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

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local Vector3 = require("worldeditadditions_core.utils.vector3")
describe("Vector3.subtract", function()
it("should subtract 2 positive vectors", function()
local a = Vector3.new(3, 4, 5)
local b = Vector3.new(1, 1, 1)
assert.are.same(
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Vector3.new(2, 3, 4),
a:subtract(b)
)
end)
it("should work with the sub alias", function()
local a = Vector3.new(3, 4, 5)
local b = Vector3.new(1, 1, 1)
assert.are.same(
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Vector3.new(2, 3, 4),
a:sub(b)
)
end)
it("should work with scalar a", function()
local a = 2
local b = Vector3.new(6, 7, 8)
assert.are.same(
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Vector3.new(4, 5, 6),
a - b
)
end)
it("should work with scalar b", function()
local a = Vector3.new(6, 7, 8)
local b = 2
assert.are.same(
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Vector3.new(4, 5, 6),
a - b
)
end)
it("should support the subtract operator", function()
local a = Vector3.new(3, 4, 5)
local b = Vector3.new(1, 1, 1)
assert.are.same(
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Vector3.new(2, 3, 4),
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(
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Vector3.new(4, 5, 6),
a - b
)
end)
it("should handle negative a", function()
local a = Vector3.new(-3, -4, -5)
local b = Vector3.new(1, 1, 1)
assert.are.same(
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Vector3.new(-4, -5, -6),
a - b
)
end)
it("should handle negative a and b", function()
local a = Vector3.new(-3, -4, -5)
local b = Vector3.new(-1, -1, -1)
assert.are.same(
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Vector3.new(-2, -3, -4),
a - b
)
end)
it("should return a new Vector3 instance", function()
local a = Vector3.new(3, 4, 5)
local b = Vector3.new(1, 1, 1)
local result = a - b
assert.are.same(
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Vector3.new(2, 3, 4),
result
)
assert.are_not.equal(result, a)
assert.are_not.equal(result, b)
end)
end)