diff --git a/README.md b/README.md
index 2e828d9..a44341f 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ $json = <<<'JSON'
 JSON;
 
 $builder = new RouteBuilder();
-$routes = $builder->buildRoutesFromJson($json);
+$routes = $builder->buildRoutes($json);
 
 $router = new Router();
 $router->addRoutes($routes);
diff --git a/composer.json b/composer.json
index fd426f1..c4f42ad 100644
--- a/composer.json
+++ b/composer.json
@@ -14,6 +14,9 @@
     "require": {
         "php": ">=5.3.0"
     },
+    "require-dev": {
+        "phpunit/phpunit": "4.1.*"
+    },
     "autoload": {
         "psr-0": { "pjdietz\\WellRESTed": "src/" },
         "classmap": ["src/pjdietz/WellRESTed/Exceptions/HttpExceptions.php"]
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..8827332
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,714 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "This file is @generated automatically"
+    ],
+    "hash": "ff7bc5c6c0cd51153b947901dc3d51af",
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+    "packages-dev": [
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+                    "role": "lead"
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+                "reference": "acd690379117b042d1c8af1fafd61bde001bf6bb",
+                "shasum": ""
+            },
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+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "FilterIterator implementation that filters files based on a list of suffixes.",
+            "homepage": "https://github.com/sebastianbergmann/php-file-iterator/",
+            "keywords": [
+                "filesystem",
+                "iterator"
+            ],
+            "time": "2013-10-10 15:34:57"
+        },
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+            "version": "1.2.0",
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+                    "name": "Sebastian Bergmann",
+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
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+            "keywords": [
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+            "time": "2014-01-30 17:20:04"
+        },
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+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
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+            ],
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+            "homepage": "https://github.com/sebastianbergmann/php-timer/",
+            "keywords": [
+                "timer"
+            ],
+            "time": "2013-08-02 07:42:54"
+        },
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+                "shasum": ""
+            },
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+                "ext-tokenizer": "*",
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+                    "name": "Sebastian Bergmann",
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+                    "email": "sebastian@phpunit.de",
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+                {
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+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
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+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@2bepublished.at"
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+            ],
+            "description": "Provides the functionality to compare PHP values for equality",
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+            "keywords": [
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+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                },
+                {
+                    "name": "Kore Nordmann",
+                    "email": "mail@kore-nordmann.de"
+                }
+            ],
+            "description": "Diff implementation",
+            "homepage": "http://www.github.com/sebastianbergmann/diff",
+            "keywords": [
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+            "time": "2013-08-03 16:46:33"
+        },
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+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net",
+                    "role": "Lead"
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+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
+            "homepage": "https://github.com/sebastianbergmann/version",
+            "time": "2014-03-07 15:35:33"
+        },
+        {
+            "name": "symfony/yaml",
+            "version": "v2.5.1",
+            "target-dir": "Symfony/Component/Yaml",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/Yaml.git",
+                "reference": "1057e87364c0b38b50f5695fc9df9dd189036bec"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/Yaml/zipball/1057e87364c0b38b50f5695fc9df9dd189036bec",
+                "reference": "1057e87364c0b38b50f5695fc9df9dd189036bec",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.5-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Symfony\\Component\\Yaml\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com",
+                    "homepage": "http://fabien.potencier.org",
+                    "role": "Lead Developer"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "http://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Yaml Component",
+            "homepage": "http://symfony.com",
+            "time": "2014-07-08 12:21:33"
+        }
+    ],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "platform": {
+        "php": ">=5.3.0"
+    },
+    "platform-dev": []
+}
diff --git a/phpunit.xml b/phpunit.xml
new file mode 100644
index 0000000..ca23fcd
--- /dev/null
+++ b/phpunit.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit colors="true">
+    <testsuites>
+        <testsuite name="WellRESTed Test Suite">
+            <directory>./test/</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>
diff --git a/src/pjdietz/WellRESTed/RouteBuilder.php b/src/pjdietz/WellRESTed/RouteBuilder.php
index 3749711..78de6c1 100644
--- a/src/pjdietz/WellRESTed/RouteBuilder.php
+++ b/src/pjdietz/WellRESTed/RouteBuilder.php
@@ -15,26 +15,46 @@ use pjdietz\WellRESTed\Interfaces\HandlerInterface;
 use pjdietz\WellRESTed\Routes\RegexRoute;
 use pjdietz\WellRESTed\Routes\StaticRoute;
 use pjdietz\WellRESTed\Routes\TemplateRoute;
-use stdClass;
 
 /**
  * Class for facilitating constructing Routers.
  */
 class RouteBuilder
 {
-    private $handlerNamespace;
-    private $templateVariablePatterns;
+    /** @var string Regex pattern to use for URI template patters. */
     private $defaultVariablePattern;
+    /** @var string Common prefix to affix to handler class names. */
+    private $handlerNamespace;
+    /** @var array Associative array of variable names and regex patterns. */
+    private $templateVariablePatterns;
 
     /**
      * Contruct and return an array of routes.
      *
-     * @param $data
-     * @return array
+     * If $data is a string, buildRoutes() will parse it as JSON with json_decode.
+     * <br /><br />
+     * If $data is an array, buildRoutes() assumes each item in the array is
+     * an object it can translate into a route.
+     * <br /><br />
+     * If $data is an object, buildRoutes() assumes it will have a "routes"
+     * property with an array value that is a collection of objects to
+     * translate into routes. Any other properties will be read with
+     * readConfiguration()
+     *
+     * @param string|array|object $data Description of routes to build.
+     * @return array List of routes to add to a router.
      * @throws Exceptions\ParseException
      */
     public function buildRoutes($data)
     {
+        // If $data is a string, attempt to parse it as JSON.
+        if (is_string($data)) {
+            $data = json_decode($data);
+            if (is_null($data)) {
+                throw new ParseException("Unable to parse as JSON.");
+            }
+        }
+
         // Locate the list of routes. This should be one of these:
         // - If $data is an object, $data->routes
         // - If $data is an array, $data
@@ -55,12 +75,116 @@ class RouteBuilder
         return $routes;
     }
 
-    public function buildRoutesFromJson($json) {
-        return $this->buildRoutes(json_decode($json));
+    /**
+     * Parse an object and update the instances with the new configuration.
+     *
+     * ->handlerNamespace is passed to setHandlerNamesapce()
+     * <br /></br />
+     * ->variablePattern is passed to setDefaultVariablePattern()
+     * <br /><br />
+     * ->vars is passed to setTemplateVars()
+     */
+    public function readConfiguration($data)
+    {
+        if (isset($data->handlerNamespace)) {
+            $this->setHandlerNamespace($data->handlerNamespace);
+        }
+        if (isset($data->variablePattern)) {
+            $this->setDefaultVariablePattern($data->variablePattern);
+        }
+        if (isset($data->vars)) {
+            $this->setTemplateVars((array) $data->vars);
+        }
     }
 
     /**
-     * @param stdClass|array $item
+     * Return the string to prepend to handler class names.
+     *
+     * @return string
+     */
+    public function getHandlerNamespace()
+    {
+        return $this->handlerNamespace;
+    }
+
+    /**
+     * Set the prefix to prepend to handler class names.
+     *
+     * @param mixed $handlerNamespace
+     */
+    public function setHandlerNamespace($handlerNamespace = "")
+    {
+        $this->handlerNamespace = $handlerNamespace;
+    }
+
+    /**
+     * Return an associative array of variable names and regex patterns.
+     *
+     * @return mixed
+     */
+    public function getTemplateVars()
+    {
+        return $this->templateVariablePatterns;
+    }
+
+    /**
+     * Set the array of template variable patterns.
+     *
+     * Keys are names of variables for use in URI template (do not include {}).
+     * Values are regex patterns or any of the following special names: SLUG,
+     * ALPHA, ALPHANUM, DIGIT, NUM.
+     * <br /><br />
+     * If you wish to use additional named patterns, subclass RouteBuilder and
+     * override getTemplateVariablePattern.
+     *
+     * @param array $vars Associative array of variable name => pattern
+     */
+    public function setTemplateVars(array $vars)
+    {
+        foreach ($vars as $name => $var) {
+            $vars[$name] = $this->getTemplateVariablePattern($var);
+        }
+        $this->templateVariablePatterns = $vars;
+    }
+
+    /**
+     * Return the default regex pattern to use for URI template variables.
+     *
+     * @return string
+     */
+    public function getDefaultVariablePattern()
+    {
+        return $this->defaultVariablePattern;
+    }
+
+    /**
+     * Set the default regex pattern to use for URI template variables.
+     *
+     * $defaultVariablePattern may be a regex pattern or one of the following:
+     * SLUG, ALPHA, ALPHANUM, DIGIT, NUM.
+     * <br /><br />
+     * If you wish to use additional named patterns, subclass RouteBuilder and
+     * override getTemplateVariablePattern.
+     *
+     * @param mixed $defaultVariablePattern
+     */
+    public function setDefaultVariablePattern($defaultVariablePattern)
+    {
+        $this->defaultVariablePattern = $this->getTemplateVariablePattern($defaultVariablePattern);
+    }
+
+    /**
+     * Create and return an approrate route given an object describing a route.
+     *
+     * $item must contain a "handler" property providing the classname for the
+     * HandlerInterface to call getResponse() on if the route matches. "handler"
+     * may be fully qualified and begin with "\". If it does not begin with "\",
+     * the instance's $handlerNamespace is affixed to the begining.
+     * <br /><br />
+     * $item must also contain a "path", "template", or "pattern" property to
+     * indicate how to create the StaticRoute, TemplateRoute, or RegexRoute.
+     *
+     * @param object|array $item
      * @return HandlerInterface
      * @throws Exceptions\ParseException
      */
@@ -93,7 +217,7 @@ class RouteBuilder
             return new TemplateRoute($item->template, $handler, $this->getDefaultVariablePattern(), $vars);
         }
 
-        // Regex Rout
+        // Regex Route
         if (isset($item->pattern)) {
             return new RegexRoute($item->pattern, $handler);
         }
@@ -101,20 +225,20 @@ class RouteBuilder
         return null;
     }
 
-    protected function readConfiguration($data)
+    /**
+     * Provide a regular expression pattern given a name.
+     *
+     * The names SLUG, ALPHA, ALPHANUM, DIGIT, NUM convert to regex patterns.
+     * Anything else passes through as is.
+     * <br /><br />
+     * If you wish to use additional named patterns, subclass RouteBuilder and
+     * override getTemplateVariablePattern.
+     *
+     * @param string $variable Regex pattern or name (SLUG, ALPHA, ALPHANUM, DIGIT, NUM
+     * @return string
+     */
+    protected function getTemplateVariablePattern($variable)
     {
-        if (isset($data->handlerNamespace)) {
-            $this->setHandlerNamespace($data->handlerNamespace);
-        }
-        if (isset($data->variablePattern)) {
-            $this->setDefaultVariablePattern($data->variablePattern);
-        }
-        if (isset($data->vars)) {
-            $this->setTemplateVars((array) $data->vars);
-        }
-    }
-
-    protected function getTemplateVariablePattern($variable) {
         switch ($variable) {
             case "SLUG":
                 return TemplateRoute::RE_SLUG;
@@ -130,56 +254,4 @@ class RouteBuilder
         }
     }
 
-    /**
-     * @param mixed $handlerNamespace
-     */
-    public function setHandlerNamespace($handlerNamespace)
-    {
-        $this->handlerNamespace = $handlerNamespace;
-    }
-
-    /**
-     * @return mixed
-     */
-    public function getHandlerNamespace()
-    {
-        return $this->handlerNamespace;
-    }
-
-    /**
-     * @param array $vars
-     * @internal param mixed $templateVars
-     */
-    public function setTemplateVars(array $vars)
-    {
-        foreach ($vars as $name => $var) {
-            $vars[$name] = $this->getTemplateVariablePattern($var);
-        }
-        $this->templateVariablePatterns = $vars;
-    }
-
-    /**
-     * @return mixed
-     */
-    public function getTemplateVars()
-    {
-        return $this->templateVariablePatterns;
-    }
-
-    /**
-     * @param mixed $defaultVariablePattern
-     */
-    public function setDefaultVariablePattern($defaultVariablePattern)
-    {
-        $this->defaultVariablePattern = $this->getTemplateVariablePattern($defaultVariablePattern);
-    }
-
-    /**
-     * @return mixed
-     */
-    public function getDefaultVariablePattern()
-    {
-        return $this->defaultVariablePattern;
-    }
-
 }
diff --git a/src/pjdietz/WellRESTed/Routes/BaseRoute.php b/src/pjdietz/WellRESTed/Routes/BaseRoute.php
index 017014c..00967bf 100644
--- a/src/pjdietz/WellRESTed/Routes/BaseRoute.php
+++ b/src/pjdietz/WellRESTed/Routes/BaseRoute.php
@@ -10,7 +10,7 @@ use pjdietz\WellRESTed\Interfaces\HandlerInterface;
 abstract class BaseRoute implements HandlerInterface
 {
     /** @var string  Fully qualified name for the interface for handlers */
-    const DISPATCHER_INTERFACE = '\\pjdietz\\WellRESTed\\Interfaces\\HandlerInterface';
+    const HANDLER_INTERFACE = '\\pjdietz\\WellRESTed\\Interfaces\\HandlerInterface';
 
     /** @var string */
     private $targetClassName;
@@ -29,7 +29,7 @@ abstract class BaseRoute implements HandlerInterface
      */
     protected function getTarget()
     {
-        if (is_subclass_of($this->targetClassName, self::DISPATCHER_INTERFACE)) {
+        if (is_subclass_of($this->targetClassName, self::HANDLER_INTERFACE)) {
             /** @var HandlerInterface $target */
             $target = new $this->targetClassName();
             return $target;
diff --git a/test/RouteBuilderTest.php b/test/RouteBuilderTest.php
new file mode 100644
index 0000000..be78c27
--- /dev/null
+++ b/test/RouteBuilderTest.php
@@ -0,0 +1,168 @@
+<?php
+
+namespace pjdietz\WellRESTed\Test;
+
+use pjdietz\WellRESTed\Interfaces\HandlerInterface;
+use pjdietz\WellRESTed\RouteBuilder;
+use pjdietz\WellRESTed\Routes\TemplateRoute;
+use stdClass;
+
+class RouteBuilderTest extends \PHPUnit_Framework_TestCase
+{
+    /*
+     * Parse JSON and get the correct number of routes.
+     */
+    public function testBuildValidJson()
+    {
+        $json = <<<'JSON'
+{
+    "handlerNamespace": "\\myapi\\Handlers",
+    "routes": [
+        {
+            "path": "/",
+            "handler": "RootHandler"
+        },
+        {
+            "path": "/cats/",
+            "handler": "CatCollectionHandler"
+        },
+        {
+            "tempalte": "/cats/{id}",
+            "handler": "CatItemHandler"
+        }
+    ]
+}
+JSON;
+
+        $builder = new RouteBuilder();
+        $routes = $builder->buildRoutes($json);
+        $this->assertEquals(3, count($routes));
+    }
+
+    /**
+     * Fail properly on malformed JSON
+     *
+     * @expectedException        \pjdietz\WellRESTed\Exceptions\ParseException
+     * @expectedExceptionMessage Unable to parse as JSON.
+     */
+    public function testBuildInvalidJson()
+    {
+        $json = "jadhjaksd";
+        $builder = new RouteBuilder();
+        $routes = $builder->buildRoutes($json);
+    }
+
+    public function testNamesapce()
+    {
+        $namespace = "\\test\\Namespace";
+        $builder = new RouteBuilder();
+        $builder->setHandlerNamespace($namespace);
+        $this->assertEquals($namespace, $builder->getHandlerNamespace());
+    }
+
+    /**
+     * @dataProvider varProvider
+     */
+    public function testDefaultVariablePattern($name, $pattern, $expected)
+    {
+        $builder = new RouteBuilder();
+        $builder->setDefaultVariablePattern($pattern);
+        $this->assertEquals($builder->getDefaultVariablePattern(), $expected);
+    }
+
+    /**
+     * @dataProvider varProvider
+     */
+    public function testConfigurationDefaultVariablePattern($name, $pattern, $expected)
+    {
+        $builder = new RouteBuilder();
+        $conf = new stdClass();
+        $conf->variablePattern = $pattern;
+        $builder->readConfiguration($conf);
+        $this->assertEquals($builder->getDefaultVariablePattern(), $expected);
+    }
+
+    /**
+     * @dataProvider varProvider
+     */
+    public function testTemplateVariables($name, $pattern, $expected)
+    {
+        $builder = new RouteBuilder();
+        $builder->setTemplateVars(array($name => $pattern));
+        $vars = $builder->getTemplateVars();
+        $this->assertEquals($vars[$name], $expected);
+    }
+
+    /**
+     * @dataProvider varProvider
+     */
+    public function testConfigurationTemplateVariables($name, $pattern, $expected)
+    {
+        $builder = new RouteBuilder();
+        $conf = new stdClass();
+        $conf->vars = array($name => $pattern);
+        $builder->readConfiguration($conf);
+        $vars = $builder->getTemplateVars();
+        $this->assertEquals($vars[$name], $expected);
+    }
+
+    public function varProvider()
+     {
+         return array(
+             array("slug", "SLUG", TemplateRoute::RE_SLUG),
+             array("name", "ALPHA", TemplateRoute::RE_ALPHA),
+             array("name", "ALPHANUM", TemplateRoute::RE_ALPHANUM),
+             array("id", "DIGIT", TemplateRoute::RE_NUM),
+             array("id", "NUM", TemplateRoute::RE_NUM),
+             array("custom", ".*", ".*")
+         );
+     }
+
+    /**
+     * @dataProvider routeDescriptionProvider
+     */
+    public function testRoutes($key, $value, $expectedClass)
+    {
+        $mock = $this->getMock('\pjdietz\WellRESTed\Interfaces\HandlerInterface');
+        $routes = array(
+            (object) array(
+                $key => $value,
+                "handler" => get_class($mock)
+            )
+        );
+        $builder = new RouteBuilder();
+        $routes = $builder->buildRoutes($routes);
+        $route = $routes[0];
+        $this->assertInstanceOf($expectedClass, $route);
+    }
+
+    /**
+     * @dataProvider routeDescriptionProvider
+     */
+    public function testRoutesObject($key, $value, $expectedClass)
+    {
+        $mock = $this->getMock('\pjdietz\WellRESTed\Interfaces\HandlerInterface');
+        $conf = (object) array(
+            "routes" => array(
+                (object) array(
+                    $key => $value,
+                    "handler" => get_class($mock)
+                )
+            )
+        );
+        $builder = new RouteBuilder();
+        $routes = $builder->buildRoutes($conf);
+        $route = $routes[0];
+        $this->assertInstanceOf($expectedClass, $route);
+    }
+
+    public function routeDescriptionProvider()
+    {
+        return array(
+            array("path", "/", '\pjdietz\WellRESTed\Routes\StaticRoute'),
+            array("pattern", "/cat/[0-9]+", '\pjdietz\WellRESTed\Routes\RegexRoute'),
+            array("template", "/cat/{id}", '\pjdietz\WellRESTed\Routes\TemplateRoute'),
+        );
+    }
+
+}