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/**
* Unit test to verify that 'retryOnNetworkError' works correctly for common network connection
* issues.
*/
(function() {
"use strict";
let node = MongoRunner.runMongod();
let hostname = node.host;
jsTestLog("Test connecting to a healthy node.");
let numRetries = 5;
let sleepMs = 50;
let attempts = 0;
retryOnNetworkError(function() {
attempts++;
new Mongo(hostname);
}, numRetries, sleepMs);
assert.eq(attempts, 1);
jsTestLog("Test connecting to a node that is down.");
MongoRunner.stopMongod(node);
attempts = 0;
try {
retryOnNetworkError(function() {
attempts++;
new Mongo(hostname);
}, numRetries, sleepMs);
} catch (e) {
jsTestLog("Caught exception after exhausting retries: " + e);
}
assert.eq(attempts, numRetries + 1);
jsTestLog("Test connecting to a node with an invalid hostname.");
let invalidHostname = "very-invalid-host-name";
attempts = 0;
try {
retryOnNetworkError(function() {
attempts++;
new Mongo(invalidHostname);
}, numRetries, sleepMs);
} catch (e) {
jsTestLog("Caught exception after exhausting retries: " + e);
}
assert.eq(attempts, numRetries + 1);
}());
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