--
-- Tests for the `version` module
--
local Version = require 'Version'
local tasty = require 'tasty'
local group = tasty.test_group
local test = tasty.test_case
local assert = tasty.assert
return {
group 'constructor' {
test('has type `userdata`', function ()
assert.are_same(type(Version {2}), 'userdata')
end),
test('accepts list of integers', function ()
assert.are_same(type(Version {2, 7, 3}), 'userdata')
end),
test('accepts a single integer', function ()
assert.are_same(Version(5), Version {5})
end),
test('accepts version as string', function ()
assert.are_same(
Version '4.45.1',
Version {4, 45, 1}
)
end),
test('non-version string is rejected', function ()
local success, msg = pcall(function () return Version '11friends' end)
assert.is_falsy(success)
assert.is_truthy(tostring(msg):match('11friends'))
end)
},
group 'comparison' {
test('smaller (equal) than', function ()
assert.is_truthy(Version {2, 58, 3} < Version {2, 58, 4})
assert.is_falsy(Version {2, 60, 1} < Version {2, 59, 2})
assert.is_truthy(Version {0, 14, 3} < Version {0, 14, 3, 1})
assert.is_truthy(Version {3, 58, 3} <= Version {4})
assert.is_truthy(Version {0, 14, 3} <= Version {0, 14, 3, 1})
end),
test('larger (equal) than', function ()
assert.is_truthy(Version{2,58,3} > Version {2, 57, 4})
assert.is_truthy(Version{2,58,3} > Version {2, 58, 2})
assert.is_truthy(Version {0, 8} >= Version {0, 8})
assert.is_falsy(Version {0, 8} >= Version {0, 8, 2})
end),
test('equality', function ()
assert.is_truthy(Version '8.8', Version {8, 8})
end),
test('second argument can be a version string', function ()
assert.is_truthy(Version '8' < '9.1')
assert.is_falsy(Version '8.8' < '8.7')
end),
test('equality test works with value not usable as a version', function ()
assert.is_falsy(Version '8' == function() end)
end),
test('other comparisons fail if one value is not a version', function ()
assert.error_matches(
function () return Version '8' < (function() end) end,
'could not peek Version'
)
assert.error_matches(
function () return Version '8' <= (function() end) end,
'could not peek Version'
)
assert.error_matches(
function () return Version '8' > (function() end) end,
'could not peek Version'
)
end)
},
group 'conversion to string' {
test('converting from and to string is a noop', function ()
local version_string = '1.19.4'
assert.are_equal(tostring(Version(version_string)), version_string)
end)
},
group 'convenience functions' {
test('throws error if version is too old', function ()
local actual = Version {2, 8}
local expected = Version {2, 9}
assert.error_matches(
function () actual:must_be_at_least(expected) end,
'expected version 2.9 or newer, got 2.8'
)
end),
test('does nothing if expected version is older than actual', function ()
local actual = Version '2.9'
local expected = Version '2.8'
actual:must_be_at_least(expected)
end),
test('does nothing if expected version equals to actual', function ()
local actual = Version '2.8'
local expected = Version '2.8'
actual:must_be_at_least(expected)
end)
},
group 'list-like behavior' {
test('can access version component numbers', function ()
local version = Version '2.7.3'
assert.is_nil(version[0])
assert.are_equal(version[1], 2)
assert.are_equal(version[2], 7)
assert.are_equal(version[3], 3)
end),
test('can be iterated over', function ()
local version_list = {2, 7, 3}
local final_index = 0
for i, v in pairs(Version(version_list)) do
assert.are_equal(v, version_list[i])
final_index = i
end
assert.are_equal(final_index, 3)
end),
test('length is the number of components', function ()
assert.are_equal(#(Version '0'), 1)
assert.are_equal(#(Version '1.6'), 2)
assert.are_equal(#(Version '8.7.5'), 3)
assert.are_equal(#(Version '2.9.1.5'), 4)
end),
test('branches can be modified', function ()
local v = Version '5.3.6'
v[2] = 2
v[3] = nil
assert.are_equal(v, Version '5.2')
end)
}
}