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nodejs/test/parallel/test-zlib-failed-init.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

47 lines
1.1 KiB
JavaScript

'use strict';
require('../common');
const assert = require('assert');
const zlib = require('zlib');
assert.throws(
() => zlib.createGzip({ chunkSize: 0 }),
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "options.chunkSize" is out of range. It must ' +
'be >= 64. Received 0'
}
);
assert.throws(
() => zlib.createGzip({ windowBits: 0 }),
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "options.windowBits" is out of range. It must ' +
'be >= 8 and <= 15. Received 0'
}
);
assert.throws(
() => zlib.createGzip({ memLevel: 0 }),
{
code: 'ERR_OUT_OF_RANGE',
name: 'RangeError',
message: 'The value of "options.memLevel" is out of range. It must ' +
'be >= 1 and <= 9. Received 0'
}
);
{
const stream = zlib.createGzip({ level: NaN });
assert.strictEqual(stream._level, zlib.constants.Z_DEFAULT_COMPRESSION);
}
{
const stream = zlib.createGzip({ strategy: NaN });
assert.strictEqual(stream._strategy, zlib.constants.Z_DEFAULT_STRATEGY);
}