108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package common
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import (
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"bytes"
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"testing"
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)
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func TestCopyBytes(t *testing.T) {
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input := []byte{1, 2, 3, 4}
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v := CopyBytes(input)
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if !bytes.Equal(v, []byte{1, 2, 3, 4}) {
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t.Fatal("not equal after copy")
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}
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v[0] = 99
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if bytes.Equal(v, input) {
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t.Fatal("result is not a copy")
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}
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}
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func TestLeftPadBytes(t *testing.T) {
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val := []byte{1, 2, 3, 4}
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padded := []byte{0, 0, 0, 0, 1, 2, 3, 4}
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if r := LeftPadBytes(val, 8); !bytes.Equal(r, padded) {
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t.Fatalf("LeftPadBytes(%v, 8) == %v", val, r)
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}
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if r := LeftPadBytes(val, 2); !bytes.Equal(r, val) {
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t.Fatalf("LeftPadBytes(%v, 2) == %v", val, r)
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}
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}
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func TestRightPadBytes(t *testing.T) {
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val := []byte{1, 2, 3, 4}
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padded := []byte{1, 2, 3, 4, 0, 0, 0, 0}
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if r := RightPadBytes(val, 8); !bytes.Equal(r, padded) {
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t.Fatalf("RightPadBytes(%v, 8) == %v", val, r)
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}
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if r := RightPadBytes(val, 2); !bytes.Equal(r, val) {
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t.Fatalf("RightPadBytes(%v, 2) == %v", val, r)
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}
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}
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func TestFromHex(t *testing.T) {
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input := "0x01"
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expected := []byte{1}
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result := FromHex(input)
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if !bytes.Equal(expected, result) {
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t.Errorf("Expected %x got %x", expected, result)
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}
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}
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func TestIsHex(t *testing.T) {
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tests := []struct {
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input string
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ok bool
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}{
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{"", true},
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{"0", false},
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{"00", true},
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{"a9e67e", true},
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{"A9E67E", true},
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{"0xa9e67e", false},
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{"a9e67e001", false},
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{"0xHELLO_MY_NAME_IS_STEVEN_@#$^&*", false},
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}
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for _, test := range tests {
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if ok := isHex(test.input); ok != test.ok {
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t.Errorf("isHex(%q) = %v, want %v", test.input, ok, test.ok)
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}
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}
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}
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func TestFromHexOddLength(t *testing.T) {
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input := "0x1"
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expected := []byte{1}
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result := FromHex(input)
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if !bytes.Equal(expected, result) {
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t.Errorf("Expected %x got %x", expected, result)
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}
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}
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func TestNoPrefixShortHexOddLength(t *testing.T) {
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input := "1"
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expected := []byte{1}
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result := FromHex(input)
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if !bytes.Equal(expected, result) {
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t.Errorf("Expected %x got %x", expected, result)
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}
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}
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