Source code
Revision control
Copy as Markdown
Other Tools
// Helper for testing assertion failure cases for a testharness.js API
//
// The `assert_throws_*` functions cannot be used for this purpose because they
// always fail in response to AssertionError exceptions, even when this is
// expressed as the expected error.
function test_failure(fn, name) {
test(function() {
try {
fn();
} catch (err) {
if (err instanceof AssertionError) {
return;
}
throw new AssertionError('Expected an AssertionError, but' + err);
}
throw new AssertionError(
'Expected an AssertionError, but no error was thrown'
);
}, name);
}