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Use select('#', ...) instead of ipairs on varargs

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This means we don't discard any value after nil, meaning that
calls such as colors.combine(nil, 1, 2, 3) will error, rather
than returning 0.
This commit is contained in:
SquidDev
2019-06-01 10:12:10 +01:00
parent 17645a79f0
commit d4b8650d21
4 changed files with 42 additions and 17 deletions
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28
src/test/resources/test-rom/spec/apis/textutils_spec.lua
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@@ -20,10 +20,36 @@ describe("The textutils library", function()
end)
end)
describe("textutils.tabulate", function()
it("validates arguments", function()
term.redirect(window.create(term.current(), 1, 1, 5, 5, false))
textutils.tabulate()
textutils.tabulate({ "test" })
textutils.tabulate(colors.white)
expect.error(textutils.tabulate, nil):eq("bad argument #1 (expected number or table, got nil)")
expect.error(textutils.tabulate, { "test" }, nil):eq("bad argument #2 (expected number or table, got nil)")
end)
end)
describe("textutils.pagedTabulate", function()
it("validates arguments", function()
term.redirect(window.create(term.current(), 1, 1, 5, 5, false))
textutils.pagedTabulate()
textutils.pagedTabulate({ "test" })
textutils.pagedTabulate(colors.white)
expect.error(textutils.pagedTabulate, nil):eq("bad argument #1 (expected number or table, got nil)")
expect.error(textutils.pagedTabulate, { "test" }, nil):eq("bad argument #2 (expected number or table, got nil)")
end)
end)
describe("textutils.empty_json_array", function()
it("is immutable", function()
expect.error(function() textutils.empty_json_array[1] = true end)
:eq("textutils_spec.lua:25: attempt to mutate textutils.empty_json_array")
:eq("textutils_spec.lua:51: attempt to mutate textutils.empty_json_array")
end)
end)