1 files changed, 56 insertions, 0 deletions
diff --git a/deps/npm/node_modules/util-promisify/test/common.js b/deps/npm/node_modules/util-promisify/test/common.js
new file mode 100644
index 0000000000..72262b7feb
--- /dev/null
+++ b/deps/npm/node_modules/util-promisify/test/common.js
@@ -0,0 +1,56 @@
+const mustCallChecks = [];
+
+function runCallChecks(exitCode) {
+  if (exitCode !== 0) return;
+
+  const failed = mustCallChecks.filter(function(context) {
+    return context.actual !== context.expected;
+  });
+
+  failed.forEach(function(context) {
+    console.log('Mismatched %s function calls. Expected %d, actual %d.',
+                context.name,
+                context.expected,
+                context.actual);
+    console.log(context.stack.split('\n').slice(2).join('\n'));
+  });
+
+  if (failed.length) process.exit(1);
+}
+
+exports.mustCall = function(fn, expected) {
+  if (typeof fn === 'number') {
+    expected = fn;
+    fn = noop;
+  } else if (fn === undefined) {
+    fn = noop;
+  }
+
+  if (expected === undefined)
+    expected = 1;
+  else if (typeof expected !== 'number')
+    throw new TypeError(`Invalid expected value: ${expected}`);
+
+  const context = {
+    expected: expected,
+    actual: 0,
+    stack: (new Error()).stack,
+    name: fn.name || '<anonymous>'
+  };
+
+  // add the exit listener only once to avoid listener leak warnings
+  if (mustCallChecks.length === 0) process.on('exit', runCallChecks);
+
+  mustCallChecks.push(context);
+
+  return function() {
+    context.actual++;
+    return fn.apply(this, arguments);
+  };
+};
+
+// Crash the process on unhandled rejections.
+exports.crashOnUnhandledRejection = function() {
+  process.on('unhandledRejection',
+             (err) => process.nextTick(() => { throw err; }));
+};