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pretty/test/test_number.lua

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local SUITE = require('TestSuite').new('number')
SUITE:setEnviroment{
format = require('pretty')
}
local function format_test (t)
SUITE:addTest(t.expect, function ()
assert_equal(t.expect, format(t.input, t.options))
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end, { line = debug.getinfo(2).currentline })
end
local function number_test (t)
if t.single then
SUITE:addTest((t.name or t.expect)..' single', function ()
assert_equal(t.single, format(t.input, {}))
end, { line = debug.getinfo(2).currentline })
end
SUITE:addTest((t.name or t.expect) .. ' small', function ()
assert_equal('{ '..t.expect..' }', format({t.input}, {}))
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end, { line = debug.getinfo(2).currentline })
end
--------------------------------------------------------------------------------
-- Integers
number_test {
input = 0,
expect = '0',
}
number_test {
input = -0,
expect = '0',
}
number_test {
input = 2000,
expect = '2000',
single = '2000',
}
number_test {
input = -2000,
expect = '-2000',
}
--------------------------------------------------------------------------------
-- Exponents
number_test {
input = 10^5,
expect = '10^5',
}
number_test {
input = 10^-6,
expect = '10^-6',
}
number_test {
input = 2^17,
expect = '2^17',
}
number_test {
input = 2^-7,
expect = '2^-7',
}
--------------------------------------------------------------------------------
-- Decimal numbers
number_test {
input = 0.1,
expect = '0.1',
}
number_test {
input = 0.65,
expect = '0.65',
}
number_test {
input = 2.05,
expect = '2.05',
}
number_test {
input = 2.0512523,
expect = '2.0512523',
}
number_test {
name = 'Large decimal number',
input = 60982348080952348324.42342,
expect = '6.0982348080952*10^19',
single = '6.0982348080952*10^19 -- Approx: 60982348080952344576',
}
--------------------------------------------------------------------------------
-- Fractions
number_test {
input = 1/3,
expect = '1/3',
}
number_test {
input = 9/17,
expect = '9/17',
}
--------------------------------------------------------------------------------
-- Squareroots, logarithms, and other fine functions
number_test {
input = math.sqrt(8),
expect = 'math.sqrt(8)',
}
number_test {
input = 1/math.sqrt(8),
expect = '1/math.sqrt(8)',
}
number_test {
input = math.log(8),
expect = 'math.log(8)',
}
--[[ Factorials are fun, but they are not inheritly supported in the language.
number_test {
input = 6227020800,
expect = 'fac(13)',
single = '6227020800',
}
]]
--------------------------------------------------------------------------------
-- Constants, and multiples of constants
number_test {
input = math.pi,
expect = 'math.pi',
}
number_test {
input = 7*math.pi,
expect = '7*math.pi',
}
number_test {
input = math.exp(1),
expect = 'math.exp(1)',
}
number_test {
input = math.exp(10),
expect = 'math.exp(10)',
}
number_test {
input = 1/0,
expect = '1/0',
}
number_test {
input = -1/0,
expect = '-1/0',
}
number_test {
input = 0/0,
expect = '0/0',
}
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--------------------------------------------------------------------------------
-- Use the expression closest to the real value
do
local sum = 0
for i = 1, 100 do sum = sum + math.pi/100 end
number_test {
name = 'Approx π',
input = sum,
expect = 'math.pi',
}
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end
number_test {
input = 4*4,
expect = '16',
}
--------------------------------------------------------------------------------
number_test {
-- A half should always be represented using 1/2, never with 2⁻¹.
input = 1/2,
expect = '1/2',
single = '1/2 -- Approx: 0.5'
}
format_test {
input = { 1/2, 1/3, 1/4, 1/5 },
expect = '{ 1/2, 1/3, 1/4, 1/5 }',
}
--------------------------------------------------------------------------------
return SUITE