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utils_test.go
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package util
import (
"math/big"
"testing"
"github.com/stretchr/testify/assert"
)
func TestUtils(t *testing.T) {
assert.Equal(t, int32(1), Min(int32(1), 1))
assert.Equal(t, int32(1), Min(int32(1), 2))
assert.Equal(t, int32(1), Min(2, int32(1)))
assert.Equal(t, int32(2), Max(int32(2), 2))
assert.Equal(t, int32(2), Max(1, int32(2)))
assert.Equal(t, int32(2), Max(int32(2), 1))
assert.Equal(t, uint32(1), Min(uint32(1), 1))
assert.Equal(t, uint32(1), Min(uint32(1), 2))
assert.Equal(t, uint32(1), Min(2, uint32(1)))
assert.Equal(t, uint32(2), Max(uint32(2), 2))
assert.Equal(t, uint32(2), Max(1, uint32(2)))
assert.Equal(t, uint32(2), Max(uint32(2), 1))
assert.Equal(t, MaxUint32, uint32(0xffffffff))
assert.Equal(t, MaxUint64, uint64(0xffffffffffffffff))
assert.Equal(t, MaxInt32, int32(0x7fffffff))
assert.Equal(t, MaxInt64, int64(0x7fffffffffffffff))
assert.Equal(t, MaxInt64, Max(MaxInt64, 1))
assert.Equal(t, MaxInt64, Max(MinInt64, MaxInt64))
assert.Equal(t, int64(1), Min(MaxInt64, 1))
assert.Equal(t, MinInt64, Min(MinInt64, MaxInt64))
}
func TestSetFlags(t *testing.T) {
flags := 0
flags = SetFlag(flags, 0x2)
flags = SetFlag(flags, 0x8)
assert.Equal(t, flags, 0xa)
assert.True(t, IsFlagSet(flags, 0x2))
assert.False(t, IsFlagSet(flags, 0x4))
flags = UnsetFlag(flags, 0x2)
assert.False(t, IsFlagSet(flags, 0x2))
assert.Equal(t, flags, 0x8)
}
func TestRandUint16(t *testing.T) {
rnd := RandUint16(4)
assert.GreaterOrEqual(t, rnd, uint16(0))
assert.LessOrEqual(t, rnd, uint16(4))
}
func TestRandInt16(t *testing.T) {
rnd := RandInt16(4)
assert.GreaterOrEqual(t, rnd, int16(0))
assert.LessOrEqual(t, rnd, int16(4))
}
func TestRandUint32(t *testing.T) {
rnd := RandUint32(4)
assert.GreaterOrEqual(t, rnd, uint32(0))
assert.LessOrEqual(t, rnd, uint32(4))
}
func TestRandInt32(t *testing.T) {
rnd := RandInt32(4)
assert.GreaterOrEqual(t, rnd, int32(0))
assert.LessOrEqual(t, rnd, int32(4))
}
func TestRandInt64(t *testing.T) {
rnd := RandInt64(4)
assert.GreaterOrEqual(t, rnd, int64(0))
assert.LessOrEqual(t, rnd, int64(4))
}
func TestRandUint64(t *testing.T) {
rnd1 := RandUint64(4)
assert.GreaterOrEqual(t, rnd1, uint64(0))
assert.LessOrEqual(t, rnd1, uint64(4))
rnd2 := RandUint64(0)
assert.NotZero(t, rnd2)
}
func TestI2OSP(t *testing.T) {
assert.Nil(t, I2OSP(big.NewInt(int64(-1)), 2))
assert.Equal(t, []byte{0, 0}, I2OSP(big.NewInt(int64(0)), 2))
assert.Equal(t, []byte{0, 1}, I2OSP(big.NewInt(int64(1)), 2))
assert.Equal(t, []byte{0, 255}, I2OSP(big.NewInt(int64(255)), 2))
assert.Equal(t, []byte{1, 0}, I2OSP(big.NewInt(int64(256)), 2))
assert.Equal(t, []byte{255, 255}, I2OSP(big.NewInt(int64(65535)), 2))
}
func TestIS2OP(t *testing.T) {
assert.Equal(t, int64(0), OS2IP([]byte{0, 0}).Int64())
assert.Equal(t, int64(1), OS2IP([]byte{0, 1}).Int64())
assert.Equal(t, int64(255), OS2IP([]byte{0, 255}).Int64())
assert.Equal(t, int64(256), OS2IP([]byte{1, 0}).Int64())
assert.Equal(t, int64(65535), OS2IP([]byte{255, 255}).Int64())
}
func TestLogScale(t *testing.T) {
tests := []struct {
input int
expected int
}{
{1, 1},
{2, 2},
{3, 4},
{7, 8},
{8, 8},
}
for _, tt := range tests {
result := LogScale(tt.input)
assert.Equal(t, tt.expected, result, "LogScale(%d) failed", tt.input)
}
}
func TestFormatBytesToHumanReadable(t *testing.T) {
tests := []struct {
bytes uint64
expected string
}{
{1048576, "1.00 MB"},
{3145728, "3.00 MB"},
{1024, "1.00 KB"},
{512, "512.00 Bytes"},
{1_073_741_824, "1.00 GB"},
{1_099_511_627_776, "1.00 TB"},
}
for _, tt := range tests {
result := FormatBytesToHumanReadable(tt.bytes)
if result != tt.expected {
t.Errorf("FormatBytesToHumanReadable(%d) returned %s, expected %s", tt.bytes, result, tt.expected)
}
}
}