24 lines
933 B
JavaScript
24 lines
933 B
JavaScript
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// Flags: --expose-internals
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'use strict';
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require('../common');
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// These are tests that verify that the subnetmask is used
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// to create the correct CIDR address.
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// Tests that it returns null if the subnetmask is not in the correct format.
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// (ref: https://www.rfc-editor.org/rfc/rfc1878)
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const assert = require('node:assert');
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const { getCIDR } = require('internal/util');
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assert.strictEqual(getCIDR('127.0.0.1', '255.0.0.0', 'IPv4'), '127.0.0.1/8');
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assert.strictEqual(getCIDR('127.0.0.1', '255.255.0.0', 'IPv4'), '127.0.0.1/16');
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// 242 = 11110010(2)
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assert.strictEqual(getCIDR('127.0.0.1', '242.0.0.0', 'IPv4'), null);
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assert.strictEqual(getCIDR('::1', 'ffff:ffff:ffff:ffff::', 'IPv6'), '::1/64');
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assert.strictEqual(getCIDR('::1', 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff', 'IPv6'), '::1/128');
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// ff00:ffff = 11111111 00000000 : 11111111 11111111(2)
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assert.strictEqual(getCIDR('::1', 'ffff:ff00:ffff::', 'IPv6'), null);
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