.Equals), 0)
   109  	}
   110  }
   111  
   112  func blankImage(width, height int) []byte {
   113  	var buf bytes.Buffer
   114  	img := image.NewRGBA(image.Rect(0, 0, width, height))
   115  	if err := png.Encode(&buf, img); err != nil {
   116  		panic(err)
   117  	}
   118  	return buf.Bytes()
   119  }