github.com/anakojm/hugo-katex@v0.0.0-20231023141351-42d6f5de9c0b/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/config/testconfig"
    27  	"github.com/spf13/afero"
    28  	"github.com/spf13/cast"
    29  )
    30  
    31  type tstNoStringer struct{}
    32  
    33  var configTests = []struct {
    34  	path   any
    35  	input  []byte
    36  	expect any
    37  }{
    38  	{
    39  		path:  "a.png",
    40  		input: blankImage(10, 10),
    41  		expect: image.Config{
    42  			Width:      10,
    43  			Height:     10,
    44  			ColorModel: color.NRGBAModel,
    45  		},
    46  	},
    47  	{
    48  		path:  "a.png",
    49  		input: blankImage(10, 10),
    50  		expect: image.Config{
    51  			Width:      10,
    52  			Height:     10,
    53  			ColorModel: color.NRGBAModel,
    54  		},
    55  	},
    56  	{
    57  		path:  "b.png",
    58  		input: blankImage(20, 15),
    59  		expect: image.Config{
    60  			Width:      20,
    61  			Height:     15,
    62  			ColorModel: color.NRGBAModel,
    63  		},
    64  	},
    65  	{
    66  		path:  "a.png",
    67  		input: blankImage(20, 15),
    68  		expect: image.Config{
    69  			Width:      10,
    70  			Height:     10,
    71  			ColorModel: color.NRGBAModel,
    72  		},
    73  	},
    74  	// errors
    75  	{path: tstNoStringer{}, expect: false},
    76  	{path: "non-existent.png", expect: false},
    77  	{path: "", expect: false},
    78  }
    79  
    80  func TestNSConfig(t *testing.T) {
    81  	t.Parallel()
    82  	c := qt.New(t)
    83  
    84  	afs := afero.NewMemMapFs()
    85  	v := config.New()
    86  	v.Set("workingDir", "/a/b")
    87  	d := testconfig.GetTestDeps(afs, v)
    88  	bcfg := d.Conf
    89  
    90  	ns := New(d)
    91  
    92  	for _, test := range configTests {
    93  
    94  		// check for expected errors early to avoid writing files
    95  		if b, ok := test.expect.(bool); ok && !b {
    96  			_, err := ns.Config(test.path)
    97  			c.Assert(err, qt.Not(qt.IsNil))
    98  			continue
    99  		}
   100  
   101  		// cast path to string for afero.WriteFile
   102  		sp, err := cast.ToStringE(test.path)
   103  		c.Assert(err, qt.IsNil)
   104  		afero.WriteFile(ns.deps.Fs.Source, filepath.Join(bcfg.WorkingDir(), sp), test.input, 0755)
   105  
   106  		result, err := ns.Config(test.path)
   107  
   108  		c.Assert(err, qt.IsNil)
   109  		c.Assert(result, qt.Equals, test.expect)
   110  		c.Assert(len(ns.cache), qt.Not(qt.Equals), 0)
   111  	}
   112  }
   113  
   114  func blankImage(width, height int) []byte {
   115  	var buf bytes.Buffer
   116  	img := image.NewRGBA(image.Rect(0, 0, width, height))
   117  	if err := png.Encode(&buf, img); err != nil {
   118  		panic(err)
   119  	}
   120  	return buf.Bytes()
   121  }