// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var test = require('tape');
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var assert = require('assert');
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var noop = function() {};
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var mustCallChecks = [];
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function runCallChecks(exitCode) {
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if (exitCode !== 0) return;
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var failed = filter(mustCallChecks, function(context) {
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if ('minimum' in context) {
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context.messageSegment = 'at least ' + context.minimum;
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return context.actual < context.minimum;
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} else {
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context.messageSegment = 'exactly ' + context.exact;
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return context.actual !== context.exact;
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}
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});
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for (var i = 0; i < failed.length; i++) {
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var context = failed[i];
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console.log('Mismatched %s function calls. Expected %s, actual %d.',
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context.name,
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context.messageSegment,
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context.actual);
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// IE8 has no .stack
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if (context.stack) console.log(context.stack.split('\n').slice(2).join('\n'));
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}
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assert.strictEqual(failed.length, 0);
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}
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exports.mustCall = function(fn, exact) {
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return _mustCallInner(fn, exact, 'exact');
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};
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function _mustCallInner(fn, criteria, field) {
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if (typeof criteria == 'undefined') criteria = 1;
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if (typeof fn === 'number') {
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criteria = fn;
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fn = noop;
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} else if (fn === undefined) {
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fn = noop;
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}
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if (typeof criteria !== 'number')
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throw new TypeError('Invalid ' + field + ' value: ' + criteria);
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var context = {
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actual: 0,
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stack: (new Error()).stack,
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name: fn.name || '<anonymous>'
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};
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context[field] = criteria;
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// add the exit listener only once to avoid listener leak warnings
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if (mustCallChecks.length === 0) test.onFinish(function() { runCallChecks(0); });
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mustCallChecks.push(context);
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return function() {
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context.actual++;
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return fn.apply(this, arguments);
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};
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}
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exports.mustNotCall = function(msg) {
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return function mustNotCall() {
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assert.fail(msg || 'function should not have been called');
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};
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};
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function filter(arr, fn) {
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if (arr.filter) return arr.filter(fn);
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var filtered = [];
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for (var i = 0; i < arr.length; i++) {
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if (fn(arr[i], i, arr)) filtered.push(arr[i]);
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}
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return filtered
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}
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