conditional/lib/test/argument_test.js

A preconditions package based on Google's Preconditions library

(function() {
  var IllegalArgumentError, IllegalStateError, checkArgument, checkState, runTests;

  require('./helpers/test_helper');

  checkArgument = preconditions.checkArgument, IllegalArgumentError = preconditions.IllegalArgumentError, checkState = preconditions.checkState, IllegalStateError = preconditions.IllegalStateError;

  runTests = function(test) {
    test('argument', checkArgument, IllegalArgumentError);
    return test('state', checkState, IllegalStateError);
  };

  runTests(function(name, checker, errorType) {
    return describe("test " + name + " precondition", function() {
      it('happy path test', function() {
        var wrapper;
        wrapper = function() {
          return checker(true, 'valid argument');
        };
        return assert.doesNotThrow(wrapper);
      });
      it("'null' condition value also results in a error", function() {
        var wrapper;
        wrapper = function() {
          return checker(null, "'null' is not allowed");
        };
        return assert.throws(wrapper, errorType, "'null' is not allowed");
      });
      it('a non-undefined value for condition is valid', function() {
        var wrapper;
        wrapper = function() {
          return checker('random', 'a non-undefined value is allowed');
        };
        return assert.doesNotThrow(wrapper);
      });
      it('a empty string value for condition is valid', function() {
        var wrapper;
        wrapper = function() {
          return checker('', 'a string value is allowed');
        };
        return assert.doesNotThrow(wrapper);
      });
      return it('a numerical value 0 is valid', function() {
        var wrapper;
        wrapper = function() {
          return checker(0, '0 (zero) value is allowed');
        };
        return assert.doesNotThrow(wrapper);
      });
    });
  });

}).call(this);