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test: add test for debug usage message

PR-URL: #8061
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: cjihrig - Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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Trott committed Aug 10, 2016
1 parent ca6363b commit 3dfcb2e266d5e66610de077c25adc93fd552c267
Showing with 21 additions and 0 deletions.
  1. +21 −0 test/parallel/test-debug-usage.js
@@ -0,0 +1,21 @@
'use strict';
const common = require('../common');
const assert = require('assert');
const spawn = require('child_process').spawn;
const child = spawn(process.execPath, ['debug']);
child.stderr.setEncoding('utf8');
const expectedUsageMessage = `Usage: node debug script.js
node debug <host>:<port>
node debug -p <pid>
`;
var actualUsageMessage = '';
child.stderr.on('data', function(data) {
actualUsageMessage += data.toString();
});
child.on('exit', common.mustCall(function(code) {
assert.strictEqual(code, 1);
assert.strictEqual(actualUsageMessage, expectedUsageMessage);
}));

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