node/test/parallel/test-http-client-reject-unexpected-agent.js
Ruben Bridgewater e038d6a1cd
test: refactor common.expectsError
This completely refactors the `expectsError` behavior: so far it's
almost identical to `assert.throws(fn, object)` in case it was used
with a function as first argument. It had a magical property check
that allowed to verify a functions `type` in case `type` was passed
used in the validation object. This pattern is now completely removed
and `assert.throws()` should be used instead.

The main intent for `common.expectsError()` is to verify error cases
for callback based APIs. This is now more flexible by accepting all
validation possibilites that `assert.throws()` accepts as well. No
magical properties exist anymore. This reduces surprising behavior
for developers who are not used to the Node.js core code base.

This has the side effect that `common` is used significantly less
frequent.

PR-URL: https://github.com/nodejs/node/pull/31092
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
2019-12-31 15:54:20 +01:00

70 lines
1.4 KiB
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const http = require('http');
const baseOptions = {
method: 'GET',
port: undefined,
host: common.localhostIPv4,
};
const failingAgentOptions = [
true,
'agent',
{},
1,
() => null,
Symbol(),
];
const acceptableAgentOptions = [
false,
undefined,
null,
new http.Agent(),
];
const server = http.createServer((req, res) => {
res.end('hello');
});
let numberOfResponses = 0;
function createRequest(agent) {
const options = Object.assign(baseOptions, { agent });
const request = http.request(options);
request.end();
request.on('response', common.mustCall(() => {
numberOfResponses++;
if (numberOfResponses === acceptableAgentOptions.length) {
server.close();
}
}));
}
server.listen(0, baseOptions.host, common.mustCall(function() {
baseOptions.port = this.address().port;
failingAgentOptions.forEach((agent) => {
assert.throws(
() => createRequest(agent),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message: 'The "options.agent" property must be one of Agent-like ' +
'Object, undefined, or false.' +
common.invalidArgTypeHelper(agent)
}
);
});
acceptableAgentOptions.forEach((agent) => {
createRequest(agent);
});
}));
process.on('exit', () => {
assert.strictEqual(numberOfResponses, acceptableAgentOptions.length);
});