Tweak test timeouts to reduce flakiness

Author: novemberborn

test/test-try-commit.js

@@ -547,12 +547,13 @@ test('try-commit fails when it exceeds its own timeout', async t => {
 test('try-commit refreshes the timeout on commit/discard', async t => {
 const ava = newAva();
 const result1 = await ava.cb(a => {
-a.timeout(100);
+// Note: Allow for long enough timeouts that the promise tasks execute in time.
+a.timeout(2e3);
 a.plan(3);
-setTimeout(() => a.try(b => b.pass()).then(result => result.commit()), 50);
-setTimeout(() => a.try(b => b.pass()).then(result => result.commit()), 100);
-setTimeout(() => a.try(b => b.pass()).then(result => result.commit()), 150);
-setTimeout(() => a.end(), 200);
+setTimeout(() => a.try(b => b.pass()).then(result => result.commit()), 1e3);
+setTimeout(() => a.try(b => b.pass()).then(result => result.commit()), 2e3);
+setTimeout(() => a.try(b => b.pass()).then(result => result.commit()), 3e3);
+setTimeout(() => a.end(), 4e3);
 }).run();
 
 t.is(result1.passed, true);