Testing Experience – the Magazine for professional testers
Creating test framefork using PowerShell
Sometimes you need to test using PowerShell. The first thing to create assertion function. Below an example of implementation:
function Assert-Equals(
$expected = $(throw "Please, specify the expected object"),
$actual = $(throw "Please, specify the actual object"),
[string] $message = "Assertion failed." )
{
if(-not ($expected -eq $actual))
{
throw "FAIL. Expected: $expected. Actual: $actual. $message"
}
}
To be continued…
Selenium Web Driver: some tricks using Python
After migrating to Web Driver it took time to get with the following things:
* Selecting element from drop down list (now not just select command), e.g.:
el = driver.find_element_by_id('id_line')
for option in el.find_elements_by_tag_name('option'):
if option.text == "line to select":
option.click()
break
* If there are lot of element existence checks that wrapped in try-catch block it is useful to reduce implicit timeout to reduce overall test execution time, e.g. for Firefox driver:
def setUp(self):
self.driver = webdriver.Firefox()
self.driver.implicitly_wait(5)
self.verificationErrors = []
* Try to avoid time.sleep(N) commands in tests it is better to wait for some action or change in system. So the best way to make construction:
try:
if self.is_element_present(By.CSS_SELECTOR, "h3 > strong"):
driver.find_element_by_link_text("169_convertedvideo_425").click()
self.assertTrue(int(driver.find_elements_by_css_selector("#video_source span.black")[0].text) >= 0)
else:
raise Exception(self.id() + ".ErrorText!")
except Exception as e: self.verificationErrors.append(str(e))
finally:
self.removeAllMonitoringSources(driver)
or wait by small ticks:
for i in range(60):
try:
if self.is_element_present(By.LINK_TEXT, "Exit"): break
except: pass
time.sleep(1)
else: self.fail("time out")
* Xpath is always slower in IE
* If some elements in DOM are hidden you can access them using JavaScript execution command driver.execute_script(script, *args)
Windows: Installing Python and Selenium
Image via Wikipedia
To install Python and Selenium you need to follow the list bellow:
- Install Python (2.7.x version)
- Add python home to path
- Add python home /scripts dir to path
- Install pip . Pip is a tool for installing and managing Python packages pip is a replacement for easy_install
- Install Selenium
XSS: Pay attention to input validation
“Experience shows that test cases that explore boundary conditions
have a higher payoff than test cases that do not.”
The art of software testing. Glenford J. Myers
Recently I was asked to look through a website to find undetected bugs with fresh pair of eyes.
First of all I decided to pay attention to boundary value analysis and I was rewarded. Since there were plenty of forms on pages it was detected:
- in the most inputs there were no boundary check (one could put value of any length that caused SQL error)
- no input data validation (phone number format, e-mail format, incorrect values and so on)
- and the most harmful was XSS
