41 lines
1.0 KiB
Lua
41 lines
1.0 KiB
Lua
-- tests misc functions added by dfhack.lua
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function test.safe_pairs()
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for k,v in safe_pairs(nil) do
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expect.fail('nil should not be iterable')
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end
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for k,v in safe_pairs('a') do
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expect.fail('a string should not be iterable')
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end
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for k,v in safe_pairs({}) do
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expect.fail('an empty table should not be iterable')
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end
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for k,v in safe_pairs(df.item._identity) do
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expect.fail('a non-iterable light userdata var should not be iterable')
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end
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local iterated = 0
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local t = {a='hello', b='world', [1]='extra'}
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for k,v in safe_pairs(t) do
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expect.eq(t[k], v)
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iterated = iterated + 1
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end
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expect.eq(3, iterated)
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end
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function test.safe_pairs_ipairs()
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local t = {1, 2}
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setmetatable(t, {
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__pairs = function()
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expect.fail('pairs() should not be called')
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end,
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})
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local iterated = 0
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for k,v in safe_pairs(t, ipairs) do
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expect.eq(k, v)
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iterated = iterated + 1
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end
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expect.eq(#t, iterated)
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end
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