1 files changed, 78 insertions, 0 deletions
diff --git a/resource/testhelpers_test.go b/resource/testhelpers_test.go
new file mode 100644
index 000000000..7ab210688
--- /dev/null
+++ b/resource/testhelpers_test.go
@@ -0,0 +1,78 @@
+package resource
+
+import (
+	"path/filepath"
+	"testing"
+
+	"image"
+	"io"
+	"os"
+	"path"
+
+	"github.com/gohugoio/hugo/helpers"
+	"github.com/gohugoio/hugo/hugofs"
+	"github.com/gohugoio/hugo/media"
+	"github.com/spf13/afero"
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func newTestResourceSpec(assert *require.Assertions) *Spec {
+	cfg := viper.New()
+	cfg.Set("baseURL", "https://example.com/")
+	cfg.Set("resourceDir", "/res")
+	fs := hugofs.NewMem(cfg)
+
+	s, err := helpers.NewPathSpec(fs, cfg)
+	assert.NoError(err)
+
+	spec, err := NewSpec(s, media.DefaultTypes)
+	assert.NoError(err)
+	return spec
+}
+
+func fetchSunset(assert *require.Assertions) *Image {
+	src, err := os.Open("testdata/sunset.jpg")
+	assert.NoError(err)
+
+	spec := newTestResourceSpec(assert)
+
+	out, err := spec.Fs.Source.Create("/b/sunset.jpg")
+	assert.NoError(err)
+	_, err = io.Copy(out, src)
+	out.Close()
+	src.Close()
+	assert.NoError(err)
+
+	factory := func(s string) string {
+		return path.Join("/a", s)
+	}
+
+	r, err := spec.NewResourceFromFilename(factory, "/public", "/b/sunset.jpg", "sunset.jpg")
+	assert.NoError(err)
+	assert.IsType(&Image{}, r)
+	return r.(*Image)
+
+}
+
+func assertFileCache(assert *require.Assertions, fs *hugofs.Fs, filename string, width, height int) {
+	f, err := fs.Source.Open(filepath.Join("/res/_gen/images", filename))
+	assert.NoError(err)
+	defer f.Close()
+
+	config, _, err := image.DecodeConfig(f)
+	assert.NoError(err)
+
+	assert.Equal(width, config.Width)
+	assert.Equal(height, config.Height)
+}
+
+func writeSource(t testing.TB, fs *hugofs.Fs, filename, content string) {
+	writeToFs(t, fs.Source, filename, content)
+}
+
+func writeToFs(t testing.TB, fs afero.Fs, filename, content string) {
+	if err := afero.WriteFile(fs, filepath.FromSlash(filename), []byte(content), 0755); err != nil {
+		t.Fatalf("Failed to write file: %s", err)
+	}
+}