ntool/nmath/util_test.go

package nmath_test

import (
	"git.noahlan.cn/noahlan/ntool/nmath"
	"git.noahlan.cn/noahlan/ntool/ntest/assert"
	"testing"
)

func TestMaxFloat(t *testing.T) {
	assert.Eq(t, float64(3), nmath.MaxFloat(2, 3))
	assert.Eq(t, 3.3, nmath.MaxFloat(2.1, 3.3))

	assert.Eq(t, 3.3, nmath.Max(2.1, 3.3))
	assert.Eq(t, 3.3, nmath.Max(3.3, 2.1))

	assert.Eq(t, 2.1, nmath.Min(2.1, 3.3))
	assert.Eq(t, 2.1, nmath.Min(3.3, 2.1))
}

func TestMaxI64(t *testing.T) {
	assert.Eq(t, 3, nmath.MaxInt(2, 3))
	assert.Eq(t, 3, nmath.MaxInt(3, 2))

	assert.Eq(t, int64(3), nmath.MaxI64(2, 3))
	assert.Eq(t, int64(3), nmath.MaxI64(3, 2))

	assert.Eq(t, 3, nmath.Max[int](3, 2))
	assert.Eq(t, int64(3), nmath.Max[int64](3, 2))
	assert.Eq(t, int64(3), nmath.Max(int64(3), int64(2)))
}

func TestSwapMaxInt(t *testing.T) {
	x, y := nmath.SwapMax(2, 34)
	assert.Eq(t, 34, x)
	assert.Eq(t, 2, y)

	x, y = nmath.SwapMax(34, 2)
	assert.Eq(t, 34, x)
	assert.Eq(t, 2, y)

	x, y = nmath.SwapMin(2, 34)
	assert.Eq(t, 2, x)
	assert.Eq(t, 34, y)

	x, y = nmath.SwapMin(34, 2)
	assert.Eq(t, 2, x)
	assert.Eq(t, 34, y)

	x, y = nmath.SwapMaxInt(2, 34)
	assert.Eq(t, 34, x)
	assert.Eq(t, 2, y)

	x64, y64 := nmath.SwapMaxI64(2, 34)
	assert.Eq(t, int64(34), x64)
	assert.Eq(t, int64(2), y64)
}

func TestOrElse(t *testing.T) {
	assert.Eq(t, 23, nmath.OrElse(23, 21))
	assert.Eq(t, 21.3, nmath.OrElse[float64](0, 21.3))
}