t.throwsAsync fails when throwing Errors

[bunysae]

Actual behavior
When i try to execute the following tests,

test('should throw error (sinon stub)', async t => {
        const error = new Error('a');
        const stub = require('sinon').stub();
        stub.throws(error);
        const afunc = async () => {
                return stub();
        };
        t.throwsAsync(await afunc());
});

async function error(){
        throw new Error('a');
}

test('should throw error', async t => {
        const afunc = async () => {
                return await error();
        };
        t.throwsAsync(await afunc())
});

i get the error

Rejected promise returned by test. Reason:

  Error {
    message: 'a',
  }

Expected behavior
The tests should pass.

Environment

• AVA: 3.3.0
• Node.js: v12.10.0
• System: SuSe Linux

[novemberborn]

t.throwsAsync(await afunc());

You're awaiting afunc() before throwsAsync() is called.

Change to:

await t.throwsAsync(afunc());