403 lines
8.3 KiB
Go
403 lines
8.3 KiB
Go
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// Copyright 2017 The go-interpreter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package exec_test
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import (
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"encoding/json"
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"fmt"
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"math"
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"math/big"
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"os"
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"path/filepath"
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"reflect"
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"regexp"
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"strconv"
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"strings"
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"testing"
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"github.com/go-interpreter/wagon/exec"
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"github.com/go-interpreter/wagon/validate"
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"github.com/go-interpreter/wagon/wasm"
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)
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const (
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nonSpecTestsDir = "./testdata"
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specTestsDir = "./testdata/spec"
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)
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type testCase struct {
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Function string `json:"function"`
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Args []string `json:"args"`
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Return string `json:"return"`
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Trap string `json:"trap"`
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RecoverPanic bool `json:"recoverpanic,omitempty"`
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ErrorMsg string `json:"errormsg"`
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}
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type file struct {
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FileName string `json:"file"`
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Tests []testCase `json:"tests"`
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}
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var reValue = regexp.MustCompile(`(.+)\:(.+)`)
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func parseFloat(str string, bitSize int) float64 {
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hexFloat, err := regexp.MatchString("0x", str)
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if err != nil {
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panic(err)
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}
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isNanOrInf, err := regexp.MatchString("(nan|inf)", str)
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if err != nil {
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panic(err)
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}
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if isNanOrInf {
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if strings.HasPrefix(str, "-") {
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str = strings.TrimPrefix(str, "-")
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if str == "inf" {
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return math.Inf(-1)
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} else if str == "nan" {
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return math.NaN()
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}
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}
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if str == "inf" {
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return math.Inf(+1)
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} else if str == "nan" {
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return math.NaN()
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}
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}
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if hexFloat {
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if strings.HasPrefix(str, "-0x") {
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str = strings.TrimPrefix(str, "-0x")
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if str == "inf" {
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return math.Inf(-1)
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}
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str = "-" + str
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} else {
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if str == "inf" {
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return math.Inf(+1)
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} else if str == "nan" {
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return math.NaN()
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}
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str = strings.TrimPrefix(str, "0x")
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}
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f, _, err := big.ParseFloat(str, 16, big.MaxPrec, big.ToNearestEven)
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if err != nil {
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panic(err)
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}
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n, _ := f.Float64()
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return n
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}
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n, err := strconv.ParseFloat(str, bitSize)
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if err != nil {
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panic(err)
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}
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return n
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}
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func TestParseFloat(t *testing.T) {
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tests := []struct {
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str string
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want float64
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}{
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{"0xf32", 3890.0},
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{"3.4", 3.4},
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{"0.0", 0.0},
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{"-123.0", -123.0},
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{"0x1.fffffep+127", 340282346638528859811704183484516925440.0},
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{"nan", math.NaN()},
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{"inf", math.Inf(+1)},
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{"-inf", math.Inf(-1)},
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}
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for _, test := range tests {
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f := parseFloat(test.str, 64)
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if f != test.want && !(math.IsNaN(test.want) && math.IsNaN(f)) {
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t.Errorf("unexpected value returned by parseFloat: got=%f want=%f", f, test.want)
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}
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}
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}
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func parseInt(str string, bitSize int) uint64 {
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isHex, _ := regexp.MatchString("0x", str)
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base := 10
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if isHex {
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if strings.HasPrefix(str, "-") {
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str = strings.TrimPrefix(str, "-0x")
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str = "-" + str
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} else {
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str = strings.TrimPrefix(str, "0x")
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}
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base = 16
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}
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n, err := strconv.ParseUint(str, base, bitSize)
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if err != nil {
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// try parsing as an int
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n2, err := strconv.ParseInt(str, base, bitSize)
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if err != nil {
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panic(err)
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}
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n = uint64(n2)
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}
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return n
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}
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func TestParseInt(t *testing.T) {
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tests := []struct {
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str string
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want uint64
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}{
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{"45", 45},
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{"0", 0},
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{"0xABADCAFEDEAD1DEA", 0xABADCAFEDEAD1DEA},
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{"-1", 18446744073709551615},
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}
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for _, test := range tests {
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i := parseInt(test.str, 64)
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if i != test.want {
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t.Errorf("unexpected value returned by parseInt: got=%d want=%d", i, test.want)
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}
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}
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}
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func parseValue(str string) interface{} {
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if str == "" {
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return nil
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}
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matches := reValue.FindStringSubmatch(str)
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if matches == nil {
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panic("Invalid value expression: " + str)
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}
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switch matches[1] {
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case "i32":
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n := parseInt(matches[2], 32)
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return uint32(n)
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case "i64":
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n := parseInt(matches[2], 64)
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return n
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case "f32":
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return float32(parseFloat(matches[2], 32))
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case "f64":
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return parseFloat(matches[2], 64)
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default:
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panic("invalid value_type prefix " + matches[1])
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}
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}
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func TestParseValue(t *testing.T) {
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tests := []struct {
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str string
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want interface{}
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}{
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{"i64:45", uint64(45)},
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{"f32:0.0", float32(0)},
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{"f64:0x1.fffffep+127", float64(340282346638528859811704183484516925440.0)},
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{"f64:inf", float64(math.Inf(+1))},
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{"f32:inf", float32(math.Inf(+1))},
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}
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for _, test := range tests {
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v := parseValue(test.str)
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if !reflect.DeepEqual(test.want, v) {
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t.Errorf("unexpected value returned by parseInt: got=%v want=%v", v, test.want)
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}
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}
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}
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func parseArgs(args []string) (arr []uint64) {
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for _, str := range args {
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v := parseValue(str)
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var n uint64
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switch v.(type) {
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case uint64:
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n = v.(uint64)
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case uint32:
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n = uint64(v.(uint32))
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case float32:
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n = uint64(math.Float32bits(v.(float32)))
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case float64:
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n = math.Float64bits(v.(float64))
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default:
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panic(fmt.Sprintf("invalid value type: %v(%v)", reflect.TypeOf(v), v))
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}
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arr = append(arr, n)
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}
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return arr
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}
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func fnString(fn string, args []string) string {
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if len(args) == 0 {
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return fn
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}
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return fmt.Sprintf("%s(%v)", fn, args)
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}
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func panics(fn func()) (panicked bool, msg string) {
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defer func() {
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r := recover()
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panicked = r != nil
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msg = fmt.Sprint(r)
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}()
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fn()
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return
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}
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func runTest(fileName string, testCases []testCase, t testing.TB) {
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file, err := os.Open(fileName)
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if err != nil {
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t.Fatal(err)
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}
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defer file.Close()
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module, err := wasm.ReadModule(file, nil)
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if err != nil {
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t.Fatal(err)
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}
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if err = validate.VerifyModule(module); err != nil {
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t.Fatalf("%s: %v", fileName, err)
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}
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vm, err := exec.NewVM(module)
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if err != nil {
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t.Fatalf("%s: %v", fileName, err)
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}
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b, ok := t.(*testing.B)
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for _, testCase := range testCases {
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var expected interface{}
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index := module.Export.Entries[testCase.Function].Index
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args := parseArgs(testCase.Args)
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if testCase.Return != "" {
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expected = parseValue(testCase.Return)
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}
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if testCase.Trap != "" {
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// don't benchmark tests that involve trapping the VM
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fn := func() {
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_, err := vm.ExecCode(int64(index), args...)
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if err != nil {
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t.Fatalf("%s, %s: %v", fileName, testCase.Function, err)
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}
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}
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if p, msg := panics(fn); p && msg != testCase.Trap {
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t.Errorf("%s, %s: unexpected trap message: got=%s, want=%s", fileName, fnString(testCase.Function, testCase.Args), msg, testCase.Trap)
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}
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continue
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}
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vm.RecoverPanic = (testCase.RecoverPanic == true)
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times := 1
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if ok {
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times = b.N
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b.ResetTimer()
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}
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var res interface{}
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var err error
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for i := 0; i < times; i++ {
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res, err = vm.ExecCode(int64(index), args...)
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}
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if ok {
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b.StopTimer()
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}
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if err != nil && err.Error() != testCase.ErrorMsg {
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t.Fatalf("%s, %s: %v", fileName, testCase.Function, err)
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}
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nanEq := false
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if reflect.TypeOf(res) == reflect.TypeOf(expected) {
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switch v := expected.(type) {
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case float32:
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nanEq = math.IsNaN(float64(v)) && math.IsNaN(float64(res.(float32)))
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case float64:
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nanEq = math.IsNaN(v) && math.IsNaN(res.(float64))
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}
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}
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if nanEq {
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continue
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}
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if !reflect.DeepEqual(res, expected) {
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t.Fatalf("%s, %s (%d): unexpected return value: got=%v(%v), want=%v(%v) (%s)", fileName, fnString(testCase.Function, testCase.Args), index, reflect.TypeOf(res), res, reflect.TypeOf(expected), expected, testCase.Return)
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}
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}
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}
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func testModules(t *testing.T, dir string) {
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files := []file{}
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file, err := os.Open(filepath.Join(dir, "modules.json"))
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if err != nil {
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t.Fatal(err)
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}
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defer file.Close()
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err = json.NewDecoder(file).Decode(&files)
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if err != nil {
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t.Fatal(err)
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}
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for _, file := range files {
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fileName := filepath.Join(dir, file.FileName)
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testCases := file.Tests
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t.Run(fileName, func(t *testing.T) {
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t.Parallel()
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path, err := filepath.Abs(fileName)
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if err != nil {
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t.Fatal(err)
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}
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runTest(path, testCases, t)
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})
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}
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}
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func BenchmarkModules(b *testing.B) {
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files := []file{}
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file, err := os.Open(filepath.Join("testdata/spec", "modules.json"))
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if err != nil {
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b.Fatal(err)
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}
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defer file.Close()
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err = json.NewDecoder(file).Decode(&files)
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if err != nil {
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b.Fatal(err)
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}
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for _, file := range files {
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fileName := filepath.Join("testdata/spec", file.FileName)
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testCases := file.Tests
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b.Run(fileName, func(b *testing.B) {
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path, err := filepath.Abs(fileName)
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if err != nil {
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b.Fatal(err)
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}
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runTest(path, testCases, b)
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})
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}
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}
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func TestNonSpec(t *testing.T) {
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testModules(t, nonSpecTestsDir)
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}
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func TestSpec(t *testing.T) {
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testModules(t, specTestsDir)
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}
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