#27 - merging master

README.md

@@ -59,10 +59,11 @@ jefferson(app, conf);
 ## Configuration
 * **routes** - (*required*) - A map of routes by name. Each object in the map describes an endpoint to be wired. These endpoints must contain an HTTP method, a path, and an array of middleware functions.
 * **aliases**: (*optional*) - A map of alias-name to handler chain. Routes may use these aliases in lieu of repeated function groups.
-* **proxies**: (*optional*) - An array of proxy objects invoked around all middleware functions in order. Each proxy object should have an init() function that accepts a delegate middleware function and returns a new middleware function.
-* **params**: (*optional*) - A map of path-parameter name to resolver functions. 
 * **pre**: (*optional*) - (object) Boilerplate section of pre-middleware functions
 * **post**: (*optional*) - (object) Boilerplate section of post-middleware functions
+* **proxies**: (*optional*) - An array of proxy objects invoked around all middleware functions in order. Each proxy object should have an init() function that accepts a delegate middleware function and returns a new middleware function.
+* **params**: (*optional*) - A map of path-parameter name to resolver functions.
+* **engines**: (*optional*) - An array of objects describing templating engines to use in the app. `{ ext: <string>, callback: <function> }`
 * **locals**: (*optional*) - (object) An object that will populate app.locals (http://expressjs.com/api.html#app.locals)  
 
 Boilerplate Config Sections (pre/post):

src/domain/appsection/engines.js

@@ -0,0 +1,19 @@
+"use strict";
+
+/**
+ * Configures templating engines for an app
+ */
+class EngineResolver {
+    constructor(app, conf) {
+        this.app = app;
+        this.conf = conf;
+    }
+
+    configure() {
+        this.conf.engines.forEach((it) => {
+            this.app.engine(it.ext, it.callback);
+        });
+    }
+}
+
+module.exports = EngineResolver;

src/domain/appsection/engines.test.js

@@ -0,0 +1,28 @@
+"use strict";
+
+let chai = require("chai");
+let expect = chai.expect;
+let EngineConfig = require("./engines");
+
+describe("The 'engines' configuration section", () => {
+    it("can configure templating engines for an app", () => {
+        let engines = {};
+        let app = {
+            engine (ext, callback) {
+                engines[ext] = callback;
+            }
+        };
+        let conf = {
+            engines: [
+                {
+                    ext: "jade",
+                    callback: () => "derp"
+                }
+            ]
+        };
+
+        new EngineConfig(app, conf).configure();
+        expect(engines.jade).to.be.a.function;
+        expect(engines.jade()).to.equal("derp");
+    });
+});

src/domain/configuration.js

@@ -24,6 +24,7 @@ class Configuration {
         this.aliases = conf.aliases || {};
         this.proxies = conf.proxies || [];
         this.locals = conf.locals || {};
+        this.engines = conf.engines || [];
         this.pre = boilerplateSection(conf.pre);
         this.post = boilerplateSection(conf.post);
     }

src/jefferson.js

@@ -7,6 +7,7 @@ var Configuration = require("./domain/configuration");
 var debug = require("debug")("jefferson");
 let AppSectionClasses = [
     require("./domain/appsection/locals"),
+    require("./domain/appsection/engines"),
     require("./domain/appsection/resolvers"),
     require("./domain/appsection/routes")
 ];