util.error: Add tests

spec/util_error_spec.lua

@@ -0,0 +1,68 @@
+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",
+					};
+				};
+				local err = errors.new("fail", { traceback = "in some file, somewhere" }, templates);
+				assert.equal("wait", err.type);
+				assert.equal("internal-server-error", err.condition);
+				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");
+			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);
+		end);
+	end);
+
+	describe("__tostring", function ()
+		it("doesn't throw", function ()
+			assert.has_no.errors(function ()
+				-- See 6f317e51544d
+				tostring(errors.new());
+			end);
+		end);
+	end);
+
+end);
+