Jon Michael Aanes
aec232efcb
that automatically creates a useful error message, when the assert fails.
87 lines
3.2 KiB
Lua
87 lines
3.2 KiB
Lua
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local SUITE = require 'TestSuite' 'assert-gooder'
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SUITE:setEnvironment {
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assert = require 'assert-gooder'
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}
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--------------------------------------------------------------------------------
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SUITE:addTest('local variable', function ()
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local _, msg = pcall(function ()
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local a = 2
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assert(type(a) == 'string')
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end)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-2)..': '..'assertion failed! bad local \'a\' (string expected, but got number: 2)', msg)
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end)
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SUITE:addTest('upvalue variable', function ()
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local a = 2
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local _, msg = pcall(function ()
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assert(type(a) == 'string')
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end)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-2)..': '..'assertion failed! bad upvalue \'a\' (string expected, but got number: 2)', msg)
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end)
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SUITE:addTest('global variable', function ()
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a = 2
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local _, msg = pcall(function ()
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assert(type(a) == 'string')
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end)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-2)..': '..'assertion failed! bad global \'a\' (string expected, but got number: 2)', msg)
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end)
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SUITE:addTest('argument to anon function', function ()
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local _, msg = pcall(function (a)
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assert(type(a) == 'string')
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end, 2)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-2)..': '..'assertion failed! bad argument #1 \'a\' to anonymous function (string expected, but got number: 2)', msg)
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end)
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SUITE:addTest('argument to named function', function ()
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local f = function (a)
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assert(type(a) == 'string')
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end
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local _, msg = pcall(function () f(2) end)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-3)..': '..'assertion failed! bad argument #1 \'a\' to \'f\' (string expected, but got number: 2)', msg)
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end)
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--------------------------------------------------------------------------------
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-- Other assert types
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SUITE:addTest('compare values', function ()
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local _, msg = pcall(function ()
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local a = 2
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assert(a == 4)
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end)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-2)..': '..'assertion failed! bad local \'a\' (value of 4 expected, but got: 2)', msg)
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end)
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SUITE:addTest('compare values across types', function ()
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local _, msg = pcall(function ()
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local a = "hi"
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assert(a == 4)
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end)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-2)..': '..'assertion failed! bad local \'a\' (value of 4 expected, but got string: "hi")', msg)
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end)
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--------------------------------------------------------------------------------
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SUITE:addTest('can improve asserts in loaded strings too', function ()
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local func = loadstring "return function(a) assert(type(a) == 'string') end" ()
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local _, msg = pcall(setfenv(func, getfenv()), 42)
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assert_equal('[string "return function(a) assert(type(a) == \'string\'..."]:1: '..'assertion failed! bad argument #1 \'a\' to anonymous function (string expected, but got number: 42)', msg)
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end)
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SUITE:addTest('really complicated expression', function ()
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local f = function ()
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assert(a == 3 and math.floor(2.522) == 2 or 5 == n)
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end
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local _, msg = pcall(f, 2)
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assert_equal('./test/test_assert-gooder.lua:'..curline(-3)..': '..'assertion failed! expression `a == 3 and math.floor(2.522) == 2 or 5 == n` evaluated to false', msg)
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end)
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--------------------------------------------------------------------------------
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return SUITE
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