append_test.go

package gotrax

import (
	"math/big"
	"testing"
	"time"

	. "gopkg.in/check.v1"
)

func Test(t *testing.T) { TestingT(t) }

type GotraxSuite struct{}

var _ = Suite(&GotraxSuite{})

func (s *GotraxSuite) Test_AppendLong_serializesTimeCorrectly(c *C) {
	tt := time.Date(2028, 11, 5, 13, 46, 00, 13, time.UTC)
	num := tt.Unix()
	c.Assert(num, Equals, int64(0x6EB04118))
	c.Assert(AppendLong(nil, uint64(num)), DeepEquals, []byte{0x00, 0x00, 0x00, 0x00, 0x6e, 0xb0, 0x41, 0x18})

	tt2 := time.Date(1968, 11, 5, 13, 46, 00, 13, time.UTC)
	num2 := tt2.Unix()
	c.Assert(num2, Equals, int64(-0x022B9768))
	c.Assert(AppendLong(nil, uint64(num2)), DeepEquals, []byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFD, 0xD4, 0x68, 0x98})
}

func (s *GotraxSuite) Test_AppendShort_willAppendTheShort(c *C) {
	before := []byte{0x12, 0x14}
	result := AppendShort(before, 0x4215)
	c.Assert(result, DeepEquals, []byte{0x12, 0x14, 0x42, 0x15})
}

func (s *GotraxSuite) Test_AppendWord_WillAppendTheWord(c *C) {
	before := []byte{0x12, 0x14}
	result := AppendWord(before, 0x334D1215)
	c.Assert(result, DeepEquals, []byte{0x12, 0x14, 0x33, 0x4D, 0x12, 0x15})
}

func (s *GotraxSuite) Test_AppendData_WillAppendBytes(c *C) {
	before := []byte{0x13, 0x54}
	result := AppendData(before, []byte{0x55, 0x12, 0x04, 0x8A, 0x00})
	c.Assert(result, DeepEquals, []byte{0x13, 0x54, 0x00, 0x00, 0x00, 0x05, 0x55, 0x12, 0x04, 0x8A, 0x00})
}

func (s *GotraxSuite) Test_AppendMPI_WillAppendTheMPI(c *C) {
	before := []byte{0x13, 0x54}
	result := AppendMPI(before, new(big.Int).SetBytes([]byte{0x55, 0x12, 0x04, 0x8A, 0x00}))
	c.Assert(result, DeepEquals, []byte{0x13, 0x54, 0x00, 0x00, 0x00, 0x05, 0x55, 0x12, 0x04, 0x8A, 0x00})
}

func (s *GotraxSuite) Test_AppendMPIs_WillAppendTheMPIs(c *C) {
	before := []byte{0x13, 0x54}
	one := new(big.Int).SetBytes([]byte{0x55, 0x12, 0x04, 0x8A, 0x00})
	two := new(big.Int).SetBytes([]byte{0x01, 0x53, 0xCC})
	three := new(big.Int).SetBytes([]byte{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01})
	result := AppendMPIs(before, one, two, three)
	c.Assert(result, DeepEquals, []byte{0x13, 0x54, 0x00, 0x00, 0x00, 0x05, 0x55, 0x12, 0x04, 0x8A, 0x00, 0x00, 0x00, 0x00, 0x03, 0x01, 0x53, 0xCC, 0x00, 0x00, 0x00, 0x0A, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01})
}