test: remove assert.doesNotThrow()

There is actually no reason to use `assert.doesNotThrow()` in the
tests. If a test throws, just let the error bubble up right away
instead of first catching it and then rethrowing it.

PR-URL: nodejs#18669
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

test/addons-napi/test_general/test.js

@@ -81,7 +81,7 @@ const y = {};
 test_general.wrap(y);
 test_general.removeWrap(y);
 // Wrapping twice succeeds if a remove_wrap() separates the instances
-assert.doesNotThrow(() => test_general.wrap(y));
+test_general.wrap(y);
 
 // Ensure that removing a wrap and garbage collecting does not fire the
 // finalize callback.

test/addons/symlinked-module/test.js

@@ -30,5 +30,5 @@ const sub = require('./submodule');
   const mod = require(path.join(i, 'binding.node'));
   assert.notStrictEqual(mod, null);
   assert.strictEqual(mod.hello(), 'world');
-  assert.doesNotThrow(() => sub.test(i));
+  sub.test(i);
 });

test/internet/test-dgram-membership.js

@@ -10,7 +10,7 @@ const setup = dgram.createSocket.bind(dgram, { type: 'udp4', reuseAddr: true });
 // addMembership() with valid socket and multicast address should not throw
 {
   const socket = setup();
-  assert.doesNotThrow(() => { socket.addMembership(multicastAddress); });
+  socket.addMembership(multicastAddress);
   socket.close();
 }
 
@@ -27,11 +27,7 @@ const setup = dgram.createSocket.bind(dgram, { type: 'udp4', reuseAddr: true });
 // dropMembership() after addMembership() should not throw
 {
   const socket = setup();
-  assert.doesNotThrow(
-    () => {
-      socket.addMembership(multicastAddress);
-      socket.dropMembership(multicastAddress);
-    }
-  );
+  socket.addMembership(multicastAddress);
+  socket.dropMembership(multicastAddress);
   socket.close();
 }

test/internet/test-dns.js

@@ -580,14 +580,10 @@ process.on('exit', function() {
 });
 
 
-assert.doesNotThrow(() =>
-  dns.lookup(addresses.INET6_HOST, 6, common.mustCall()));
+dns.lookup(addresses.INET6_HOST, 6, common.mustCall());
 
-assert.doesNotThrow(() =>
-  dns.lookup(addresses.INET_HOST, {}, common.mustCall()));
+dns.lookup(addresses.INET_HOST, {}, common.mustCall());
 
-assert.doesNotThrow(() =>
-  dns.lookupService('0.0.0.0', '0', common.mustCall()));
+dns.lookupService('0.0.0.0', '0', common.mustCall());
 
-assert.doesNotThrow(() =>
-  dns.lookupService('0.0.0.0', 0, common.mustCall()));
+dns.lookupService('0.0.0.0', 0, common.mustCall());

test/parallel/test-assert-checktag.js

@@ -30,8 +30,8 @@ function re(literals, ...values) {
   FakeDate.prototype = Date.prototype;
   const fake = new FakeDate();
 
-  assert.doesNotThrow(() => assert.deepEqual(date, fake));
-  assert.doesNotThrow(() => assert.deepEqual(fake, date));
+  assert.deepEqual(date, fake);
+  assert.deepEqual(fake, date);
 
   // For deepStrictEqual we check the runtime type,
   // then reveal the fakeness of the fake date
@@ -47,7 +47,7 @@ function re(literals, ...values) {
   for (const prop of Object.keys(global)) {
     fakeGlobal[prop] = global[prop];
   }
-  assert.doesNotThrow(() => assert.deepEqual(fakeGlobal, global));
+  assert.deepEqual(fakeGlobal, global);
   // Message will be truncated anyway, don't validate
   assert.throws(() => assert.deepStrictEqual(fakeGlobal, global),
                 assert.AssertionError);
@@ -59,7 +59,7 @@ function re(literals, ...values) {
   for (const prop of Object.keys(process)) {
     fakeProcess[prop] = process[prop];
   }
-  assert.doesNotThrow(() => assert.deepEqual(fakeProcess, process));
+  assert.deepEqual(fakeProcess, process);
   // Message will be truncated anyway, don't validate
   assert.throws(() => assert.deepStrictEqual(fakeProcess, process),
                 assert.AssertionError);

test/parallel/test-assert-deep.js

@@ -34,23 +34,23 @@ const buf = Buffer.from(arr);
 // They have different [[Prototype]]
 assert.throws(() => assert.deepStrictEqual(arr, buf),
               re`${arr} deepStrictEqual ${buf}`);
-assert.doesNotThrow(() => assert.deepEqual(arr, buf));
+assert.deepEqual(arr, buf);
 
 {
   const buf2 = Buffer.from(arr);
   buf2.prop = 1;
 
   assert.throws(() => assert.deepStrictEqual(buf2, buf),
                 re`${buf2} deepStrictEqual ${buf}`);
-  assert.doesNotThrow(() => assert.deepEqual(buf2, buf));
+  assert.deepEqual(buf2, buf);
 }
 
 {
   const arr2 = new Uint8Array([120, 121, 122, 10]);
   arr2.prop = 5;
   assert.throws(() => assert.deepStrictEqual(arr, arr2),
                 re`${arr} deepStrictEqual ${arr2}`);
-  assert.doesNotThrow(() => assert.deepEqual(arr, arr2));
+  assert.deepEqual(arr, arr2);
 }
 
 const date = new Date('2016');
@@ -66,8 +66,8 @@ const date2 = new MyDate('2016');
 
 // deepEqual returns true as long as the time are the same,
 // but deepStrictEqual checks own properties
-assert.doesNotThrow(() => assert.deepEqual(date, date2));
-assert.doesNotThrow(() => assert.deepEqual(date2, date));
+assert.deepEqual(date, date2);
+assert.deepEqual(date2, date);
 assert.throws(() => assert.deepStrictEqual(date, date2),
               re`${date} deepStrictEqual ${date2}`);
 assert.throws(() => assert.deepStrictEqual(date2, date),
@@ -85,7 +85,7 @@ const re2 = new MyRegExp('test');
 
 // deepEqual returns true as long as the regexp-specific properties
 // are the same, but deepStrictEqual checks all properties
-assert.doesNotThrow(() => assert.deepEqual(re1, re2));
+assert.deepEqual(re1, re2);
 assert.throws(() => assert.deepStrictEqual(re1, re2),
               re`${re1} deepStrictEqual ${re2}`);
 
@@ -148,11 +148,11 @@ function assertNotDeepOrStrict(a, b, err) {
 }
 
 function assertOnlyDeepEqual(a, b, err) {
-  assert.doesNotThrow(() => assert.deepEqual(a, b));
+  assert.deepEqual(a, b);
   assert.throws(() => assert.deepStrictEqual(a, b), err ||
                 re`${a} deepStrictEqual ${b}`);
 
-  assert.doesNotThrow(() => assert.deepEqual(b, a));
+  assert.deepEqual(b, a);
   assert.throws(() => assert.deepStrictEqual(b, a), err ||
                 re`${b} deepStrictEqual ${a}`);
 }
@@ -492,10 +492,9 @@ assertOnlyDeepEqual([1, , , 3], [1, , , 3, , , ]);
 
 // Handle NaN
 assert.throws(() => { assert.deepEqual(NaN, NaN); }, assert.AssertionError);
-assert.doesNotThrow(() => { assert.deepStrictEqual(NaN, NaN); });
-assert.doesNotThrow(() => { assert.deepStrictEqual({ a: NaN }, { a: NaN }); });
-assert.doesNotThrow(
-  () => { assert.deepStrictEqual([ 1, 2, NaN, 4 ], [ 1, 2, NaN, 4 ]); });
+{ assert.deepStrictEqual(NaN, NaN); }
+{ assert.deepStrictEqual({ a: NaN }, { a: NaN }); }
+assert.deepStrictEqual([ 1, 2, NaN, 4 ], [ 1, 2, NaN, 4 ]);
 
 // Handle boxed primitives
 {
@@ -547,9 +546,7 @@ assertDeepAndStrictEqual(-0, -0);
   assertDeepAndStrictEqual(a, b);
 }
 
-assert.doesNotThrow(
-  () => assert.deepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14)),
-  'deepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14))');
+assert.deepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14));
 
 assert.throws(() => assert.deepEqual(new Date(), new Date(2000, 3, 14)),
               AssertionError,
@@ -561,16 +558,13 @@ assert.throws(
   'notDeepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14))'
 );
 
-assert.doesNotThrow(
-  () => assert.notDeepEqual(new Date(), new Date(2000, 3, 14)),
-  'notDeepEqual(new Date(), new Date(2000, 3, 14))'
-);
+assert.notDeepEqual(new Date(), new Date(2000, 3, 14));
 
-assert.doesNotThrow(() => assert.deepEqual(/a/, /a/));
-assert.doesNotThrow(() => assert.deepEqual(/a/g, /a/g));
-assert.doesNotThrow(() => assert.deepEqual(/a/i, /a/i));
-assert.doesNotThrow(() => assert.deepEqual(/a/m, /a/m));
-assert.doesNotThrow(() => assert.deepEqual(/a/igm, /a/igm));
+assert.deepEqual(/a/, /a/);
+assert.deepEqual(/a/g, /a/g);
+assert.deepEqual(/a/i, /a/i);
+assert.deepEqual(/a/m, /a/m);
+assert.deepEqual(/a/igm, /a/igm);
 assert.throws(() => assert.deepEqual(/ab/, /a/),
               {
                 code: 'ERR_ASSERTION',
@@ -605,23 +599,23 @@ assert.throws(() => assert.deepEqual(/a/igm, /a/im),
 {
   const re1 = /a/g;
   re1.lastIndex = 3;
-  assert.doesNotThrow(() => assert.deepEqual(re1, /a/g));
+  assert.deepEqual(re1, /a/g);
 }
 
-assert.doesNotThrow(() => assert.deepEqual(4, '4'), 'deepEqual(4, \'4\')');
-assert.doesNotThrow(() => assert.deepEqual(true, 1), 'deepEqual(true, 1)');
+assert.deepEqual(4, '4');
+assert.deepEqual(true, 1);
 assert.throws(() => assert.deepEqual(4, '5'),
               AssertionError,
               'deepEqual( 4, \'5\')');
 
 // Having the same number of owned properties && the same set of keys.
-assert.doesNotThrow(() => assert.deepEqual({ a: 4 }, { a: 4 }));
-assert.doesNotThrow(() => assert.deepEqual({ a: 4, b: '2' }, { a: 4, b: '2' }));
-assert.doesNotThrow(() => assert.deepEqual([4], ['4']));
+assert.deepEqual({ a: 4 }, { a: 4 });
+assert.deepEqual({ a: 4, b: '2' }, { a: 4, b: '2' });
+assert.deepEqual([4], ['4']);
 assert.throws(
   () => assert.deepEqual({ a: 4 }, { a: 4, b: true }), AssertionError);
-assert.doesNotThrow(() => assert.deepEqual(['a'], { 0: 'a' }));
-assert.doesNotThrow(() => assert.deepEqual({ a: 4, b: '1' }, { b: '1', a: 4 }));
+assert.deepEqual(['a'], { 0: 'a' });
+assert.deepEqual({ a: 4, b: '1' }, { b: '1', a: 4 });
 const a1 = [1, 2, 3];
 const a2 = [1, 2, 3];
 a1.a = 'test';
@@ -630,7 +624,7 @@ a2.b = true;
 a2.a = 'test';
 assert.throws(() => assert.deepEqual(Object.keys(a1), Object.keys(a2)),
               AssertionError);
-assert.doesNotThrow(() => assert.deepEqual(a1, a2));
+assert.deepEqual(a1, a2);
 
 // Having an identical prototype property.
 const nbRoot = {
@@ -654,11 +648,11 @@ nameBuilder2.prototype = nbRoot;
 const nb1 = new nameBuilder('Ryan', 'Dahl');
 let nb2 = new nameBuilder2('Ryan', 'Dahl');
 
-assert.doesNotThrow(() => assert.deepEqual(nb1, nb2));
+assert.deepEqual(nb1, nb2);
 
 nameBuilder2.prototype = Object;
 nb2 = new nameBuilder2('Ryan', 'Dahl');
-assert.doesNotThrow(() => assert.deepEqual(nb1, nb2));
+assert.deepEqual(nb1, nb2);
 
 // Primitives and object.
 assert.throws(() => assert.deepEqual(null, {}), AssertionError);
@@ -670,21 +664,15 @@ assert.throws(() => assert.deepEqual(true, {}), AssertionError);
 assert.throws(() => assert.deepEqual(Symbol(), {}), AssertionError);
 
 // Primitive wrappers and object.
-assert.doesNotThrow(() => assert.deepEqual(new String('a'), ['a']),
-                    AssertionError);
-assert.doesNotThrow(() => assert.deepEqual(new String('a'), { 0: 'a' }),
-                    AssertionError);
-assert.doesNotThrow(() => assert.deepEqual(new Number(1), {}), AssertionError);
-assert.doesNotThrow(() => assert.deepEqual(new Boolean(true), {}),
-                    AssertionError);
+assert.deepEqual(new String('a'), ['a']);
+assert.deepEqual(new String('a'), { 0: 'a' });
+assert.deepEqual(new Number(1), {});
+assert.deepEqual(new Boolean(true), {});
 
 // Same number of keys but different key names.
 assert.throws(() => assert.deepEqual({ a: 1 }, { b: 1 }), AssertionError);
 
-assert.doesNotThrow(
-  () => assert.deepStrictEqual(new Date(2000, 3, 14), new Date(2000, 3, 14)),
-  'deepStrictEqual(new Date(2000, 3, 14), new Date(2000, 3, 14))'
-);
+assert.deepStrictEqual(new Date(2000, 3, 14), new Date(2000, 3, 14));
 
 assert.throws(
   () => assert.deepStrictEqual(new Date(), new Date(2000, 3, 14)),
@@ -698,16 +686,13 @@ assert.throws(
   'notDeepStrictEqual(new Date(2000, 3, 14), new Date(2000, 3, 14))'
 );
 
-assert.doesNotThrow(
-  () => assert.notDeepStrictEqual(new Date(), new Date(2000, 3, 14)),
-  'notDeepStrictEqual(new Date(), new Date(2000, 3, 14))'
-);
+assert.notDeepStrictEqual(new Date(), new Date(2000, 3, 14));
 
-assert.doesNotThrow(() => assert.deepStrictEqual(/a/, /a/));
-assert.doesNotThrow(() => assert.deepStrictEqual(/a/g, /a/g));
-assert.doesNotThrow(() => assert.deepStrictEqual(/a/i, /a/i));
-assert.doesNotThrow(() => assert.deepStrictEqual(/a/m, /a/m));
-assert.doesNotThrow(() => assert.deepStrictEqual(/a/igm, /a/igm));
+assert.deepStrictEqual(/a/, /a/);
+assert.deepStrictEqual(/a/g, /a/g);
+assert.deepStrictEqual(/a/i, /a/i);
+assert.deepStrictEqual(/a/m, /a/m);
+assert.deepStrictEqual(/a/igm, /a/igm);
 assert.throws(
   () => assert.deepStrictEqual(/ab/, /a/),
   {
@@ -747,7 +732,7 @@ assert.throws(
 {
   const re1 = /a/;
   re1.lastIndex = 3;
-  assert.doesNotThrow(() => assert.deepStrictEqual(re1, /a/));
+  assert.deepStrictEqual(re1, /a/);
 }
 
 assert.throws(() => assert.deepStrictEqual(4, '4'),
@@ -763,9 +748,8 @@ assert.throws(() => assert.deepStrictEqual(4, '5'),
               'deepStrictEqual(4, \'5\')');
 
 // Having the same number of owned properties && the same set of keys.
-assert.doesNotThrow(() => assert.deepStrictEqual({ a: 4 }, { a: 4 }));
-assert.doesNotThrow(
-  () => assert.deepStrictEqual({ a: 4, b: '2' }, { a: 4, b: '2' }));
+assert.deepStrictEqual({ a: 4 }, { a: 4 });
+assert.deepStrictEqual({ a: 4, b: '2' }, { a: 4, b: '2' });
 assert.throws(() => assert.deepStrictEqual([4], ['4']),
               {
                 code: 'ERR_ASSERTION',
@@ -787,14 +771,13 @@ assert.throws(() => assert.deepStrictEqual(['a'], { 0: 'a' }),
 
 /* eslint-enable */
 
-assert.doesNotThrow(
-  () => assert.deepStrictEqual({ a: 4, b: '1' }, { b: '1', a: 4 }));
+assert.deepStrictEqual({ a: 4, b: '1' }, { b: '1', a: 4 });
 
 assert.throws(
   () => assert.deepStrictEqual([0, 1, 2, 'a', 'b'], [0, 1, 2, 'b', 'a']),
   AssertionError);
 
-assert.doesNotThrow(() => assert.deepStrictEqual(a1, a2));
+assert.deepStrictEqual(a1, a2);
 
 // Prototype check.
 function Constructor1(first, last) {
@@ -815,7 +798,7 @@ assert.throws(() => assert.deepStrictEqual(obj1, obj2), AssertionError);
 Constructor2.prototype = Constructor1.prototype;
 obj2 = new Constructor2('Ryan', 'Dahl');
 
-assert.doesNotThrow(() => assert.deepStrictEqual(obj1, obj2));
+assert.deepStrictEqual(obj1, obj2);
 
 // primitives
 assert.throws(() => assert.deepStrictEqual(4, '4'), AssertionError);
@@ -824,7 +807,7 @@ assert.throws(() => assert.deepStrictEqual(Symbol(), Symbol()),
               AssertionError);
 
 const s = Symbol();
-assert.doesNotThrow(() => assert.deepStrictEqual(s, s));
+assert.deepStrictEqual(s, s);
 
 // Primitives and object.
 assert.throws(() => assert.deepStrictEqual(null, {}), AssertionError);

test/parallel/test-assert-if-error.js

@@ -67,9 +67,9 @@ assert.throws(
   }
 );
 
-assert.doesNotThrow(() => { assert.ifError(null); });
-assert.doesNotThrow(() => { assert.ifError(); });
-assert.doesNotThrow(() => { assert.ifError(undefined); });
+assert.ifError(null);
+assert.ifError();
+assert.ifError(undefined);
 
 // https://github.com/nodejs/node-v0.x-archive/issues/2893
 {