commit

node_modules/failure/test.js

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+describe('failure', function () {
+  'use strict';
+
+  var assume = require('assume')
+    , failure = require('./');
+
+  it('returns an Error instance with supplied str as message', function () {
+    var err = failure('what');
+
+    assume(err).is.instanceOf(Error);
+    assume(err.message).equals('what');
+  });
+
+  it('does not merge over existing properties', function () {
+    var err = failure(new Error('what'), { foo: 'bar', message: 'hi' });
+
+    assume(err.message).equals('what');
+    assume(err.foo).equals('bar');
+  });
+
+  it('defaults to unspecified error', function () {
+    assume(failure().message).includes('error');
+  });
+
+  it('accepts Object.create(null)', function () {
+    var obj = Object.create(null)
+      , err;
+
+    obj.foo = 'bar';
+    obj.message = 'hi';
+
+    err = failure(new Error('what'), obj);
+
+    assume(err.message).equals('what');
+    assume(err.foo).equals('bar');
+  });
+
+  describe('#toJSON', function () {
+    it('adds the `toJSON` function', function () {
+      assume(failure().toJSON).is.a('function');
+    });
+
+    it('returns the stack and message', function () {
+      var err = failure('hi').toJSON();
+
+      assume(err).is.a('object');
+      assume(err.message).equals('hi');
+      assume(err.stack).is.a('string');
+    });
+
+    it('includes non standard values if defined on the error', function () {
+      var err = failure('hi', { statusCode: 200, what: 'why' })
+        , res = err.toJSON();
+
+      assume(err.what).equals('why');
+      assume(res.what).is.equals('why');
+      assume(res.statusCode).equals(200);
+      assume(err.statusCode).equals(200);
+    });
+
+    it('includes properties that were previously specified on a given error', function () {
+      var err = new Error('fools')
+        , res;
+
+      err.warning = true;
+      res = failure(err, { what: 'lol' }).toJSON();
+
+      assume(res.what).equals('lol');
+      assume(res.warning).equals(true);
+      assume(res.message).equals('fools');
+    });
+
+    it('does not override existing toJSON functions', function () {
+      var err = new Error('lol');
+
+      err.toJSON = function () {
+        return 'run, fools!';
+      };
+
+      assume(failure(err).toJSON()).equals('run, fools!');
+    });
+  });
+});