It's the second section in the name.
It specifies which case we're going to verify in the test including the details that make it relevant.
/** In this example the three sections of the name are in the same text.
* Airplane is the Unit under test
* The xxx refer to the other section
*/
test("Airplane, takeOff without parameters, xxx", () => {});
/** In this example the first section of the test name is in a group
* because there will be multiple tests on the same unit.
* The xxx refer to the other sections
*/
group("Airplane", () => {
group("takeOff without parameters, xxx", ()=>);
test("takeOff with isRaining parameter set to true, xxx", () => {});
});
