File

spec/util_error_spec.lua @ 12475:553c6204fe5b 0.12

util.argparse: Return final 'arg' table with positional arguments for convenience This is the same as the input table (which is mutated during processing), but if that table was created on the fly, such as by packing `...` it's convenient if it also gets returned from the parse function.
author Matthew Wild <mwild1@gmail.com>
date Mon, 25 Apr 2022 15:09:41 +0100
parent 11221:b0a563716334
child 13080:031382b207ec
line wrap: on
line source

local errors = require "util.error"

describe("util.error", function ()
	describe("new()", function ()
		it("works", function ()
			local err = errors.new("bork", "bork bork");
			assert.not_nil(err);
			assert.equal("cancel", err.type);
			assert.equal("undefined-condition", err.condition);
			assert.same("bork bork", err.context);
		end);

		describe("templates", function ()
			it("works", function ()
				local templates = {
					["fail"] = {
						type = "wait",
						condition = "internal-server-error",
						code = 555;
					};
				};
				local err = errors.new("fail", { traceback = "in some file, somewhere" }, templates);
				assert.equal("wait", err.type);
				assert.equal("internal-server-error", err.condition);
				assert.equal(555, err.code);
				assert.same({ traceback = "in some file, somewhere" }, err.context);
			end);
		end);

	end);

	describe("is_err()", function ()
		it("works", function ()
			assert.truthy(errors.is_err(errors.new()));
			assert.falsy(errors.is_err("not an error"));
		end);
	end);

	describe("coerce", function ()
		it("works", function ()
			local ok, err = errors.coerce(nil, "it dun goofed");
			assert.is_nil(ok);
			assert.truthy(errors.is_err(err))
		end);
	end);

	describe("from_stanza", function ()
		it("works", function ()
			local st = require "util.stanza";
			local m = st.message({ type = "chat" });
			local e = st.error_reply(m, "modify", "bad-request", nil, "error.example"):tag("extra", { xmlns = "xmpp:example.test" });
			local err = errors.from_stanza(e);
			assert.truthy(errors.is_err(err));
			assert.equal("modify", err.type);
			assert.equal("bad-request", err.condition);
			assert.equal(e, err.context.stanza);
			assert.equal("error.example", err.context.by);
			assert.not_nil(err.extra.tag);
		end);
	end);

	describe("__tostring", function ()
		it("doesn't throw", function ()
			assert.has_no.errors(function ()
				-- See 6f317e51544d
				tostring(errors.new());
			end);
		end);
	end);

	describe("extra", function ()
		it("keeps some extra fields", function ()
			local err = errors.new({condition="gone",text="Sorry mate, it's all gone",extra={uri="file:///dev/null"}});
			assert.is_table(err.extra);
			assert.equal("file:///dev/null", err.extra.uri);
		end);
	end)

	describe("init", function()
		it("basics works", function()
			local reg = errors.init("test", {
				broke = {type = "cancel"; condition = "internal-server-error"; text = "It broke :("};
				nope = {type = "auth"; condition = "not-authorized"; text = "Can't let you do that Dave"};
			});

			local broke = reg.new("broke");
			assert.equal("cancel", broke.type);
			assert.equal("internal-server-error", broke.condition);
			assert.equal("It broke :(", broke.text);
			assert.equal("test", broke.source);

			local nope = reg.new("nope");
			assert.equal("auth", nope.type);
			assert.equal("not-authorized", nope.condition);
			assert.equal("Can't let you do that Dave", nope.text);
		end);

		it("compact mode works", function()
			local reg = errors.init("test", "spec", {
				broke = {"cancel"; "internal-server-error"; "It broke :("};
				nope = {"auth"; "not-authorized"; "Can't let you do that Dave"; "sorry-dave"};
			});

			local broke = reg.new("broke");
			assert.equal("cancel", broke.type);
			assert.equal("internal-server-error", broke.condition);
			assert.equal("It broke :(", broke.text);
			assert.is_nil(broke.extra);

			local nope = reg.new("nope");
			assert.equal("auth", nope.type);
			assert.equal("not-authorized", nope.condition);
			assert.equal("Can't let you do that Dave", nope.text);
			assert.equal("spec", nope.extra.namespace);
			assert.equal("sorry-dave", nope.extra.condition);
		end);

		it("registry looks the same regardless of syntax", function()
			local normal = errors.init("test", {
				broke = {type = "cancel"; condition = "internal-server-error"; text = "It broke :("};
				nope = {
					type = "auth";
					condition = "not-authorized";
					text = "Can't let you do that Dave";
					extra = {namespace = "spec"; condition = "sorry-dave"};
				};
			});
			local compact1 = errors.init("test", "spec", {
				broke = {"cancel"; "internal-server-error"; "It broke :("};
				nope = {"auth"; "not-authorized"; "Can't let you do that Dave"; "sorry-dave"};
			});
			local compact2 = errors.init("test", {
				broke = {"cancel"; "internal-server-error"; "It broke :("};
				nope = {"auth"; "not-authorized"; "Can't let you do that Dave"};
			});
			assert.same(normal.registry, compact1.registry);

			assert.same({
				broke = {type = "cancel"; condition = "internal-server-error"; text = "It broke :("};
				nope = {type = "auth"; condition = "not-authorized"; text = "Can't let you do that Dave"};
			}, compact2.registry);
		end);

		describe(".wrap", function ()
			local reg = errors.init("test", "spec", {
				myerror = { "cancel", "internal-server-error", "Oh no" };
			});
			it("is exposed", function ()
				assert.is_function(reg.wrap);
			end);
			it("returns errors according to the registry", function ()
				local e = reg.wrap("myerror");
				assert.equal("cancel", e.type);
				assert.equal("internal-server-error", e.condition);
				assert.equal("Oh no", e.text);
			end);

			it("passes through existing errors", function ()
				local e = reg.wrap(reg.new({ type = "auth", condition = "forbidden" }));
				assert.equal("auth", e.type);
				assert.equal("forbidden", e.condition);
			end);

			it("wraps arbitrary values", function ()
				local e = reg.wrap(123);
				assert.equal("cancel", e.type);
				assert.equal("undefined-condition", e.condition);
				assert.equal(123, e.context.wrapped_error);
			end);
		end);

		describe(".coerce", function ()
			local reg = errors.init("test", "spec", {
				myerror = { "cancel", "internal-server-error", "Oh no" };
			});

			it("is exposed", function ()
				assert.is_function(reg.coerce);
			end);

			it("passes through existing errors", function ()
				local function test()
					return nil, errors.new({ type = "auth", condition = "forbidden" });
				end
				local ok, err = reg.coerce(test());
				assert.is_nil(ok);
				assert.is_truthy(errors.is_err(err));
				assert.equal("forbidden", err.condition);
			end);

			it("passes through successful return values", function ()
				local function test()
					return 1, 2, 3, 4;
				end
				local one, two, three, four = reg.coerce(test());
				assert.equal(1, one);
				assert.equal(2, two);
				assert.equal(3, three);
				assert.equal(4, four);
			end);

			it("wraps non-error objects", function ()
				local function test()
					return nil, "myerror";
				end
				local ok, err = reg.coerce(test());
				assert.is_nil(ok);
				assert.is_truthy(errors.is_err(err));
				assert.equal("internal-server-error", err.condition);
				assert.equal("Oh no", err.text);
			end);
		end);
	end);

end);