resources: Fix image Width/Height regression

Fixes #6120

2 files changed, 116 insertions, 0 deletions

diff --git a/hugolib/image_test.go b/hugolib/image_test.go
new file mode 100644
index 000000000..9d92d7fd4
--- /dev/null
+++ b/hugolib/image_test.go
@@ -0,0 +1,114 @@
+// 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 hugolib
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/gohugoio/hugo/htesting"
+
+	"github.com/gohugoio/hugo/hugofs"
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+// We have many tests for the different resize operations etc. in the resource package,
+// this is an integration test.
+func TestImageResize(t *testing.T) {
+	assert := require.New(t)
+	// Make this a real as possible.
+	workDir, clean, err := htesting.CreateTempDir(hugofs.Os, "image-resize")
+	assert.NoError(err)
+	defer clean()
+
+	newBuilder := func() *sitesBuilder {
+
+		v := viper.New()
+		v.Set("workingDir", workDir)
+		v.Set("baseURL", "https://example.org")
+
+		b := newTestSitesBuilder(t).WithWorkingDir(workDir)
+		b.Fs = hugofs.NewDefault(v)
+		b.WithViper(v)
+		b.WithContent("mybundle/index.md", `
+---
+title: "My bundle"
+---
+
+`)
+
+		b.WithTemplatesAdded("index.html", `
+{{ $p := .Site.GetPage "mybundle" }}
+{{ $img1 := resources.Get "images/sunset.jpg" }}
+{{ $img2 := $p.Resources.GetMatch "sunset.jpg" }}
+{{ $r := $img1.Resize "123x234" }}
+{{ $r2 := $r.Resize "12x23" }}
+{{ $b := $img2.Resize "345x678" }}
+{{ $b2 := $b.Resize "34x67" }}
+
+{{ $images := slice $r $r2 $b $b2 }}
+
+{{ range $i, $r := $images }}
+{{ printf "Resized%d:" (add $i  1) }} {{ $r.Name }}|{{ $r.Width }}|{{ $r.Height }}|{{ $r.MediaType }}|{{ $r.RelPermalink }}|
+{{ end }}
+
+`)
+
+		return b
+	}
+
+	imageDir := filepath.Join(workDir, "assets", "images")
+	bundleDir := filepath.Join(workDir, "content", "mybundle")
+
+	assert.NoError(os.MkdirAll(imageDir, 0777))
+	assert.NoError(os.MkdirAll(bundleDir, 0777))
+	src, err := os.Open("testdata/sunset.jpg")
+	assert.NoError(err)
+	out, err := os.Create(filepath.Join(imageDir, "sunset.jpg"))
+	assert.NoError(err)
+	_, err = io.Copy(out, src)
+	assert.NoError(err)
+	out.Close()
+
+	src.Seek(0, 0)
+
+	out, err = os.Create(filepath.Join(bundleDir, "sunset.jpg"))
+	assert.NoError(err)
+	_, err = io.Copy(out, src)
+	assert.NoError(err)
+	out.Close()
+	src.Close()
+
+	b := newBuilder()
+	b.Build(BuildCfg{})
+
+	imgExpect := []string{
+		"Resized1: images/sunset.jpg|123|234|image/jpg|/images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_123x234_resize_q75_box.jpg|",
+		"Resized2: images/sunset.jpg|12|23|image/jpg|/images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_ada4bb1a57f77a63306e3bd67286248e.jpg|",
+		"Resized3: sunset.jpg|345|678|image/jpg|/mybundle/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_345x678_resize_q75_box.jpg|",
+		"Resized4: sunset.jpg|34|67|image/jpg|/mybundle/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_44d8c928664d7c5a67377c6ec58425ce.jpg|",
+	}
+
+	b.AssertFileContent(filepath.Join(workDir, "public/index.html"), imgExpect...)
+
+	// Build it again to make sure we read images from file cache.
+	b = newBuilder()
+	b.Build(BuildCfg{})
+
+	b.AssertFileContent(filepath.Join(workDir, "public/index.html"), imgExpect...)
+
+}
diff --git a/resources/image_cache.go b/resources/image_cache.go
index 4072851e2..3324e442e 100644
--- a/resources/image_cache.go
+++ b/resources/image_cache.go
@@ -91,6 +91,8 @@ func (c *imageCache) getOrCreate(
 		img = parent.clone()
 		img.relTargetDirFile.file = relTarget.file
 		img.sourceFilename = info.Name
+		// Make sure it's always loaded by sourceFilename.
+		img.openReadSeekerCloser = nil
 
 		w, err := img.openDestinationsForWriting()
 		if err != nil {