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common.mustCall() is added #34920

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common.mustCall() is added #34920

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bfcad47
code:commom.mustCall() is added for the callbacks net.createServer() and
PoojaDurgad Aug 25, 2020
79a7ea6
code:syntax error cleared
PoojaDurgad Aug 25, 2020
67f1278
code: common.mustcall() modified
PoojaDurgad Aug 25, 2020
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8 changes: 4 additions & 4 deletions test/sequential/test-net-response-size.js
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Original file line number Diff line number Diff line change
Expand Up @@ -32,19 +32,19 @@ const cp = require('child_process');
if (process.argv[2] === 'server') {
// Server

const server = net.createServer(function(conn) {
const server = net.createServer(common.mustCall(function(conn) {
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This gives a false sense of security. This is a child process and if the child process fails, it doesn't affect the test. You can see this if you add a 2 as the second argument to common.mustCall() so that it causes an assertion. It will print the assertion message, but the test still passes.

$ ./node test/sequential/test-net-response-size.js
Server running.
server received 65536 bytes
server received 36864 bytes
server received 1 bytes
Mismatched <anonymous> function calls. Expected exactly 2, actual 1.
    at Proxy.mustCall (/Users/trott/io.js/test/common/index.js:329:10)
    at Object.<anonymous> (/Users/trott/io.js/test/sequential/test-net-response-size.js:35:42)
    at Module._compile (internal/modules/cjs/loader.js:1090:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1111:10)
    at Module.load (internal/modules/cjs/loader.js:955:32)
    at Function.Module._load (internal/modules/cjs/loader.js:796:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47
$ tools/test.py test/sequential/test-net-response-size.js
[00:01|% 100|+   1|-   0]: Done                          
$

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I understand that this is not so useful because common.mustcall() is enclosed in child process. Thanks for the replay and I will close the PR.

conn.on('data', function(data) {
console.log(`server received ${data.length} bytes`);
});

conn.on('close', function() {
server.close();
});
});
}));

server.listen(common.PORT, '127.0.0.1', function() {
server.listen(common.PORT, '127.0.0.1', common.mustCall(function() {
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Same problem as above.

$ ./node test/sequential/test-net-response-size.js       
Server running.
server received 65536 bytes
server received 36864 bytes
server received 1 bytes
Mismatched <anonymous> function calls. Expected exactly 2, actual 1.
    at Proxy.mustCall (/Users/trott/io.js/test/common/index.js:329:10)
    at Object.<anonymous> (/Users/trott/io.js/test/sequential/test-net-response-size.js:45:50)
    at Module._compile (internal/modules/cjs/loader.js:1090:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1111:10)
    at Module.load (internal/modules/cjs/loader.js:955:32)
    at Function.Module._load (internal/modules/cjs/loader.js:796:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47
$ tools/test.py test/sequential/test-net-response-size.js
[00:01|% 100|+   1|-   0]: Done                          
$

console.log('Server running.');
});
}));

} else {
// Client
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