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// Copyright 2022 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 base
import (
"bytes"
"strings"
"testing"
)
func TestHashDebugGossahashY(t *testing.T) {
hd := NewHashDebug("GOSSAHASH", "y", nil)
if hd == nil {
t.Errorf("NewHashDebug should not return nil for GOSSASHASH=y")
}
if !hd.yes {
t.Errorf("NewHashDebug should return hd.yes==true for GOSSASHASH=y")
}
if hd.no {
t.Errorf("NewHashDebug should not return hd.no==true for GOSSASHASH=y")
}
}
func TestHashDebugGossahashN(t *testing.T) {
hd := NewHashDebug("GOSSAHASH", "n", nil)
if hd == nil {
t.Errorf("NewHashDebug should not return nil for GOSSASHASH=n")
}
if !hd.no {
t.Errorf("NewHashDebug should return hd.no==true GOSSASHASH=n")
}
if hd.yes {
t.Errorf("NewHashDebug should not return hd.yes==true for GOSSASHASH=n")
}
}
func TestHashDebugGossahashEmpty(t *testing.T) {
hd := NewHashDebug("GOSSAHASH", "", nil)
if hd != nil {
t.Errorf("NewHashDebug should return nil for GOSSASHASH=\"\"")
}
}
func TestHashDebugMagic(t *testing.T) {
hd := NewHashDebug("FOOXYZZY", "y", nil)
hd0 := NewHashDebug("FOOXYZZY0", "n", nil)
if hd == nil {
t.Errorf("NewHashDebug should have succeeded for FOOXYZZY")
}
if hd0 == nil {
t.Errorf("NewHashDebug should have succeeded for FOOXYZZY0")
}
}
func TestHash(t *testing.T) {
h0 := hashOf("bar", 0)
h1 := hashOf("bar", 1)
t.Logf(`These values are used in other tests: hashOf("bar,0)"=0x%x, hashOf("bar,1)"=0x%x`, h0, h1)
if h0 == h1 {
t.Errorf("Hashes 0x%x and 0x%x should differ", h0, h1)
}
}
func TestHashMatch(t *testing.T) {
ws := new(bufferWithSync)
hd := NewHashDebug("GOSSAHASH", "0011", ws)
check := hd.DebugHashMatch("bar")
msg := ws.String()
t.Logf("message was '%s'", msg)
if !check {
t.Errorf("GOSSAHASH=0011 should have matched for 'bar'")
}
wantPrefix(t, msg, "GOSSAHASH triggered bar ")
}
func TestHashMatchParam(t *testing.T) {
ws := new(bufferWithSync)
hd := NewHashDebug("GOSSAHASH", "1010", ws)
check := hd.DebugHashMatchParam("bar", 1)
msg := ws.String()
t.Logf("message was '%s'", msg)
if !check {
t.Errorf("GOSSAHASH=1010 should have matched for 'bar', 1")
}
wantPrefix(t, msg, "GOSSAHASH triggered bar:1 ")
}
func TestYMatch(t *testing.T) {
ws := new(bufferWithSync)
hd := NewHashDebug("GOSSAHASH", "y", ws)
check := hd.DebugHashMatch("bar")
msg := ws.String()
t.Logf("message was '%s'", msg)
if !check {
t.Errorf("GOSSAHASH=y should have matched for 'bar'")
}
wantPrefix(t, msg, "GOSSAHASH triggered bar y")
}
func TestNMatch(t *testing.T) {
ws := new(bufferWithSync)
hd := NewHashDebug("GOSSAHASH", "n", ws)
check := hd.DebugHashMatch("bar")
msg := ws.String()
t.Logf("message was '%s'", msg)
if check {
t.Errorf("GOSSAHASH=n should NOT have matched for 'bar'")
}
if msg != "" {
t.Errorf("Message should have been empty, instead %s", msg)
}
}
func TestHashNoMatch(t *testing.T) {
ws := new(bufferWithSync)
hd := NewHashDebug("GOSSAHASH", "001100", ws)
check := hd.DebugHashMatch("bar")
msg := ws.String()
t.Logf("message was '%s'", msg)
if check {
t.Errorf("GOSSAHASH=001100 should NOT have matched for 'bar'")
}
if msg != "" {
t.Errorf("Message should have been empty, instead %s", msg)
}
}
func TestHashSecondMatch(t *testing.T) {
ws := new(bufferWithSync)
hd := NewHashDebug("GOSSAHASH", "001100/0011", ws)
check := hd.DebugHashMatch("bar")
msg := ws.String()
t.Logf("message was '%s'", msg)
if !check {
t.Errorf("GOSSAHASH=001100, GOSSAHASH0=0011 should have matched for 'bar'")
}
wantPrefix(t, msg, "GOSSAHASH0 triggered bar")
}
type bufferWithSync struct {
b bytes.Buffer
}
func (ws *bufferWithSync) Sync() error {
return nil
}
func (ws *bufferWithSync) Write(p []byte) (n int, err error) {
return (&ws.b).Write(p)
}
func (ws *bufferWithSync) String() string {
return strings.TrimSpace((&ws.b).String())
}
func wantPrefix(t *testing.T, got, want string) {
if !strings.HasPrefix(got, want) {
t.Errorf("Want %s, got %s", want, got)
}
}
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