Adding modding folder with a hacked build.

modding/hacked/ss1/serial/errorBuffer_test.go

@@ -0,0 +1,56 @@
+package serial_test
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/inkyblackness/hacked/ss1"
+)
+
+type errorBuffer struct {
+	position        int64
+	callCounter     int
+	errorOnNextCall bool
+	errorByteCount  int
+}
+
+func (buf *errorBuffer) check() (err error) {
+	buf.callCounter++
+	if buf.errorOnNextCall {
+		buf.errorOnNextCall = false
+		err = ss1.StringError(fmt.Sprintf("errorBuffer on call number %v", buf.callCounter))
+	}
+	return
+}
+
+func (buf *errorBuffer) Seek(offset int64, whence int) (int64, error) {
+	err := buf.check()
+	if err != nil {
+		return 0, err
+	}
+	switch whence {
+	case io.SeekStart:
+		buf.position = offset
+	case io.SeekCurrent:
+		buf.position += offset
+	case io.SeekEnd:
+		panic("SeekEnd not supported")
+	}
+	return buf.position, nil
+}
+
+func (buf *errorBuffer) Read(p []byte) (n int, err error) {
+	err = buf.check()
+	if err != nil {
+		return buf.errorByteCount, err
+	}
+	return len(p), nil
+}
+
+func (buf *errorBuffer) Write(p []byte) (n int, err error) {
+	err = buf.check()
+	if err != nil {
+		return buf.errorByteCount, err
+	}
+	return len(p), nil
+}