prosody
87bc26f23d9b
spec/util_format_spec.lua

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spec/util_format_spec.lua @ 12031:87bc26f23d9b

util.format: Escape invalid UTF-8 by passing trough serialization Should prevent invalid UTF-8 from making it into the logs, which can cause trouble with terminals or log viewers or other tools, such as when grep determines that log files are binary.
author Kim Alvefur <zash@zash.se>
date Fri, 10 Dec 2021 22:48:45 +0100
parent 11644:fc1b8fe94d04
child 12032:3db09eb4c43b
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);

		it("escapes invalid UTF-8", function ()
			assert.equal("\"Hello w\\195rld\"", format("%s", "Hello w\195rld"));
		end);

	end);
end);