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go_test.go
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go_test.go
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package lua
// Test assumptions about how Go works
import (
"math"
"strconv"
"testing"
"unicode"
)
func TestStringCompare(t *testing.T) {
s1 := "hello\x00world"
s2 := "hello\x00sweet"
if s1 <= s2 {
t.Error("s1 <= s2")
}
}
func TestStringLength(t *testing.T) {
s := "hello\x00world"
if len(s) != 11 {
t.Error("go doesn't count embedded nulls in string length")
}
}
func TestIsControl(t *testing.T) {
t.Skip()
for i := 0; i < 256; i++ {
control := i < 0x20 || i == 0x7f
if lib := unicode.Is(unicode.Cc, rune(i)); control != lib {
t.Errorf("%x: is control? %s", i, lib)
}
}
}
func TestReslicing(t *testing.T) {
a := [5]int{0, 1, 2, 3, 4}
s := a[:0]
if cap(s) != cap(a) {
t.Error("cap(s) != cap(a)")
}
if len(s) != 0 {
t.Error("len(s) != 0")
}
s = a[1:3]
if cap(s) == len(s) {
t.Error("cap(s) == len(s)")
}
s = s[:cap(s)]
if cap(s) != len(s) {
t.Error("cap(s) != len(s)")
}
}
func TestPow(t *testing.T) {
// if a, b := math.Pow(10.0, 33.0), 1.0e33; a != b {
// t.Errorf("%v != %v\n", a, b)
// }
if a, b := math.Pow10(33), 1.0e33; a != b {
t.Errorf("%v != %v\n", a, b)
}
}
func TestZero(t *testing.T) {
if 0.0 != -0.0 {
t.Error("0.0 == -0.0")
}
}
func TestParseFloat(t *testing.T) {
if f, err := strconv.ParseFloat("inf", 64); err != nil {
t.Error("ParseFloat('inf', 64) == ", f, err)
}
}
func TestUnsigned(t *testing.T) {
n := -1.0
const supUnsigned = float64(^uint32(0)) + 1
if x := math.Floor(n / supUnsigned); x != -1.0 {
t.Error("math.Floor(-1/supUnsigned) == ", x)
}
if x := math.Floor(n/supUnsigned) * supUnsigned; x != -4294967296.0 {
t.Error("math.Floor(n/supUnsigned)*supUnsigned == ", x)
}
if x := n - math.Floor(n/supUnsigned)*supUnsigned; x != 4294967295.0 {
t.Error("n-math.Floor(n/supUnsigned)*supUnsigned == ", x)
}
if x := uint(n - math.Floor(n/supUnsigned)*supUnsigned); x != 4294967295 {
t.Error("uint(n-math.Floor(n/supUnsigned)*supUnsigned) == ", x)
}
}