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arc/vendor/github.com/codahale/sss/polynomial_test.go
2016-05-24 21:26:50 +09:00

90 lines
1.6 KiB
Go

package sss
import (
"bytes"
"testing"
)
var (
p = []byte{1, 0, 2, 3}
p2 = []byte{70, 32, 6}
)
func TestDegree(t *testing.T) {
if v, want := degree(p), 3; v != want {
t.Errorf("Was %v, but expected %v", v, want)
}
}
func TestEval(t *testing.T) {
if v, want := eval(p, 2), byte(17); v != want {
t.Errorf("Was %v, but expected %v", v, want)
}
}
func TestGenerate(t *testing.T) {
b := []byte{1, 2, 3}
expected := []byte{10, 1, 2, 3}
actual, err := generate(3, 10, bytes.NewReader(b))
if err != nil {
t.Error(err)
}
if !bytes.Equal(actual, expected) {
t.Errorf("Was %v, but expected %v", actual, expected)
}
}
func TestGenerateEOF(t *testing.T) {
b := []byte{1}
p, err := generate(3, 10, bytes.NewReader(b))
if p != nil {
t.Errorf("Was %v, but expected an error", p)
}
if err == nil {
t.Error("No error returned")
}
}
func TestGeneratePolyEOFFullSize(t *testing.T) {
b := []byte{1, 2, 0, 0, 0, 0}
p, err := generate(3, 10, bytes.NewReader(b))
if p != nil {
t.Errorf("Was %v, but xpected an error", p)
}
if err == nil {
t.Error("No error returned")
}
}
func TestGenerateFullSize(t *testing.T) {
b := []byte{1, 2, 0, 4}
expected := []byte{10, 1, 2, 4}
actual, err := generate(3, 10, bytes.NewReader(b))
if err != nil {
t.Error(err)
}
if !bytes.Equal(actual, expected) {
t.Errorf("Was %v but expected %v", actual, expected)
}
}
func TestInterpolate(t *testing.T) {
in := []pair{
pair{x: 1, y: 1},
pair{x: 2, y: 2},
pair{x: 3, y: 3},
}
if v, want := interpolate(in, 0), byte(0); v != want {
t.Errorf("Was %v, but expected %v", v, want)
}
}