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43 lines
1.1 KiB
JavaScript
43 lines
1.1 KiB
JavaScript
/*!
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* Chai - addMethod utility
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* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
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* MIT Licensed
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*/
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var config = require('../config');
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/**
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* ### .addMethod (ctx, name, method)
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*
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* Adds a method to the prototype of an object.
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*
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* utils.addMethod(chai.Assertion.prototype, 'foo', function (str) {
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* var obj = utils.flag(this, 'object');
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* new chai.Assertion(obj).to.be.equal(str);
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* });
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*
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* Can also be accessed directly from `chai.Assertion`.
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*
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* chai.Assertion.addMethod('foo', fn);
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*
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* Then can be used as any other assertion.
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*
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* expect(fooStr).to.be.foo('bar');
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*
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* @param {Object} ctx object to which the method is added
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* @param {String} name of method to add
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* @param {Function} method function to be used for name
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* @name addMethod
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* @api public
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*/
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var flag = require('./flag');
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module.exports = function (ctx, name, method) {
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ctx[name] = function () {
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var old_ssfi = flag(this, 'ssfi');
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if (old_ssfi && config.includeStack === false)
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flag(this, 'ssfi', ctx[name]);
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var result = method.apply(this, arguments);
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return result === undefined ? this : result;
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};
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};
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