prosody
5f4a657136bc
spec/util_format_spec.lua

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spec/util_format_spec.lua @ 11638:5f4a657136bc

util.format: Escape ASCII control characters in output This should offer some protection against doing evil things to terminals. Doesn't protect against pure broken UTF-8 garbage however. See #734
author Kim Alvefur <zash@zash.se>
date Tue, 15 Jun 2021 23:24:23 +0200
parent 10035:386f085820e6
child 11644:fc1b8fe94d04
line wrap: on
line source

local format = require "util.format".format;

describe("util.format", function()
	describe("#format()", function()
		it("should work", function()
			assert.equal("hello", format("%s", "hello"));
			assert.equal("<nil>", format("%s"));
			assert.equal("<nil>", format("%d"));
			assert.equal("<nil>", format("%q"));
			assert.equal(" [<nil>]", format("", nil));
			assert.equal("true", format("%s", true));
			assert.equal("[true]", format("%d", true));
			assert.equal("% [true]", format("%%", true));
			assert.equal("{ }", format("%q", { }));
			assert.equal("[1.5]", format("%d", 1.5));
			assert.equal("[7.3786976294838e+19]", format("%d", 73786976294838206464));
		end);

		it("escapes ascii control stuff", function ()
			assert.equal("␁", format("%s", "\1"));
		end);

	end);
end);