utils: binary, new package that collect all the spare helper functions about binary operations (#102)

1 files changed, 43 insertions, 0 deletions

diff --git a/utils/binary/writer_test.go b/utils/binary/writer_test.go
new file mode 100644
index 0000000..88140a1
--- /dev/null
+++ b/utils/binary/writer_test.go
@@ -0,0 +1,43 @@
+package binary
+
+import (
+	"bytes"
+	"encoding/binary"
+
+	. "gopkg.in/check.v1"
+)
+
+func (s *BinarySuite) TestWrite(c *C) {
+	expected := bytes.NewBuffer(nil)
+	err := binary.Write(expected, binary.BigEndian, int64(42))
+	c.Assert(err, IsNil)
+	err = binary.Write(expected, binary.BigEndian, int32(42))
+	c.Assert(err, IsNil)
+
+	buf := bytes.NewBuffer(nil)
+	err = Write(buf, int64(42), int32(42))
+	c.Assert(err, IsNil)
+	c.Assert(buf, DeepEquals, expected)
+}
+
+func (s *BinarySuite) TestWriteUint32(c *C) {
+	expected := bytes.NewBuffer(nil)
+	err := binary.Write(expected, binary.BigEndian, int32(42))
+	c.Assert(err, IsNil)
+
+	buf := bytes.NewBuffer(nil)
+	err = WriteUint32(buf, 42)
+	c.Assert(err, IsNil)
+	c.Assert(buf, DeepEquals, expected)
+}
+
+func (s *BinarySuite) TestWriteUint16(c *C) {
+	expected := bytes.NewBuffer(nil)
+	err := binary.Write(expected, binary.BigEndian, int16(42))
+	c.Assert(err, IsNil)
+
+	buf := bytes.NewBuffer(nil)
+	err = WriteUint16(buf, 42)
+	c.Assert(err, IsNil)
+	c.Assert(buf, DeepEquals, expected)
+}