mirror of
https://github.com/neovim/neovim.git
synced 2025-11-04 09:44:31 +00:00
295 lines
9.5 KiB
Lua
295 lines
9.5 KiB
Lua
local helpers = require('test.functional.helpers')(after_each)
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local clear = helpers.clear
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local eq = helpers.eq
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local command = helpers.command
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local api = helpers.api
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local eval = helpers.eval
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local exc_exec = helpers.exc_exec
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local pcall_err = helpers.pcall_err
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local fn = helpers.fn
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local NIL = vim.NIL
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local source = helpers.source
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describe('string() function', function()
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before_each(clear)
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describe('used to represent floating-point values', function()
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it('dumps NaN values', function()
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eq("str2float('nan')", eval("string(str2float('nan'))"))
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end)
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it('dumps infinite values', function()
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eq("str2float('inf')", eval("string(str2float('inf'))"))
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eq("-str2float('inf')", eval("string(str2float('-inf'))"))
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end)
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it('dumps regular values', function()
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eq('1.5', fn.string(1.5))
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eq('1.56e-20', fn.string(1.56000e-020))
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eq('0.0', eval('string(0.0)'))
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end)
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it('dumps special v: values', function()
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eq('v:true', eval('string(v:true)'))
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eq('v:false', eval('string(v:false)'))
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eq('v:null', eval('string(v:null)'))
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eq('v:true', fn.string(true))
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eq('v:false', fn.string(false))
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eq('v:null', fn.string(NIL))
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end)
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it('dumps values with at most six digits after the decimal point', function()
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eq('1.234568e-20', fn.string(1.23456789123456789123456789e-020))
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eq('1.234568', fn.string(1.23456789123456789123456789))
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end)
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it('dumps values with at most seven digits before the decimal point', function()
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eq('1234567.891235', fn.string(1234567.89123456789123456789))
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eq('1.234568e7', fn.string(12345678.9123456789123456789))
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end)
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it('dumps negative values', function()
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eq('-1.5', fn.string(-1.5))
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eq('-1.56e-20', fn.string(-1.56000e-020))
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eq('-1.234568e-20', fn.string(-1.23456789123456789123456789e-020))
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eq('-1.234568', fn.string(-1.23456789123456789123456789))
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eq('-1234567.891235', fn.string(-1234567.89123456789123456789))
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eq('-1.234568e7', fn.string(-12345678.9123456789123456789))
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end)
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end)
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describe('used to represent numbers', function()
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it('dumps regular values', function()
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eq('0', fn.string(0))
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eq('-1', fn.string(-1))
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eq('1', fn.string(1))
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end)
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it('dumps large values', function()
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eq('2147483647', fn.string(2 ^ 31 - 1))
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eq('-2147483648', fn.string(-2 ^ 31))
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end)
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end)
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describe('used to represent strings', function()
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it('dumps regular strings', function()
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eq("'test'", fn.string('test'))
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end)
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it('dumps empty strings', function()
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eq("''", fn.string(''))
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end)
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it("dumps strings with ' inside", function()
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eq("''''''''", fn.string("'''"))
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eq("'a''b'''''", fn.string("a'b''"))
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eq("'''b''''d'", fn.string("'b''d"))
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eq("'a''b''c''d'", fn.string("a'b'c'd"))
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end)
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it('dumps NULL strings', function()
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eq("''", eval('string($XXX_UNEXISTENT_VAR_XXX)'))
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end)
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it('dumps NULL lists', function()
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eq('[]', eval('string(v:_null_list)'))
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end)
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it('dumps NULL dictionaries', function()
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eq('{}', eval('string(v:_null_dict)'))
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end)
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end)
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describe('used to represent funcrefs', function()
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before_each(function()
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source([[
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function Test1()
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endfunction
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function s:Test2() dict
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endfunction
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function g:Test3() dict
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endfunction
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let g:Test2_f = function('s:Test2')
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]])
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end)
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it('dumps references to built-in functions', function()
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eq("function('function')", eval('string(function("function"))'))
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end)
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it('dumps references to user functions', function()
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eq("function('Test1')", eval('string(function("Test1"))'))
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eq("function('g:Test3')", eval('string(function("g:Test3"))'))
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end)
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it('dumps references to script functions', function()
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eq("function('<SNR>1_Test2')", eval('string(Test2_f)'))
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end)
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it('dumps partials with self referencing a partial', function()
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source([[
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function TestDict() dict
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endfunction
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let d = {}
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let TestDictRef = function('TestDict', d)
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let d.tdr = TestDictRef
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]])
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eq(
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'Vim(echo):E724: unable to correctly dump variable with self-referencing container',
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pcall_err(command, 'echo string(d.tdr)')
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)
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end)
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it('dumps automatically created partials', function()
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eq(
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"function('<SNR>1_Test2', {'f': function('<SNR>1_Test2')})",
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eval('string({"f": Test2_f}.f)')
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)
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eq(
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"function('<SNR>1_Test2', [1], {'f': function('<SNR>1_Test2', [1])})",
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eval('string({"f": function(Test2_f, [1])}.f)')
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)
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end)
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it('dumps manually created partials', function()
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eq("function('Test3', [1, 2], {})", eval('string(function("Test3", [1, 2], {}))'))
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eq("function('Test3', {})", eval('string(function("Test3", {}))'))
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eq("function('Test3', [1, 2])", eval('string(function("Test3", [1, 2]))'))
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end)
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it('does not crash or halt when dumping partials with reference cycles in self', function()
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api.nvim_set_var('d', { v = true })
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eq(
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[[Vim(echo):E724: unable to correctly dump variable with self-referencing container]],
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pcall_err(command, 'echo string(extend(extend(g:d, {"f": g:Test2_f}), {"p": g:d.f}))')
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)
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end)
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it('does not show errors when dumping partials referencing the same dictionary', function()
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command('let d = {}')
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-- Regression for “eval/typval_encode: Dump empty dictionary before
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-- checking for refcycle”, results in error.
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eq(
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"[function('tr', {}), function('tr', {})]",
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eval('string([function("tr", d), function("tr", d)])')
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)
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-- Regression for “eval: Work with reference cycles in partials (self)
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-- properly”, results in crash.
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eval('extend(d, {"a": 1})')
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eq(
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"[function('tr', {'a': 1}), function('tr', {'a': 1})]",
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eval('string([function("tr", d), function("tr", d)])')
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)
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end)
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it('does not crash or halt when dumping partials with reference cycles in arguments', function()
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api.nvim_set_var('l', {})
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eval('add(l, l)')
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-- Regression: the below line used to crash (add returns original list and
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-- there was error in dumping partials). Tested explicitly in
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-- test/unit/api/private_helpers_spec.lua.
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eval('add(l, function("Test1", l))')
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eq(
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[=[Vim(echo):E724: unable to correctly dump variable with self-referencing container]=],
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pcall_err(command, 'echo string(function("Test1", l))')
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)
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end)
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it(
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'does not crash or halt when dumping partials with reference cycles in self and arguments',
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function()
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api.nvim_set_var('d', { v = true })
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api.nvim_set_var('l', {})
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eval('add(l, l)')
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eval('add(l, function("Test1", l))')
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eval('add(l, function("Test1", d))')
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eq(
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[=[Vim(echo):E724: unable to correctly dump variable with self-referencing container]=],
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pcall_err(
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command,
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'echo string(extend(extend(g:d, {"f": g:Test2_f}), {"p": function(g:d.f, l)}))'
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)
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)
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end
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)
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end)
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describe('used to represent lists', function()
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it('dumps empty list', function()
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eq('[]', fn.string({}))
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end)
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it('dumps nested lists', function()
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eq('[[[[[]]]]]', fn.string({ { { { {} } } } }))
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end)
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it('dumps nested non-empty lists', function()
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eq('[1, [[3, [[5], 4]], 2]]', fn.string({ 1, { { 3, { { 5 }, 4 } }, 2 } }))
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end)
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it('errors when dumping recursive lists', function()
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api.nvim_set_var('l', {})
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eval('add(l, l)')
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eq(
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'Vim(echo):E724: unable to correctly dump variable with self-referencing container',
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exc_exec('echo string(l)')
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)
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end)
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it('dumps recursive lists despite the error', function()
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api.nvim_set_var('l', {})
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eval('add(l, l)')
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eq(
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'Vim(echo):E724: unable to correctly dump variable with self-referencing container',
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pcall_err(command, 'echo string(l)')
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)
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eq(
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'Vim(echo):E724: unable to correctly dump variable with self-referencing container',
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pcall_err(command, 'echo string([l])')
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)
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end)
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end)
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describe('used to represent dictionaries', function()
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it('dumps empty dictionary', function()
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eq('{}', eval('string({})'))
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end)
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it('dumps list with two same empty dictionaries, also in partials', function()
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command('let d = {}')
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eq('[{}, {}]', eval('string([d, d])'))
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eq("[function('tr', {}), {}]", eval('string([function("tr", d), d])'))
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eq("[{}, function('tr', {})]", eval('string([d, function("tr", d)])'))
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end)
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it('dumps non-empty dictionary', function()
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eq("{'t''est': 1}", fn.string({ ["t'est"] = 1 }))
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end)
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it('errors when dumping recursive dictionaries', function()
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api.nvim_set_var('d', { d = 1 })
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eval('extend(d, {"d": d})')
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eq(
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'Vim(echo):E724: unable to correctly dump variable with self-referencing container',
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exc_exec('echo string(d)')
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)
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end)
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it('dumps recursive dictionaries despite the error', function()
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api.nvim_set_var('d', { d = 1 })
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eval('extend(d, {"d": d})')
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eq(
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'Vim(echo):E724: unable to correctly dump variable with self-referencing container',
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pcall_err(command, 'echo string(d)')
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)
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eq(
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'Vim(echo):E724: unable to correctly dump variable with self-referencing container',
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pcall_err(command, 'echo string({"out": d})')
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)
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end)
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end)
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end)
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