add collage package

collage/collage_test.go

@@ -0,0 +1,24 @@
+package collage
+
+import (
+	"embed"
+	"fmt"
+	"io/fs"
+	"testing"
+)
+
+//go:embed test_data/*
+var testData embed.FS
+
+func TestMake(t *testing.T) {
+	t.Log("Test was run")
+	ifs, err := fs.Sub(testData, "test_data")
+	if err != nil {
+		t.Fatalf("getting test_data subdir failed %v", err)
+	}
+	img1f, err := ifs.Open("img1.jpg")
+	if err != nil {
+		t.Fatalf("opening image failed %v", err)
+	}
+	fmt.Printf("%#v\n", img1f)
+}