Minetest-WorldEditAdditions/.tests/Vector3/multiply.test.lua

local Vector3 = require("worldeditadditions.utils.vector3")

describe("Vector3.multiply", function()
	it("should multiply 2 positive vectors", function()
		local a = Vector3.new(3, 4, 5)
		local b = Vector3.new(2, 2, 2)
		assert.are.same(
			Vector3.new(6, 8, 10),
			a:multiply(b)
		)
	end)
	it("should work with the mul alias", function()
		local a = Vector3.new(3, 4, 5)
		local b = Vector3.new(2, 2, 2)
		assert.are.same(
			Vector3.new(6, 8, 10),
			a:mul(b)
		)
	end)
	it("should work with scalar a", function()
		local a = 2
		local b = Vector3.new(6, 7, 8)
		assert.are.same(
			Vector3.new(12, 14, 16),
			a * b
		)
	end)
	it("should work with scalar b", function()
		local a = Vector3.new(6, 7, 8)
		local b = 2
		assert.are.same(
			Vector3.new(12, 14, 16),
			a * b
		)
	end)
	it("should support the multiply operator", function()
		local a = Vector3.new(3, 4, 5)
		local b = Vector3.new(2, 2, 2)
		assert.are.same(
			Vector3.new(6, 8, 10),
			a * b
		)
	end)
	it("should handle negative b", function()
		local a = Vector3.new(3, 4, 5)
		local b = Vector3.new(-1, -1, -1)
		assert.are.same(
			Vector3.new(-3, -4, -5),
			a * b
		)
	end)
	it("should handle negative a", function()
		local a = Vector3.new(-3, -4, -5)
		local b = Vector3.new(2, 2, 2)
		assert.are.same(
			Vector3.new(-6, -8, -10),
			a * b
		)
	end)
	it("should handle negative a and b", function()
		local a = Vector3.new(-3, -4, -5)
		local b = Vector3.new(-2, -2, -2)
		assert.are.same(
			Vector3.new(6, 8, 10),
			a * b
		)
	end)
	it("should return a new Vector3 instance", function()
		local a = Vector3.new(3, 4, 5)
		local b = Vector3.new(3, 3, 3)
		
		local result = a * b
		assert.are.same(
			Vector3.new(9, 12, 15),
			result
		)
		assert.are_not.equal(result, a)
		assert.are_not.equal(result, b)
	end)
end)