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require 'luacov'
local M = require 'moses'
describe('Operators specs', function()
describe('Arithmetic operators', function()
it('add returns a + b', function()
assert.equal(M.operator.add(1,2), 3)
assert.equal(M.operator.add(0,0), 0)
assert.equal(M.operator.add(0,-5), -5)
end)
it('sub returns a - b', function()
assert.equal(M.operator.sub(1,2), -1)
assert.equal(M.operator.sub(0,0), 0)
assert.equal(M.operator.sub(0,-5), 5)
end)
it('mul returns a * b', function()
assert.equal(M.operator.mul(1,2), 2)
assert.equal(M.operator.mul(0,0), 0)
assert.equal(M.operator.mul(0,-5), 0)
end)
it('div returns a / b', function()
assert.equal(M.operator.div(1,2), 0.5)
assert.equal(M.operator.div(5,5), 1)
assert.equal(M.operator.div(8,-2), -4)
end)
it('mod returns a % b', function()
assert.equal(M.operator.mod(6,3), 0)
assert.equal(M.operator.mod(5,2), 1)
end)
it('exp returns a ^ b', function()
assert.equal(M.operator.exp(3,3), 27)
assert.equal(M.operator.exp(5,2), 25)
end)
it('unm returns -a', function()
assert.equal(M.operator.unm(3), -3)
assert.equal(M.operator.unm(-5), 5)
end)
it('floordiv returns a//b', function()
assert.equal(M.operator.floordiv(5,2), 2)
end)
it('intdiv performs integer division', function()
assert.equal(M.operator.intdiv(5,2), 2)
assert.equal(M.operator.intdiv(-5,2), -2)
end)
end)
describe('Relational operators', function()
it('eq returns a == b', function()
assert.equal(M.operator.eq(5,5), true)
assert.equal(M.operator.eq(5,4.99), false)
end)
it('neq returns a ~= b', function()
assert.equal(M.operator.neq(5,5), false)
assert.equal(M.operator.neq(5,4.99), true)
end)
it('lt returns a < b', function()
assert.equal(M.operator.lt(5,5), false)
assert.equal(M.operator.lt(4.99,5), true)
end)
it('gt returns a > b', function()
assert.equal(M.operator.gt(5,5), false)
assert.equal(M.operator.gt(5,4.99), true)
end)
it('le returns a <= b', function()
assert.equal(M.operator.le(5,5), true)
assert.equal(M.operator.le(4.99,5), true)
assert.equal(M.operator.le(5,4.99), false)
end)
it('ge returns a >= b', function()
assert.equal(M.operator.ge(5,5), true)
assert.equal(M.operator.ge(4.99,5), false)
assert.equal(M.operator.ge(5,4.99), true)
end)
end)
describe('Logical operators', function()
it('land returns a and b', function()
assert.equal(M.operator.land(true, true),true)
assert.equal(M.operator.land(true, false),false)
assert.equal(M.operator.land(false, true),false)
assert.equal(M.operator.land(false, false),false)
assert.equal(M.operator.land(true, nil),nil)
assert.equal(M.operator.land(false, nil),false)
end)
it('lor returns a or b', function()
assert.equal(M.operator.lor(true, true),true)
assert.equal(M.operator.lor(true, false),true)
assert.equal(M.operator.lor(false, true),true)
assert.equal(M.operator.lor(false, false),false)
assert.equal(M.operator.lor(true, nil),true)
assert.equal(M.operator.lor(false, nil),nil)
end)
it('lnot returns not a', function()
assert.equal(M.operator.lnot(true),false)
assert.equal(M.operator.lnot(false),true)
assert.equal(M.operator.lnot(nil),true)
end)
end)
describe('Length operator', function()
it('length returns #a', function()
assert.equal(M.operator.length({}),0)
assert.equal(M.operator.length({2}),1)
assert.equal(M.operator.length({3,5,3}),3)
assert.equal(M.operator.length('hello'),5)
end)
end)
describe('Concatenation operator', function()
it('concat returns a..b', function()
assert.equal(M.operator.concat('a','b'),'ab')
assert.equal(M.operator.concat('1','2'),'12')
end)
end)
describe('Aliases', function()
it('op is an alias to operator', function()
assert.equal(M.operator, M.op)
end)
it('pow is an alias to exp', function()
assert.equal(M.operator.exp, M.operator.pow)
end)
it('neg is an alias to unm', function()
assert.equal(M.operator.neg, M.operator.unm)
end)
it('len is alias to length', function()
assert.equal(M.operator.length,M.operator.len)
end)
end)
end)
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