Module starlark::assert[−][src]

Expand description

Utilities to test Starlark code execution, using the Assert type and top-level functions.

There are two general approaches. You can either use the functions in this module directly, e.g.:

use starlark::assert;
assert::eq("1+2", "3");

Or create an Assert object, which supports the same assertions, but also let’s you modify the environment in which the tests are run, e.g.:

use starlark::assert::Assert;
use starlark::syntax::Dialect;

let mut a = Assert::new();
a.dialect(&Dialect::Standard); // Use standard Starlark
a.eq("1+2", "3");

The tests in question may be run multiple times, in different modes, to maximise test coverage. For example, execution tests are run at different garbage collection settings. Parsing tests are run with both Unix and Windows newlines.