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#!/usr/bin/env tarantool
local yaml = require('yaml').new()
yaml.cfg{
encode_invalid_numbers = true,
encode_load_metatables = true,
encode_use_tostring = true,
encode_invalid_as_nil = true,
}
local test = require('tap').test('table')
test:plan(31)
do -- check basic table.copy (deepcopy)
local example_table = {
{1, 2, 3},
{"help, I'm very nested", {{{ }}} }
}
local copy_table = table.deepcopy(example_table)
test:is_deeply(
example_table,
copy_table,
"checking, that deepcopy behaves ok"
)
test:isnt(
example_table,
copy_table,
"checking, that tables are different"
)
test:isnt(
example_table[1],
copy_table[1],
"checking, that tables are different"
)
test:isnt(
example_table[2],
copy_table[2],
"checking, that tables are different"
)
test:isnt(
example_table[2][2],
copy_table[2][2],
"checking, that tables are different"
)
test:isnt(
example_table[2][2][1],
copy_table[2][2][1],
"checking, that tables are different"
)
end
do -- check basic table.copy (deepcopy)
local example_table = {
{1, 2, 3},
{"help, I'm very nested", {{{ }}} }
}
local copy_table = table.copy(example_table, true)
test:is_deeply(
example_table,
copy_table,
"checking, that deepcopy behaves ok + shallow"
)
test:isnt(
example_table,
copy_table,
"checking, that tables are different + shallow"
)
test:is(
example_table[1],
copy_table[1],
"checking, that tables are the same + shallow"
)
test:is(
example_table[2],
copy_table[2],
"checking, that tables are the same + shallow"
)
test:is(
example_table[2][2],
copy_table[2][2],
"checking, that tables are the same + shallow"
)
test:is(
example_table[2][2][1],
copy_table[2][2][1],
"checking, that tables are the same + shallow"
)
end
do -- check cycle resolution for table.copy (deepcopy)
local recursive_table_1 = {}
local recursive_table_2 = {}
recursive_table_1[1] = recursive_table_2
recursive_table_2[1] = recursive_table_1
local copy_table_1 = table.deepcopy(recursive_table_1)
local copy_table_2 = table.deepcopy(recursive_table_2)
test:isnt(
copy_table_1,
recursive_table_1,
"table 1. checking, that tables are different"
)
test:isnt(
copy_table_1[1],
recursive_table_1[1],
"table 1. checking, that tables are different"
)
test:isnt(
copy_table_1[1][1],
recursive_table_1[1][1],
"table 1. checking, that tables are different"
)
test:is(
copy_table_1,
copy_table_1[1][1],
"table 1. checking, that cyclic reference is ok"
)
test:isnt(
copy_table_2,
recursive_table_2,
"table 2. checking, that tables are different"
)
test:isnt(
copy_table_2[1],
recursive_table_2[1],
"table 2. checking, that tables are different"
)
test:isnt(
copy_table_2[1][1],
recursive_table_2[1][1],
"table 2. checking, that tables are different"
)
test:is(
copy_table_2,
copy_table_2[1][1],
"table 2. checking, that cyclic reference is ok"
)
end
do -- check usage of __copy metamethod
local copy_mt = nil; copy_mt = {
__copy = function(self)
local new_self = { a = 1}
return setmetatable(new_self, copy_mt)
end
}
local one_self = setmetatable({ a = 2 }, copy_mt)
local another_self = table.deepcopy(one_self)
test:isnt(one_self, another_self, "checking that output tables differs")
test:is(
getmetatable(one_self),
getmetatable(another_self),
"checking that we've called __copy"
)
test:isnt(one_self.a, another_self.a, "checking that we've called __copy")
end
do -- check usage of __copy metamethod + shallow
local copy_mt = nil; copy_mt = {
__copy = function(self)
local new_self = { a = 1}
return setmetatable(new_self, copy_mt)
end
}
local one_self = setmetatable({ a = 2 }, copy_mt)
local another_self = table.copy(one_self, true)
test:isnt(
one_self,
another_self,
"checking that output objects differs + shallow"
)
test:is(
getmetatable(one_self),
getmetatable(another_self),
"checking that we've called __copy + shallow (same obj types)"
)
test:isnt(
one_self.a,
another_self.a,
"checking that we've called __copy + shallow (diff obj values)"
)
end
do -- check usage of not __copy metamethod on second level + shallow
local copy_mt = nil; copy_mt = {
__copy = function(self)
local new_self = { a = 1 }
return setmetatable(new_self, copy_mt)
end
}
local one_self = { setmetatable({ a = 2 }, copy_mt) }
local another_self = table.copy(one_self, true)
test:isnt(
one_self, another_self,
"checking that output tables differs + shallow"
)
test:isnil(
getmetatable(one_self),
"checking that we've called __copy + shallow and no mt"
)
test:isnil(
getmetatable(another_self),
"checking that we've called __copy + shallow and no mt"
)
test:is(
one_self[1],
another_self[1],
"checking that we've called __copy + shallow and object is the same"
)
test:is(
one_self[1].a,
another_self[1].a,
"checking that we've called __copy + shallow and object val is the same"
)
end
os.exit(test:check() == true and 0 or 1)
|
