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spec/util_format_spec.lua @ 12032:3db09eb4c43b
util.format: Ensure sanitation of strings passed to wrong format
Ie. log("debug", "%d", "\1\2\3") should not result in garbage.
Also optimizing for the common case of ASCII string passed to %s and
early returns everywhere.
Returning nil from a gsub callback keeps the original substring.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 11 Dec 2021 13:30:34 +0100 (2021-12-11) |
parent | 12031:87bc26f23d9b |
child | 12033:161f8268c4b3 |
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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")); assert.equal("[␁]", format("%d", "\1")); end); it("escapes invalid UTF-8", function () assert.equal("\"Hello w\\195rld\"", format("%s", "Hello w\195rld")); end); end); end);