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refactor network helper for e2e tests

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This commit is contained in:
Igor Lobanov
2025-02-04 09:24:51 +01:00
parent 84130a6419
commit 9c692da2b7
1 changed files with 11 additions and 10 deletions
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21
client/tests/helpers/network.ts
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@@ -9,17 +9,20 @@ interface DHCPConfig {
}
const DEFAULT_SUBNET_MASK = '255.255.255.0';
const DEFAULT_SUBNET_MASK_OCTETS = DEFAULT_SUBNET_MASK.split('.').map(Number);
function checkIsIPv4(addr: NetworkInterfaceInfo): boolean {
return addr.family === 'IPv4' && !addr.internal;
}
function calculateNetwork(ip: number[], mask: number[]): number[] {
// Calculate the network address by applying the bitwise AND operation.
// eslint-disable-next-line no-bitwise
return ip.map((octet, i) => octet & mask[i]);
}
function calculateBroadcast(network: number[], mask: number[]): number[] {
// Calculate the broadcast address by ORing the network address with the inverted mask.
// eslint-disable-next-line no-bitwise
return network.map((octet, i) => octet | (~mask[i] & 255));
}
@@ -27,30 +30,28 @@ function calculateBroadcast(network: number[], mask: number[]): number[] {
export function getDHCPConfig(): DHCPConfig {
const interfaces = networkInterfaces();
// Select the first interface that has a valid non-internal IPv4 address.
const ipV4Interface = Object.entries(interfaces)
.map(([name, addresses]) => ({
name,
addresses,
}))
.find((i) => {
return i.addresses?.some((addr) => checkIsIPv4(addr));
});
.map(([name, addresses]) => ({ name, addresses }))
.find((i) => i.addresses?.some(checkIsIPv4));
if (!ipV4Interface) {
throw new Error('No suitable network interface found');
}
const ipv4Address = ipV4Interface.addresses.find((addr) => checkIsIPv4(addr));
// Get the first valid IPv4 address from the interface.
const ipv4Address = ipV4Interface.addresses.find(checkIsIPv4);
const ip = ipv4Address.address.split('.').map(Number);
const mask = ipv4Address.netmask?.split('.').map(Number) || DEFAULT_SUBNET_MASK.split('.');
const mask = ipv4Address.netmask?.split('.').map(Number) || DEFAULT_SUBNET_MASK_OCTETS;
const network = calculateNetwork(ip, mask);
// Calculate first and last usable addresses (excluding network and broadcast)
// Calculate first usable address (network address + 1)
const rangeStart = [...network];
rangeStart[3] = network[3] + 1;
// Calculate broadcast address and then the last usable address (broadcast - 1)
const broadcast = calculateBroadcast(network, mask);
const rangeEnd = [...broadcast];
rangeEnd[3] = broadcast[3] - 1;