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'use strict';
var chai = require('chai');
var constants = require('constants');
/** @type {boolean} */
chai.config.includeStack = true;
/**
* Chai's assert function configured to include stacks on failure.
* @type {function}
*/
exports.assert = chai.assert;
/**
* Convert a string to flags for fs.open.
* @param {string} str String.
* @return {number} Flags.
*/
exports.flags = function(str) {
switch (str) {
case 'r':
return constants.O_RDONLY;
case 'rs':
return constants.O_RDONLY | constants.O_SYNC;
case 'r+':
return constants.O_RDWR;
case 'rs+':
return constants.O_RDWR | constants.O_SYNC;
case 'w':
return constants.O_TRUNC | constants.O_CREAT | constants.O_WRONLY;
case 'wx': // fall through
case 'xw':
return constants.O_TRUNC | constants.O_CREAT | constants.O_WRONLY |
constants.O_EXCL;
case 'w+':
return constants.O_TRUNC | constants.O_CREAT | constants.O_RDWR;
case 'wx+': // fall through
case 'xw+':
return constants.O_TRUNC | constants.O_CREAT | constants.O_RDWR |
constants.O_EXCL;
case 'a':
return constants.O_APPEND | constants.O_CREAT | constants.O_WRONLY;
case 'ax': // fall through
case 'xa':
return constants.O_APPEND | constants.O_CREAT | constants.O_WRONLY |
constants.O_EXCL;
case 'a+':
return constants.O_APPEND | constants.O_CREAT | constants.O_RDWR;
case 'ax+': // fall through
case 'xa+':
return constants.O_APPEND | constants.O_CREAT | constants.O_RDWR |
constants.O_EXCL;
default:
throw new Error('Unsupported flag: ' + str);
}
};