Added assertion counting (fixes chaijs#94)

lib/chai/assertion.js

@@ -13,6 +13,8 @@ module.exports = function (_chai, util) {
  var AssertionError = _chai.AssertionError
  , flag = util.flag;
 
+ var count = 0;
+
  /*!
  * Module export.
  */
@@ -81,6 +83,14 @@ module.exports = function (_chai, util) {
  util.overwriteMethod(this.prototype, name, fn);
  };
 
+ Assertion.getCount = function() {
+ return count;
+ };
+
+ Assertion.resetCount = function() {
+ count = 0;
+ };
+
  /*!
  * ### .assert(expression, message, negateMessage, expected, actual)
  *
@@ -96,7 +106,10 @@ module.exports = function (_chai, util) {
  */
 
  Assertion.prototype.assert = function (expr, msg, negateMsg, expected, _actual, showDiff) {
+
  var ok = util.test(this, arguments);
+ count++;
+
  if (true !== showDiff) showDiff = false;
  if (true !== Assertion.showDiff) showDiff = false;
 

lib/chai/interface/assert.js

@@ -41,6 +41,27 @@ module.exports = function (chai, util) {
  );
  };
 
+ /**
+ * ### .asserted()
+ *
+ * Asserts that assertions have been made.
+ *
+ * @name asserted
+ * @api public
+ */
+
+ assert.asserted = function () {
+ var act = Assertion.getCount();
+ var test = new Assertion(null);
+
+ test.assert(
+ act > 0
+ , 'expected one or more assertions'
+ , '[ negation message unavailable ]'
+ );
+
+ };
+
  /**
  * ### .fail(actual, expected, [message], [operator])
  *

test/assert.js

@@ -32,6 +32,17 @@ describe('assert', function () {
  }, "expected 'test' to be true");
  });
 
+ it('asserted', function() {
+ chai.Assertion.resetCount();
+ assert.isTrue(true);
+ assert.asserted();
+
+ chai.Assertion.resetCount();
+ err(function() {
+ assert.asserted();
+ }, "expected one or more assertions");
+ });
+
  it('ok', function () {
  assert.ok(true);
  assert.ok(1);