v8.run/go/exp@v0.0.26-0.20230226010534-afcdbd3f782d/fastrand/u64_test.go

package fastrand

import "testing"

func TestRNG_Int63(t *testing.T) {
	t.Run("isNegative", func(t *testing.T) {
		rng := AcquireRNG()
		defer ReleaseRNG(rng)
		for i := 0; i < 100000; i++ {
			if rng.Int63() < 0 {
				t.Errorf("rng.Int63() < 0")
			}
		}
	})
}

func Test_Int63n(t *testing.T) {
	rng := AcquireRNG()
	defer ReleaseRNG(rng)
	rng.SetSeed(42)
	for i := 0; i < 100000; i++ {
		if rng.Int63n(10) < 0 {
			t.Errorf("rng.Int63n(10) < 0")
		}
		if rng.Int63n(100) < 0 {
			t.Errorf("rng.Int63n(100) < 0")
		}
	}
}

func BenchmarkRNGUint64(b *testing.B) {
	b.RunParallel(func(p *testing.PB) {
		rng := AcquireRNG()
		for p.Next() {
			_ = rng.Uint64()
		}
		ReleaseRNG(rng)
	})
}

func BenchmarkRNGUint64n(b *testing.B) {
	b.RunParallel(func(p *testing.PB) {
		rng := AcquireRNG()
		for p.Next() {
			_ = rng.Uint64n(1)
		}
		ReleaseRNG(rng)
	})
}

func BenchmarkRNGInt63(b *testing.B) {
	b.RunParallel(func(p *testing.PB) {
		rng := AcquireRNG()
		for p.Next() {
			_ = rng.Int63()
		}
		ReleaseRNG(rng)
	})
}

func BenchmarkRNGInt63n(b *testing.B) {
	b.RunParallel(func(p *testing.PB) {
		rng := AcquireRNG()
		for p.Next() {
			_ = rng.Int63n(1)
		}
		ReleaseRNG(rng)
	})
}

func BenchmarkRNGInt64(b *testing.B) {
	b.RunParallel(func(p *testing.PB) {
		rng := AcquireRNG()
		for p.Next() {
			_ = rng.Int64()
		}
		ReleaseRNG(rng)
	})
}

func BenchmarkUint64(b *testing.B) {
	b.RunParallel(func(p *testing.PB) {
		for p.Next() {
			_ = Uint64()
		}
	})
}

func BenchmarkUint64n(b *testing.B) {
	b.RunParallel(func(p *testing.PB) {
		for p.Next() {
			_ = Uint64n(100)
		}
	})
}