Add wrap() tests, 100% coverage

test/wrap.test.js

@@ -0,0 +1,251 @@
+var assert = require('assert');
+var Kareem = require('../');
+
+describe('wrap()', function() {
+  var hooks;
+
+  beforeEach(function() {
+    hooks = new Kareem();
+  });
+
+  it('handles pre errors', function(done) {
+    hooks.pre('cook', function(done) {
+      done('error!');
+    });
+
+    hooks.post('cook', function(obj) {
+      obj.tofu = 'no';
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [obj];
+    args.push(function(error, result) {
+      assert.equal('error!', error);
+      assert.ok(!result);
+      assert.equal(undefined, obj.tofu);
+      done();
+    });
+
+    hooks.wrap(
+      'cook',
+      function(o, callback) {
+        // Should never get called
+        assert.ok(false);
+        callback(null, o);
+      },
+      obj,
+      args);
+  });
+
+  it('handles pre errors when no callback defined', function(done) {
+    hooks.pre('cook', function(done) {
+      done('error!');
+    });
+
+    hooks.post('cook', function(obj) {
+      obj.tofu = 'no';
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [obj];
+
+    hooks.wrap(
+      'cook',
+      function(o, callback) {
+        // Should never get called
+        assert.ok(false);
+        callback(null, o);
+      },
+      obj,
+      args);
+
+    setTimeout(
+      function() {
+        done();
+      },
+      25);
+  });
+
+  it('handles errors in wrapped function', function(done) {
+    hooks.pre('cook', function(done) {
+      done();
+    });
+
+    hooks.post('cook', function(obj) {
+      obj.tofu = 'no';
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [obj];
+    args.push(function(error, result) {
+      assert.equal('error!', error);
+      assert.ok(!result);
+      assert.equal(undefined, obj.tofu);
+      done();
+    });
+
+    hooks.wrap(
+      'cook',
+      function(o, callback) {
+        callback('error!');
+      },
+      obj,
+      args);
+  });
+
+  it('handles errors in post', function(done) {
+    hooks.pre('cook', function(done) {
+      done();
+    });
+
+    hooks.post('cook', function(obj, callback) {
+      obj.tofu = 'no';
+      callback('error!');
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [obj];
+    args.push(function(error, result) {
+      assert.equal('error!', error);
+      assert.ok(!result);
+      assert.equal('no', obj.tofu);
+      done();
+    });
+
+    hooks.wrap(
+      'cook',
+      function(o, callback) {
+        callback(null, o);
+      },
+      obj,
+      args);
+  });
+
+  it('works with no args', function(done) {
+    hooks.pre('cook', function(done) {
+      done();
+    });
+
+    hooks.post('cook', function(callback) {
+      obj.tofu = 'no';
+      callback();
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [];
+
+    hooks.wrap(
+      'cook',
+      function(callback) {
+        callback(null);
+      },
+      obj,
+      args);
+
+    setTimeout(
+      function() {
+        assert.equal('no', obj.tofu);
+        done();
+      },
+      25);
+  });
+
+  it('handles pre errors with no args', function(done) {
+    hooks.pre('cook', function(done) {
+      done('error!');
+    });
+
+    hooks.post('cook', function(callback) {
+      obj.tofu = 'no';
+      callback();
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [];
+
+    hooks.wrap(
+      'cook',
+      function(callback) {
+        callback(null);
+      },
+      obj,
+      args);
+
+    setTimeout(
+      function() {
+        assert.equal(undefined, obj.tofu);
+        done();
+      },
+      25);
+  });
+
+  it('handles wrapped function errors with no args', function(done) {
+    hooks.pre('cook', function(done) {
+      obj.waffles = false;
+      done();
+    });
+
+    hooks.post('cook', function(callback) {
+      obj.tofu = 'no';
+      callback();
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [];
+
+    hooks.wrap(
+      'cook',
+      function(callback) {
+        callback('error!');
+      },
+      obj,
+      args);
+
+    setTimeout(
+      function() {
+        assert.equal(false, obj.waffles);
+        assert.equal(undefined, obj.tofu);
+        done();
+      },
+      25);
+  });
+
+  it('handles post errors with no args', function(done) {
+    hooks.pre('cook', function(done) {
+      obj.waffles = false;
+      done();
+    });
+
+    hooks.post('cook', function(callback) {
+      obj.tofu = 'no';
+      callback('error!');
+    });
+
+    var obj = { bacon: 0, eggs: 0 };
+
+    var args = [];
+
+    hooks.wrap(
+      'cook',
+      function(callback) {
+        callback();
+      },
+      obj,
+      args);
+
+    setTimeout(
+      function() {
+        assert.equal(false, obj.waffles);
+        assert.equal('no', obj.tofu);
+        done();
+      },
+      25);
+  });
+});