func misc(t *testing.T, filename, expectOutput string) {
const (
maxTextSize = 65536
maxRODataSize = 4096
stackSize = 4096
dumpText = false
)
data, err := ioutil.ReadFile(filename)
if err != nil {
t.Fatal(err)
}
wasmReadCloser := wast2wasm(data, false)
defer wasmReadCloser.Close()
wasm := bufio.NewReader(wasmReadCloser)
p, err := runner.NewProgram(maxTextSize, maxRODataSize)
if err != nil {
t.Fatal(err)
}
defer p.Close()
var m Module
m.load(wasm, runner.Env, p.Text, p.ROData, p.RODataAddr(), nil)
p.Seal()
p.SetData(m.Data())
p.SetFunctionMap(m.FunctionMap())
p.SetCallMap(m.CallMap())
minMemorySize, maxMemorySize := m.MemoryLimits()
if dumpText && testing.Verbose() {
dewag.PrintTo(os.Stdout, m.Text(), m.FunctionMap(), nil)
}
var printBuf bytes.Buffer
r, err := p.NewRunner(minMemorySize, maxMemorySize, stackSize)
if err != nil {
t.Fatal(err)
}
defer r.Close()
_, err = r.Run(0, m.Signatures(), &printBuf)
if err != nil {
t.Fatal(err)
}
output := string(printBuf.Bytes())
t.Logf("print output:\n%s", output)
if output != expectOutput {
t.Fail()
}
}
func fuzz(t *testing.T, filename string) {
const (
maxTextSize = 65536
maxRODataSize = 4096
stackSize = 4096
)
p, err := runner.NewProgram(maxTextSize, maxRODataSize)
if err != nil {
t.Fatal(err)
}
defer p.Close()
f, err := os.Open(filename)
if err != nil {
t.Errorf("%s: %v", filename, err)
return
}
defer f.Close()
var m Module
var ok bool
defer func() {
if !ok {
t.Logf("%s: panic", filename)
}
}()
err = m.Load(bufio.NewReader(f), runner.Env, p.Text, p.ROData, p.RODataAddr(), nil)
if err == nil {
t.Logf("%s: no error", filename)
} else {
t.Logf("%s: %v", filename, err)
}
ok = true
}
func testModule(t *testing.T, data []byte, filename string, quiet bool) []byte {
const (
maxTextSize = 0x100000
maxRODataSize = 0x100000
maxMemorySize = 0x100000
stackSize = 4096 // limit stacktrace length
timeout = time.Second * 3
dumpExps = false
dumpText = false
dumpROData = false
dumpGlobals = false
dumpMemory = false
)
module, data := sexp.ParsePanic(data)
if module == nil {
return nil
}
if name := module[0].(string); name != "module" {
t.Logf("%s not supported", name)
return data
}
module = append([]interface{}{
module[0],
[]interface{}{
"import",
sexp.Quote("wag"),
sexp.Quote("get_arg"),
[]interface{}{
"func",
"$get_arg",
[]interface{}{"result", "i64"},
},
},
[]interface{}{
"import",
sexp.Quote("wag"),
sexp.Quote("set_result"),
[]interface{}{
"func",
"$set_result",
[]interface{}{"param", "i32"},
},
},
}, module[1:]...)
var realStartName string
exports := make(map[string]string)
for i := 1; i < len(module); {
item, ok := module[i].([]interface{})
if !ok {
i++
continue
}
var itemName string
switch x := item[0].(type) {
case string:
itemName = x
case sexp.Quoted:
itemName = x.String()
}
switch itemName {
case "start":
realStartName = item[1].(string)
module = append(module[:i], module[i+1:]...)
case "export":
exports[item[1].(string)] = item[2].(string)
module = append(module[:i], module[i+1:]...)
case "func":
if len(item) > 1 {
if expo, ok := item[1].([]interface{}); ok && expo[0].(string) == "export" {
item[1] = "$" + expo[1].(sexp.Quoted).String()
}
if s, ok := item[1].(string); ok && len(item) > 2 {
if expo, ok := item[2].([]interface{}); ok && expo[0].(string) == "export" {
exports[expo[1].(sexp.Quoted).String()] = s[1:]
}
}
}
i++
default:
i++
}
}
testTypes := make(map[int]string)
testFunc := []interface{}{
"func",
"$test",
[]interface{}{
"call",
"$set_result",
[]interface{}{"i32.const", "0xbadc0de"},
},
}
if realStartName != "" {
testFunc = append(testFunc, []interface{}{
"if",
[]interface{}{
"i64.eq",
[]interface{}{"call", "$get_arg"},
[]interface{}{"i64.const", "0"},
},
[]interface{}{
"block",
[]interface{}{"call", realStartName},
[]interface{}{
"set_global",
"$test_result",
[]interface{}{"i64.const", "777"},
},
[]interface{}{"return"},
},
})
}
var idCount int
for {
id := idCount
assert, tail := sexp.ParsePanic(data)
if assert == nil {
data = tail
break
}
testType := assert[0].(string)
if testType == "module" {
break
}
idCount++
data = tail
var argCount int
var exprType string
for _, x := range assert[1:] {
if expr, ok := x.([]interface{}); ok {
argCount++
exprName := expr[0].(string)
if strings.Contains(exprName, ".") {
exprType = strings.SplitN(exprName, ".", 2)[0]
break
}
}
}
if argCount > 1 && exprType == "" {
t.Fatalf("can't figure out type of %s", sexp.Stringify(assert, true))
}
invoke2call(exports, assert[1:])
var test []interface{}
switch testType {
case "assert_return":
if argCount > 1 {
var check interface{}
switch exprType {
case "f32", "f64":
bitsType := strings.Replace(exprType, "f", "i", 1)
check = []interface{}{
bitsType + ".eq",
[]interface{}{
bitsType + ".reinterpret/" + exprType,
assert[1],
},
[]interface{}{
bitsType + ".reinterpret/" + exprType,
assert[2],
},
}
default:
check = []interface{}{exprType + ".eq", assert[1], assert[2]}
}
test = []interface{}{
"block",
[]interface{}{
"call",
"$set_result",
check,
},
[]interface{}{"return"},
}
} else {
test = append([]interface{}{"block"}, assert[1:]...)
test = append(test, []interface{}{
"block",
[]interface{}{
"call",
"$set_result",
[]interface{}{"i32.const", "1"},
},
[]interface{}{"return"},
})
}
case "assert_trap":
test = []interface{}{
"block",
assert[1],
[]interface{}{"return"},
}
case "invoke":
n := assert[1].(sexp.Quoted).String()
name, found := exports[n]
if !found {
name = n
}
test = []interface{}{
"block",
append([]interface{}{"call", "$" + name}, assert[2:]...),
[]interface{}{
"call",
"$set_result",
[]interface{}{"i32.const", "-1"},
},
[]interface{}{"return"},
}
default:
testType = ""
}
testTypes[id] = testType
if test != nil {
testFunc = append(testFunc, []interface{}{
"if",
[]interface{}{
"i64.eq",
[]interface{}{"call", "$get_arg"},
[]interface{}{"i64.const", strconv.Itoa(id)},
},
test,
})
}
}
module = append(module, testFunc)
module = append(module, []interface{}{"start", "$test"})
if dumpExps {
fmt.Println(sexp.Stringify(module, true))
}
{
wasmReadCloser := wast2wasm(sexp.Unparse(module), quiet)
defer wasmReadCloser.Close()
wasm := bufio.NewReader(wasmReadCloser)
var timedout bool
p, err := runner.NewProgram(maxTextSize, maxRODataSize)
if err != nil {
t.Fatal(err)
}
defer func() {
if !timedout {
p.Close()
}
}()
var nameSection sections.NameSection
m := Module{
UnknownSectionLoader: sections.UnknownLoaders{
"name": nameSection.Load,
}.Load,
}
m.load(wasm, runner.Env, p.Text, p.ROData, p.RODataAddr(), nil)
p.Seal()
p.SetData(m.Data())
p.SetFunctionMap(m.FunctionMap())
p.SetCallMap(m.CallMap())
minMemorySize, maxMemorySize := m.MemoryLimits()
if dumpText && testing.Verbose() {
dewag.PrintTo(os.Stdout, m.Text(), m.FunctionMap(), &nameSection)
}
if dumpROData {
buf := m.ROData()
for i := 0; len(buf) > 0; i++ {
if len(buf) > 4 {
t.Logf("read-only data #%d*8: 0x%08x 0x%08x", i, binary.LittleEndian.Uint32(buf[:4]), binary.LittleEndian.Uint32(buf[4:8]))
buf = buf[8:]
} else {
t.Logf("read-only data #%d*8: 0x%08x", i, binary.LittleEndian.Uint32(buf[:4]))
buf = buf[4:]
}
}
}
if dumpGlobals {
data, memoryOffset := m.Data()
buf := data[:memoryOffset]
if len(buf) == 0 {
t.Log("no globals")
}
for i := 0; len(buf) > 0; i++ {
t.Logf("global #%d: 0x%016x", i, binary.LittleEndian.Uint64(buf))
buf = buf[8:]
}
}
if dumpMemory {
data, memoryOffset := m.Data()
t.Logf("memory: %#v", data[memoryOffset:])
}
memGrowSize := maxMemorySize
if maxMemorySize > 0 && memGrowSize > maxMemorySize {
memGrowSize = maxMemorySize
}
r, err := p.NewRunner(minMemorySize, memGrowSize, stackSize)
if err != nil {
t.Fatal(err)
}
defer func() {
if !timedout {
r.Close()
}
}()
if realStartName != "" {
var printBuf bytes.Buffer
result, err := r.Run(0, m.Signatures(), &printBuf)
if printBuf.Len() > 0 {
t.Logf("run: module %s: print:\n%s", filename, string(printBuf.Bytes()))
}
if err != nil {
t.Fatal(err)
}
if result != 777 {
t.Fatalf("0x%x", result)
}
t.Logf("run: module %s: start", filename)
}
for id := 0; id < idCount; id++ {
testType := testTypes[id]
if testType == "" {
t.Logf("run: module %s: test #%d: not supported", filename, id)
continue
}
var printBuf bytes.Buffer
var result int32
var panicked interface{}
done := make(chan struct{})
go func() {
defer close(done)
defer func() {
panicked = recover()
}()
result, err = r.Run(int64(id), m.Signatures(), &printBuf)
}()
timer := time.NewTimer(timeout)
select {
case <-done:
timer.Stop()
case <-timer.C:
timedout = true
t.Fatalf("run: module %s: test #%d: timeout", filename, id)
}
if printBuf.Len() > 0 {
t.Logf("run: module %s: test #%d: print output:\n%s", filename, id, string(printBuf.Bytes()))
}
if panicked != nil {
t.Fatalf("run: module %s: test #%d: panic: %v", filename, id, panicked)
}
var stackBuf bytes.Buffer
if err := r.WriteStacktraceTo(&stackBuf, m.FunctionSignatures(), &nameSection); err == nil {
if stackBuf.Len() > 0 {
t.Logf("run: module %s: test #%d: stacktrace:\n%s", filename, id, string(stackBuf.Bytes()))
}
} else {
t.Errorf("run: module %s: test #%d: stacktrace error: %v", filename, id, err)
}
if err != nil {
if _, ok := err.(traps.Id); ok {
if testType == "assert_trap" {
t.Logf("run: module %s: test #%d: pass", filename, id)
} else {
t.Errorf("run: module %s: test #%d: FAIL due to unexpected trap", filename, id)
}
} else {
t.Fatal(err)
}
} else {
if testType == "assert_return" {
switch result {
case 1:
t.Logf("run: module %s: test #%d: pass", filename, id)
case 0:
t.Errorf("run: module %s: test #%d: FAIL", filename, id)
default:
t.Fatalf("run: module %s: test #%d: bad result: 0x%x", filename, id, result)
}
} else if testType == "invoke" {
switch result {
case -1:
t.Logf("run: module %s: test #%d: invoke", filename, id)
default:
t.Fatalf("run: module %s: test #%d: bad result: 0x%x", filename, id, result)
}
} else {
t.Errorf("run: module %s: test #%d: FAIL due to unexpected return (result: 0x%x)", filename, id, result)
}
}
}
}
return data
}
func TestExec(t *testing.T) {
const (
maxTextSize = 65536
maxRODataSize = 4096
stackSize = 4096
dumpText = false
)
data, err := ioutil.ReadFile("testdata/exec.wast")
if err != nil {
t.Fatal(err)
}
wasmReadCloser := wast2wasm(data, false)
defer wasmReadCloser.Close()
wasm := bufio.NewReader(wasmReadCloser)
var m Module
m.loadPreliminarySections(wasm, runner.Env)
var codeBuf bytes.Buffer
if ok, err := sections.CopyCodeSection(&codeBuf, wasm); err != nil {
t.Fatal(err)
} else if !ok {
t.Fatal(ok)
}
// skip name section
if err := sections.DiscardUnknownSections(wasm); err != nil {
t.Fatal(err)
}
minMemorySize, maxMemorySize := m.MemoryLimits()
p, err := runner.NewProgram(maxTextSize, maxRODataSize)
if err != nil {
t.Fatal(err)
}
defer p.Close()
r, err := p.NewRunner(minMemorySize, maxMemorySize, stackSize)
if err != nil {
t.Fatal(err)
}
defer r.Close()
var printBuf bytes.Buffer
e, trigger := r.NewExecutor(m.Signatures(), &printBuf)
m.loadDataSection(wasm)
p.SetData(m.Data())
m.loadCodeSection(&codeBuf, p.Text, p.ROData, p.RODataAddr(), trigger)
p.Seal()
p.SetFunctionMap(m.FunctionMap())
p.SetCallMap(m.CallMap())
if _, err := e.Wait(); err != nil {
t.Fatal(err)
}
if printBuf.Len() > 0 {
t.Logf("print output:\n%s", string(printBuf.Bytes()))
}
if dumpText && testing.Verbose() {
dewag.PrintTo(os.Stdout, m.Text(), m.FunctionMap(), nil)
}
}
func TestSnapshot(t *testing.T) {
const (
maxTextSize = 65536
maxRODataSize = 4096
stackSize = 4096
dumpText = false
)
data, err := ioutil.ReadFile("testdata/snapshot.wast")
if err != nil {
t.Fatal(err)
}
wasmReadCloser := wast2wasm(data, false)
defer wasmReadCloser.Close()
wasm := bufio.NewReader(wasmReadCloser)
p, err := runner.NewProgram(maxTextSize, maxRODataSize)
if err != nil {
t.Fatal(err)
}
defer p.Close()
var m Module
m.load(wasm, runner.Env, p.Text, p.ROData, p.RODataAddr(), nil)
p.Seal()
p.SetData(m.Data())
p.SetFunctionMap(m.FunctionMap())
p.SetCallMap(m.CallMap())
minMemorySize, maxMemorySize := m.MemoryLimits()
if dumpText && testing.Verbose() {
dewag.PrintTo(os.Stdout, m.Text(), m.FunctionMap(), nil)
}
var printBuf bytes.Buffer
r1, err := p.NewRunner(minMemorySize, maxMemorySize, stackSize)
if err != nil {
t.Fatal(err)
}
_, err = r1.Run(0, m.Signatures(), &printBuf)
r1.Close()
if printBuf.Len() > 0 {
t.Logf("print output:\n%s", string(printBuf.Bytes()))
}
if len(r1.Snapshots) != 1 {
t.Fatal(r1.Snapshots)
}
s := r1.Snapshots[0]
t.Log("resuming")
printBuf.Reset()
r2, err := s.NewRunner(maxMemorySize, stackSize)
if err != nil {
t.Fatal(err)
}
_, err = r2.Run(0, m.Signatures(), &printBuf)
r2.Close()
if printBuf.Len() > 0 {
t.Logf("print output:\n%s", string(printBuf.Bytes()))
}
if len(r2.Snapshots) != 0 {
t.Fatal(r2.Snapshots)
}
}