diff --git a/package.json b/package.json
index 7fa176ee..345ad299 100644
--- a/package.json
+++ b/package.json
@@ -41,13 +41,14 @@
     "socket.io": "1.4.5"
   },
   "devDependencies": {
-    "stylelint": "4.3.3",
+    "chai": "3.5.0",
     "eslint": "2.3.0",
     "grunt": "0.4.5",
     "grunt-cli": "0.1.13",
     "grunt-contrib-uglify": "0.11.1",
     "grunt-contrib-watch": "0.6.1",
     "handlebars": "4.0.5",
-    "mocha": "2.4.5"
+    "mocha": "2.4.5",
+    "stylelint": "4.3.3"
   }
 }
diff --git a/test/models/chan.js b/test/models/chan.js
new file mode 100644
index 00000000..d6e42714
--- /dev/null
+++ b/test/models/chan.js
@@ -0,0 +1,80 @@
+"use strict";
+
+var expect = require("chai").expect;
+
+var Chan = require("../../src/models/chan");
+var User = require("../../src/models/user");
+
+function makeUser(name, mode) {
+	return new User({name: name, mode: mode});
+}
+
+function getUserNames(chan) {
+	return chan.users.map(function(u) { return u.name; });
+}
+
+describe("Chan", function() {
+	describe("#sortUsers()", function() {
+
+		it("should sort a simple user list", function() {
+			var chan = new Chan({users: [
+				"JocelynD", "YaManicKill", "astorije", "xPaw", "Max-P"
+			].map(makeUser)});
+			chan.sortUsers();
+
+			expect(getUserNames(chan)).to.deep.equal([
+				"astorije", "JocelynD", "Max-P", "xPaw", "YaManicKill"
+			]);
+		});
+
+		it("should group users by modes", function() {
+			var chan = new Chan({users: [
+				new User({name: "JocelynD", mode: "&"}),
+				new User({name: "YaManicKill", mode: "+"}),
+				new User({name: "astorije", mode: "%"}),
+				new User({name: "xPaw", mode: "~"}),
+				new User({name: "Max-P", mode: "@"}),
+			]});
+			chan.sortUsers();
+
+			expect(getUserNames(chan)).to.deep.equal([
+				"xPaw", "JocelynD", "Max-P", "astorije", "YaManicKill"
+			]);
+		});
+
+		it("should sort a mix of users and modes", function() {
+			var chan = new Chan({users: [
+				new User({name: "JocelynD"}),
+				new User({name: "YaManicKill", mode: "@"}),
+				new User({name: "astorije"}),
+				new User({name: "xPaw"}),
+				new User({name: "Max-P", mode: "@"}),
+			]});
+			chan.sortUsers();
+
+			expect(getUserNames(chan)).to.deep.equal(
+				["Max-P", "YaManicKill", "astorije", "JocelynD", "xPaw"]
+			);
+		});
+
+		it("should be case-insensitive", function() {
+			var chan = new Chan({users: ["aB", "Ad", "AA", "ac"].map(makeUser)});
+			chan.sortUsers();
+
+			expect(getUserNames(chan)).to.deep.equal(["AA", "aB", "ac", "Ad"]);
+		});
+
+		it("should parse special characters successfully", function() {
+			var chan = new Chan({users: [
+				"[foo", "]foo", "(foo)", "{foo}", "<foo>", "_foo", "@foo", "^foo",
+				"&foo", "!foo", "+foo", "Foo"
+			].map(makeUser)});
+			chan.sortUsers();
+
+			expect(getUserNames(chan)).to.deep.equal([
+				"!foo", "&foo", "(foo)", "+foo", "<foo>", "@foo", "[foo", "]foo",
+				"^foo", "_foo", "Foo", "{foo}"
+			]);
+		});
+	});
+});