add failing test to check RelativeLocator#near accept single int

Author: pinterior

Diff for: py/test/selenium/webdriver/support/relative_by_tests.py

@@ -89,6 +89,13 @@ def test_no_such_element_is_raised_rather_than_index_error(driver, pages):
     assert "Cannot locate relative element with: {'id': 'nonexistentid'}" in exc.value.msg
 
 
+# this test will fail with InvalidArgumentException
+def test_near_locator_should_accept_single_int(driver, pages):
+    pages.load("relative_locators.html")
+
+    driver.find_element(locate_with(By.ID, "rect2").near(123))
+
+
 def test_near_locator_should_find_near_elements(driver, pages):
     pages.load("relative_locators.html")
     rect1 = driver.find_element(By.ID, "rect1")