diff --git a/lib/config/configuration.js b/lib/config/configuration.js
index 8a216db3b..c8990f819 100644
--- a/lib/config/configuration.js
+++ b/lib/config/configuration.js
@@ -115,6 +115,15 @@ Configuration.prototype.getMaxErrors = function() {
     return this._maxErrors;
 };
 
+/**
+ * Returns base path.
+ *
+ * @returns {String}
+ */
+Configuration.prototype.getBasePath = function() {
+    return this._basePath;
+};
+
 /**
  * Processes configuration and returns config options.
  *
@@ -227,7 +236,21 @@ Configuration.prototype._loadAdditionalRule = function(additionalRule) {
  * @param {Rule} rule
  */
 Configuration.prototype.registerRule = function(rule) {
-    this._rules[rule.getOptionName()] = rule;
+    var optionName = rule.getOptionName();
+    assert(!this._rules.hasOwnProperty(optionName), 'Rule "' + optionName + '" is already registered');
+    this._rules[optionName] = rule;
+};
+
+/**
+ * Returns list of registered rules.
+ *
+ * @returns {Rule[]}
+ */
+Configuration.prototype.getRegisteredRules = function() {
+    var rules = this._rules;
+    return Object.keys(rules).map(function(ruleOptionName) {
+        return rules[ruleOptionName];
+    });
 };
 
 /**
@@ -240,6 +263,15 @@ Configuration.prototype.registerPreset = function(presetName, presetConfig) {
     this._presets[presetName] = presetConfig;
 };
 
+/**
+ * Returns registered presets object (key - preset name, value - preset content).
+ *
+ * @returns {Object}
+ */
+Configuration.prototype.getRegisteredPresets = function() {
+    return this._presets;
+};
+
 /**
  * Registers built-in Code Style cheking rules.
  */
diff --git a/test/config/configuration.js b/test/config/configuration.js
new file mode 100644
index 000000000..c80092c10
--- /dev/null
+++ b/test/config/configuration.js
@@ -0,0 +1,116 @@
+var assert = require('assert');
+var Configuration = require('../../lib/config/configuration');
+
+describe('modules/config/configuration', function() {
+
+    var configuration;
+    beforeEach(function() {
+        configuration = new Configuration();
+    });
+
+    describe('constructor', function() {
+        it('should set default base path', function() {
+            assert(configuration.getBasePath() === '.');
+        });
+
+        it('should set default file extensions', function() {
+            assert(configuration.getFileExtensions().length === 1);
+            assert(configuration.getFileExtensions()[0] === '.js');
+        });
+
+        it('should have no default registered rules', function() {
+            assert(configuration.getRegisteredRules().length === 0);
+        });
+
+        it('should have no default configured rules', function() {
+            assert(configuration.getConfiguredRules().length === 0);
+        });
+
+        it('should have no default presets', function() {
+            assert(Object.keys(configuration.getRegisteredPresets()).length === 0);
+        });
+
+        it('should have no default excluded file masks', function() {
+            assert(configuration.getExcludedFileMasks().length === 0);
+        });
+
+        it('should have no default maximal error count', function() {
+            assert(configuration.getMaxErrors() === null);
+        });
+    });
+
+    describe('registerRule', function() {
+        it('should add rule to registered rule list', function() {
+            var rule = {
+                getOptionName: function() {
+                    return 'ruleName';
+                }
+            };
+            configuration.registerRule(rule);
+            assert(configuration.getRegisteredRules().length === 1);
+            assert(configuration.getRegisteredRules()[0] === rule);
+            assert(configuration.getConfiguredRules().length === 0);
+        });
+
+        it('should fail on duplicate rule name', function() {
+            var rule = {
+                getOptionName: function() {
+                    return 'ruleName';
+                }
+            };
+            configuration.registerRule(rule);
+            try {
+                configuration.registerRule(rule);
+                assert(false);
+            } catch (e) {
+                assert(e.message === 'Rule "ruleName" is already registered');
+            }
+        });
+    });
+
+    describe('getRegisteredRules', function() {
+        it('should return registered rule list', function() {
+            var rule1 = {
+                getOptionName: function() {
+                    return 'ruleName1';
+                }
+            };
+            var rule2 = {
+                getOptionName: function() {
+                    return 'ruleName2';
+                }
+            };
+            configuration.registerRule(rule1);
+            configuration.registerRule(rule2);
+            assert(configuration.getRegisteredRules().length === 2);
+            assert(configuration.getRegisteredRules()[0] === rule1);
+            assert(configuration.getRegisteredRules()[1] === rule2);
+        });
+    });
+
+    describe('getRegisteredPresets', function() {
+        it('should return registered presets object', function() {
+            var preset = {maxErrors: 5};
+            assert(Object.keys(configuration.getRegisteredPresets()).length === 0);
+            configuration.registerPreset('company', preset);
+            assert(Object.keys(configuration.getRegisteredPresets()).length === 1);
+            assert(configuration.getRegisteredPresets().company === preset);
+        });
+    });
+
+    describe('getConfiguredRules', function() {
+        it('should return configured rules after config load', function() {
+            assert(configuration.getConfiguredRules().length === 0);
+            var rule = {
+                getOptionName: function() {
+                    return 'ruleName';
+                },
+                configure: function() {}
+            };
+            configuration.registerRule(rule);
+            configuration.load({ruleName: true});
+            assert(configuration.getConfiguredRules().length === 1);
+            assert(configuration.getConfiguredRules()[0] === rule);
+        });
+    });
+});
diff --git a/test/config/node-configuration.js b/test/config/node-configuration.js
new file mode 100644
index 000000000..44ecf1a44
--- /dev/null
+++ b/test/config/node-configuration.js
@@ -0,0 +1,16 @@
+var assert = require('assert');
+var NodeConfiguration = require('../../lib/config/node-configuration');
+
+describe('modules/config/node-configuration', function() {
+
+    var configuration;
+    beforeEach(function() {
+        configuration = new NodeConfiguration();
+    });
+
+    describe('constructor', function() {
+        it('should set default base path to process.cwd()', function() {
+            assert(configuration.getBasePath() === process.cwd());
+        });
+    });
+});