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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tlog
import (
"strings"
"testing"
)
func TestFormatTree(t *testing.T) {
n := int64(123456789012)
h := RecordHash([]byte("hello world"))
golden := "go.sum database tree\n123456789012\nTszzRgjTG6xce+z2AG31kAXYKBgQVtCSCE40HmuwBb0=\n"
b := FormatTree(Tree{n, h})
if string(b) != golden {
t.Errorf("FormatTree(...) = %q, want %q", b, golden)
}
}
func TestParseTree(t *testing.T) {
in := "go.sum database tree\n123456789012\nTszzRgjTG6xce+z2AG31kAXYKBgQVtCSCE40HmuwBb0=\n"
goldH := RecordHash([]byte("hello world"))
goldN := int64(123456789012)
tree, err := ParseTree([]byte(in))
if tree.N != goldN || tree.Hash != goldH || err != nil {
t.Fatalf("ParseTree(...) = Tree{%d, %v}, %v, want Tree{%d, %v}, nil", tree.N, tree.Hash, err, goldN, goldH)
}
// Check invalid trees.
var badTrees = []string{
"not-" + in,
"go.sum database tree\n0xabcdef\nTszzRgjTG6xce+z2AG31kAXYKBgQVtCSCE40HmuwBb0=\n",
"go.sum database tree\n123456789012\nTszzRgjTG6xce+z2AG31kAXYKBgQVtCSCE40HmuwBTOOBIG=\n",
}
for _, bad := range badTrees {
_, err := ParseTree([]byte(bad))
if err == nil {
t.Fatalf("ParseTree(%q) succeeded, want failure", in)
}
}
// Check junk on end is ignored.
var goodTrees = []string{
in + "JOE",
in + "JOE\n",
in + strings.Repeat("JOE\n", 1000),
}
for _, good := range goodTrees {
_, err := ParseTree([]byte(good))
if tree.N != goldN || tree.Hash != goldH || err != nil {
t.Fatalf("ParseTree(...+%q) = Tree{%d, %v}, %v, want Tree{%d, %v}, nil", good[len(in):], tree.N, tree.Hash, err, goldN, goldH)
}
}
}
func TestFormatRecord(t *testing.T) {
id := int64(123456789012)
text := "hello, world\n"
golden := "123456789012\nhello, world\n\n"
msg, err := FormatRecord(id, []byte(text))
if err != nil {
t.Fatalf("FormatRecord: %v", err)
}
if string(msg) != golden {
t.Fatalf("FormatRecord(...) = %q, want %q", msg, golden)
}
var badTexts = []string{
"",
"hello\nworld",
"hello\n\nworld\n",
"hello\x01world\n",
}
for _, bad := range badTexts {
msg, err := FormatRecord(id, []byte(bad))
if err == nil {
t.Errorf("FormatRecord(id, %q) = %q, want error", bad, msg)
}
}
}
func TestParseRecord(t *testing.T) {
in := "123456789012\nhello, world\n\njunk on end\x01\xff"
goldID := int64(123456789012)
goldText := "hello, world\n"
goldRest := "junk on end\x01\xff"
id, text, rest, err := ParseRecord([]byte(in))
if id != goldID || string(text) != goldText || string(rest) != goldRest || err != nil {
t.Fatalf("ParseRecord(%q) = %d, %q, %q, %v, want %d, %q, %q, nil", in, id, text, rest, err, goldID, goldText, goldRest)
}
in = "123456789012\nhello, world\n\n"
id, text, rest, err = ParseRecord([]byte(in))
if id != goldID || string(text) != goldText || len(rest) != 0 || err != nil {
t.Fatalf("ParseRecord(%q) = %d, %q, %q, %v, want %d, %q, %q, nil", in, id, text, rest, err, goldID, goldText, "")
}
if rest == nil {
t.Fatalf("ParseRecord(%q): rest = []byte(nil), want []byte{}", in)
}
// Check invalid records.
var badRecords = []string{
"not-" + in,
"123\nhello\x01world\n\n",
"123\nhello\xffworld\n\n",
"123\nhello world\n",
"0x123\nhello world\n\n",
}
for _, bad := range badRecords {
id, text, rest, err := ParseRecord([]byte(bad))
if err == nil {
t.Fatalf("ParseRecord(%q) = %d, %q, %q, nil, want error", in, id, text, rest)
}
}
}
// FuzzParseTree tests that ParseTree never crashes
func FuzzParseTree(f *testing.F) {
f.Add([]byte("go.sum database tree\n123456789012\nTszzRgjTG6xce+z2AG31kAXYKBgQVtCSCE40HmuwBb0=\n"))
f.Fuzz(func(t *testing.T, text []byte) {
ParseTree(text)
})
}
// FuzzParseRecord tests that ParseRecord never crashes
func FuzzParseRecord(f *testing.F) {
f.Add([]byte("12345\nhello\n\n"))
f.Fuzz(func(t *testing.T, msg []byte) {
ParseRecord(msg)
})
}
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