throw exception, if url is not string or object

index.js

@@ -25,6 +25,10 @@ util.inherits(GotError, NestedErrorStacks);
 GotError.prototype.name = 'GotError';
 
 function got(url, opts, cb) {
+	if (typeof url !== 'string' && !(url instanceof Object)) {
+		throw new GotError('Parameter \'url\' must be a string or object, not ' + typeof url);
+	}
+
 	if (typeof opts === 'function') {
 		cb = opts;
 		opts = {};

test/test-arguments.js

@@ -18,6 +18,13 @@ tape('setup', function (t) {
 	});
 });
 
+tape('url argument is required', function (t) {
+	t.throws(function () {
+		got();
+	}, /Parameter 'url' must be a string or object, not undefined/);
+	t.end();
+});
+
 tape('accepts url.parse object as first argument', function (t) {
 	got({host: s.host, port: s.port, path: '/test'}, function (err, data) {
 		t.error(err);
@@ -34,6 +41,14 @@ tape('extends parsed string with opts', function (t) {
 	});
 });
 
+tape('extends parsed string with opts', function (t) {
+	got(s.url + '/?test=doge', {query: {test: 'wow'}}, function (err, data) {
+		t.error(err);
+		t.equal(data, '/?test=wow');
+		t.end();
+	});
+});
+
 tape('cleanup', function (t) {
 	s.close();
 	t.end();