46 lines
719 B
Go
46 lines
719 B
Go
package randomizer
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import (
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"fmt"
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"math/rand"
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)
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type Random interface {
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Int() int
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}
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func init() {}
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type rndGenerator func(n int) int
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type Randomizer struct {
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fn rndGenerator
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}
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func NewRandomizer(fn rndGenerator) *Randomizer {
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return &Randomizer{fn: fn}
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}
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func (r *Randomizer) Int(n int) int {
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return r.fn(n)
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}
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func Rand(rand int) int {
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return randGen(rand)
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}
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func realRand(n int) int { return int(rand.Intn(n)) }
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func fakeRand(n int) func(numb int) int {
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return func(numb int) int {
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if n >= numb {
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panic(fmt.Sprintf("%d Should not be superior of %d", n, numb))
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}
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return n
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}
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}
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var randGen = NewRandomizer(realRand).Int
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func FakeRandomizer(n int) {
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randGen = NewRandomizer(fakeRand(n)).Int
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}
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