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