func (s *MySuite) TestAddition(c *C) { result := Add(2, 3) c.Assert(result, Equals, 5) }
func (s *MySuite) TestIsEven(c *C) { result := IsEven(4) c.Assert(result, Equals, true) }
func (s *MySuite) TestDivisionByZero(c *C) { _, err := Divide(10, 0) c.Assert(err, NotNil) }In all these examples, we can see that the package library being used is `check`. The `c` parameter is an instance of `*check.C` that provides a range of useful methods for performing testing in the Go language.