Move icon generation into dedicated files

icons/idicons_test.go

@@ -0,0 +1,36 @@
+package icons
+
+import (
+	"bytes"
+	"image/png"
+	"testing"
+)
+
+func TestIgnoreCase(t *testing.T) {
+	iconGenerator := IdIconGenerator{}
+
+	w1 := bytes.NewBuffer([]byte{})
+	png.Encode(w1, iconGenerator.GenIcon("example", 80, ColorV1))
+
+	w2 := bytes.NewBuffer([]byte{})
+	png.Encode(w2, iconGenerator.GenIcon("Example", 80, ColorV1))
+
+	if bytes.Compare(w1.Bytes(), w2.Bytes()) != 0 {
+		t.Errorf("resulting images do not match")
+	}
+}
+
+func TestStringMatchesHash(t *testing.T) {
+	iconGenerator := IdIconGenerator{}
+
+	w1 := bytes.NewBuffer([]byte{})
+	// MD5 of lowercase 'example'
+	png.Encode(w1, iconGenerator.GenIcon("1a79a4d60de6718e8e5b326e338ae533", 80, ColorV2))
+
+	w2 := bytes.NewBuffer([]byte{})
+	png.Encode(w2, iconGenerator.GenIcon("Example", 80, ColorV2))
+
+	if bytes.Compare(w1.Bytes(), w2.Bytes()) != 0 {
+		t.Errorf("resulting images do not match")
+	}
+}