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Diffstat (limited to 'node_modules/events/tests/common.js')
-rw-r--r--node_modules/events/tests/common.js104
1 files changed, 104 insertions, 0 deletions
diff --git a/node_modules/events/tests/common.js b/node_modules/events/tests/common.js
new file mode 100644
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+++ b/node_modules/events/tests/common.js
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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
+}