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util_test.go
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util_test.go
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package w3_test
import (
"bytes"
"fmt"
"math/big"
"strconv"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/lmittmann/w3"
)
func ExampleI() {
fmt.Printf("%v wei\n", w3.I("0x1111d67bb1bb0000"))
fmt.Printf("%v wei\n", w3.I("1230000000000000000"))
fmt.Printf("%v wei\n", w3.I("1.23 ether"))
fmt.Printf("%v wei\n", w3.I("1.23 gwei"))
// Output:
// 1230000000000000000 wei
// 1230000000000000000 wei
// 1230000000000000000 wei
// 1230000000 wei
}
func ExampleFromWei() {
wei := big.NewInt(1_230000000_000000000)
fmt.Printf("%s Ether\n", w3.FromWei(wei, 18))
// Output:
// 1.23 Ether
}
func TestA(t *testing.T) {
tests := []struct {
HexAddress string
WantPanic string
WantAddress common.Address
}{
{
HexAddress: "0x000000000000000000000000000000000000c0Fe",
WantAddress: common.HexToAddress("0x000000000000000000000000000000000000c0Fe"),
},
{
HexAddress: "000000000000000000000000000000000000c0Fe",
WantAddress: common.HexToAddress("0x000000000000000000000000000000000000c0Fe"),
},
{HexAddress: "0xcofe", WantPanic: `invalid address "cofe": encoding/hex: invalid byte: U+006F 'o'`},
{HexAddress: "0xc0Fe", WantPanic: `invalid address "c0Fe": must have 20 bytes`},
}
for i, test := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
defer func() {
var gotPanic string
if r := recover(); r != nil {
gotPanic = r.(string)
}
if test.WantPanic != gotPanic {
t.Fatalf("want %q, got %q", test.WantPanic, gotPanic)
}
}()
gotAddr := w3.A(test.HexAddress)
if test.WantPanic == "" && test.WantAddress != gotAddr {
t.Fatalf("want: %s, got: %s", test.WantAddress, gotAddr)
}
})
}
}
func TestB(t *testing.T) {
tests := []struct {
HexBytes string
WantPanic string
WantBytes []byte
}{
{HexBytes: "0xc0fe", WantBytes: []byte{0xc0, 0xfe}},
{HexBytes: "c0fe", WantBytes: []byte{0xc0, 0xfe}},
{HexBytes: "0xcofe", WantPanic: `invalid bytes "cofe": encoding/hex: invalid byte: U+006F 'o'`},
{HexBytes: "0xc0f", WantPanic: `invalid bytes "c0f": encoding/hex: odd length hex string`},
}
for i, test := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
defer func() {
var gotPanic string
if r := recover(); r != nil {
gotPanic = r.(string)
}
if test.WantPanic != gotPanic {
t.Fatalf("want %q, got %q", test.WantPanic, gotPanic)
}
}()
gotBytes := w3.B(test.HexBytes)
if test.WantPanic == "" && !bytes.Equal(test.WantBytes, gotBytes) {
t.Fatalf("want: %x, got: %x", test.WantBytes, gotBytes)
}
})
}
}
func TestH(t *testing.T) {
tests := []struct {
HexHash string
WantPanic string
WantHash common.Hash
}{
{
HexHash: "0x000000000000000000000000000000000000000000000000000000000000c0fe",
WantHash: common.HexToHash("0x000000000000000000000000000000000000000000000000000000000000c0fe"),
},
{
HexHash: "000000000000000000000000000000000000000000000000000000000000c0fe",
WantHash: common.HexToHash("0x000000000000000000000000000000000000000000000000000000000000c0fe"),
},
{HexHash: "0xcofe", WantPanic: `invalid hash "cofe": encoding/hex: invalid byte: U+006F 'o'`},
{HexHash: "0xc0fe", WantPanic: `invalid hash "c0fe": must have 32 bytes`},
}
for i, test := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
defer func() {
var gotPanic string
if r := recover(); r != nil {
gotPanic = r.(string)
}
if test.WantPanic != gotPanic {
t.Fatalf("want %q, got %q", test.WantPanic, gotPanic)
}
}()
gotHash := w3.H(test.HexHash)
if test.WantPanic == "" && test.WantHash != gotHash {
t.Fatalf("want: %s, got: %s", test.WantHash, gotHash)
}
})
}
}
func TestI(t *testing.T) {
tests := []struct {
StrInt string
WantPanic string
WantBig *big.Int
}{
// hex big's
{StrInt: "0x0", WantBig: big.NewInt(0)},
{StrInt: "0x1", WantBig: big.NewInt(1)},
{StrInt: "0xff", WantBig: big.NewInt(255)},
{StrInt: "0xO", WantPanic: `invalid hex big "0xO"`},
// int big's
{StrInt: "0", WantBig: big.NewInt(0)},
{StrInt: "1", WantBig: big.NewInt(1)},
{StrInt: "255", WantBig: big.NewInt(255)},
{StrInt: "X", WantPanic: `str big "X" must be number`},
{StrInt: "888916043834286157872", WantBig: strBig("888916043834286157872")},
// unit big's
{StrInt: "0 ether", WantBig: big.NewInt(0)},
{StrInt: "0 eth", WantBig: big.NewInt(0)},
{StrInt: "0 gwei", WantBig: big.NewInt(0)},
{StrInt: "1 ether", WantBig: big.NewInt(1_000000000_000000000)},
{StrInt: "1 eth", WantBig: big.NewInt(1_000000000_000000000)},
{StrInt: "1ether", WantPanic: `str big "1ether" must be number`},
{StrInt: "1.2 ether", WantBig: big.NewInt(1_200000000_000000000)},
{StrInt: "01.2 ether", WantBig: big.NewInt(1_200000000_000000000)},
{StrInt: "1.20 ether", WantBig: big.NewInt(1_200000000_000000000)},
{StrInt: "1.200000000000000003 ether", WantBig: big.NewInt(1_200000000_000000003)},
{StrInt: "1.2000000000000000034 ether", WantPanic: `str big "1.2000000000000000034 ether" exceeds precision`},
{StrInt: "1 gwei", WantBig: big.NewInt(1_000000000)},
{StrInt: "1.2 gwei", WantBig: big.NewInt(1_200000000)},
{StrInt: "1.200000003 gwei", WantBig: big.NewInt(1_200000003)},
{StrInt: "1.2000000034 gwei", WantPanic: `str big "1.2000000034 gwei" exceeds precision`},
{StrInt: ".", WantPanic: `str big "." must be number`},
{StrInt: ". ether", WantPanic: `str big ". ether" must be number`},
{StrInt: "1.", WantPanic: `str big "1." without unit must be integer`},
{StrInt: "1. ether", WantPanic: `str big "1. ether" must be number`},
{StrInt: ".1", WantPanic: `str big ".1" must be number`},
{StrInt: ".1 ether", WantPanic: `str big ".1 ether" must be number`},
{StrInt: "0.1 ether", WantBig: big.NewInt(100000000_000000000)},
{StrInt: "0.10 ether", WantBig: big.NewInt(100000000_000000000)},
{StrInt: "00.10 ether", WantBig: big.NewInt(100000000_000000000)},
{StrInt: " 1 ether", WantPanic: `str big " 1 ether" must be number`},
{StrInt: "1 ether ", WantPanic: `str big "1 ether " has invalid unit "ether "`},
{StrInt: "1 ether", WantPanic: `str big "1 ether" has invalid unit " ether"`},
{StrInt: "-1", WantBig: big.NewInt(-1)},
}
for i, test := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
defer func() {
var gotPanic string
if r := recover(); r != nil {
gotPanic = r.(string)
}
if test.WantPanic != gotPanic {
t.Fatalf("want %q, got %q", test.WantPanic, gotPanic)
}
}()
gotBig := w3.I(test.StrInt)
if test.WantPanic == "" && test.WantBig.Cmp(gotBig) != 0 {
t.Fatalf("want %v, got %v", test.WantBig, gotBig)
}
})
}
}
func strBig(s string) *big.Int {
big, _ := new(big.Int).SetString(s, 10)
return big
}
func FuzzI(f *testing.F) {
f.Add([]byte{0x2a})
f.Fuzz(func(t *testing.T, b []byte) {
wantBig := new(big.Int).SetBytes(b)
bigStr := wantBig.String()
if gotBig := w3.I(bigStr); wantBig.Cmp(gotBig) != 0 {
t.Fatalf("want %v, got %v", wantBig, gotBig)
}
bigHexstr := wantBig.Text(16)
if gotBig := w3.I("0x" + bigHexstr); wantBig.Cmp(gotBig) != 0 {
t.Fatalf("want %v, got %v", wantBig, gotBig)
}
})
}
func BenchmarkI(b *testing.B) {
benchmarks := []string{
"0x123456",
"1.23456 ether",
"1.000000000000000000 ether",
"1.000000000000000000123456 ether",
}
for _, bench := range benchmarks {
b.Run(bench, func(b *testing.B) {
b.ReportAllocs()
for range b.N {
w3.I(bench)
}
})
}
}
func TestFromWei(t *testing.T) {
tests := []struct {
Wei *big.Int
Decimals uint8
Want string
}{
{nil, 0, "<nil>"},
{big.NewInt(0), 0, "0"},
{big.NewInt(1), 0, "1"},
{big.NewInt(0), 18, "0"},
{big.NewInt(1), 18, "0.000000000000000001"},
{big.NewInt(1000), 18, "0.000000000000001"},
{big.NewInt(1000000), 18, "0.000000000001"},
{big.NewInt(1000000000), 18, "0.000000001"},
{big.NewInt(1000000000000), 18, "0.000001"},
{big.NewInt(1000000000000000), 18, "0.001"},
{big.NewInt(1000000000000000000), 18, "1"},
{big.NewInt(-1), 18, "-0.000000000000000001"},
{big.NewInt(-1000), 18, "-0.000000000000001"},
{big.NewInt(-1000000), 18, "-0.000000000001"},
{big.NewInt(-1000000000), 18, "-0.000000001"},
{big.NewInt(-1000000000000), 18, "-0.000001"},
{big.NewInt(-1000000000000000), 18, "-0.001"},
{big.NewInt(-1000000000000000000), 18, "-1"},
{big.NewInt(1000000000000000000), 15, "1000"},
{big.NewInt(1000000000000000000), 12, "1000000"},
{big.NewInt(1000000000000000000), 9, "1000000000"},
{big.NewInt(1000000000000000000), 6, "1000000000000"},
{big.NewInt(1000000000000000000), 3, "1000000000000000"},
{big.NewInt(1000000000000000000), 0, "1000000000000000000"},
}
for i, test := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
got := w3.FromWei(test.Wei, test.Decimals)
if got != test.Want {
t.Fatalf("%q != %q", got, test.Want)
}
})
}
}