Add tests for gsm7

encoding/gsm7.go

@@ -0,0 +1,18 @@
+package encoding
+
+import (
+	"bytes"
+	"log"
+)
+
+type GSM7Coder struct{}
+
+func (c *GSM7Coder) Encode(s string, buf *bytes.Buffer) {
+	utf8 := []byte(s)
+	log.Println(utf8)
+	buf.Write(utf8)
+}
+
+func (c *GSM7Coder) Decode(buf *bytes.Buffer) string {
+	return buf.String()
+}