Some of Squish's functions raise catchable exceptions on failure. We can write our test scripts so that they can catch these exceptions and respond accordingly—for example, by recording a test failure in the test log.
The exception handling mechanism works the same way for each scripting language, no matter what function raised the exception, so we only need to look at one example to see how it is done.
try:
checkBox = waitForObject(":Make Payment.Check Signed_QCheckBox")
test.passes("Found the checkbox as expected")
except LookupError, err:
test.fail("Unexpectedly failed to find the checkbox", str(err))
try {
checkBox = waitForObject(":Make Payment.Check Signed_QCheckBox");
test.pass("Found the checkbox as expected");
} catch (err) {
test.fail("Unexpectedly failed to find the checkbox", err);
}
eval {
my $checkBox = waitForObject(":Make Payment.Check Signed_QCheckBox");
test::pass("Found the checkbox as expected");
};
test::fail("Unexpectedly failed to find the checkbox", "$@") if $@;
if {[catch {
set checkBox [waitForObject ":Make Payment.Check Signed_QCheckBox"]
} result]} {
test fail "Unexpectedly failed to find the checkbox" $result
} else {
test pass "Found the checkbox as expected"
}
The waitForObject function tries to find
the specified object. If the object is not accessible—perhaps
because it isn't visible—within the timeout period, the function
raises a catchable exception. In this example, we call the test.pass function if the object (a checkbox in
this example) is found within the timeout period, and the test.fail function if the object isn't found and
giving the exception (in string form) as the details text.
![[Note]](images/note.png) | Python-specific |
|---|---|
Notice that we must use the |