Add Driver#setupCommands method

lib/driver.js

@@ -31,6 +31,26 @@ var Driver = module.exports = function Driver(opts) {
 
 Utils.subclass(Driver, Basestar);
 
+Driver.prototype.setupCommands = function(commands) {
+  this.proxyMethods(commands, this.connection, this);
+
+  for (var i = 0; i < commands.length; i++) {
+    var command = commands[i];
+
+    var snake_case = command.replace(/[A-Z]+/g, function(match) {
+      if (match.length > 1) {
+        match = match.replace(/[A-Z]$/, function(m) {
+          return "_" + m.toLowerCase();
+        });
+      }
+
+      return "_" + match.toLowerCase();
+    }).replace(/^_/, '');
+
+    this.commands[snake_case] = this[command].bind(this);
+  }
+}
+
 // Public: Starts up the driver, and triggers the provided callback when done.
 //
 // callback - function to run when the driver is started

test/specs/driver.spec.js

@@ -7,14 +7,18 @@ var Driver = source("driver"),
     Utils = source('utils');
 
 describe("Driver", function() {
-  var device = {
-    connection: {},
-    emit: spy()
-  };
+  var device, driver;
 
-  var driver = new Driver({
-    name: 'driver',
-    device: device
+  beforeEach(function() {
+    device = {
+      connection: {},
+      emit: spy()
+    };
+
+    driver = new Driver({
+      name: 'driver',
+      device: device
+    });
   });
 
   describe("#constructor", function() {
@@ -30,11 +34,49 @@ describe("Driver", function() {
       expect(driver.connection).to.be.eql(device.connection);
     });
 
-    it("sets @commands to an empty array by default", function() {
+    it("sets @commands to an empty object by default", function() {
       expect(driver.commands).to.be.eql({});
     });
   });
 
+  describe("#setupCommands", function() {
+    beforeEach(function() {
+      driver.proxyMethods = spy();
+    });
+
+    it("snake_cases and proxies methods to @commands for the API", function() {
+      var commands = ["helloWorld", "otherTestCommand"],
+          snake_case = ["hello_world", "other_test_command"];
+
+      commands.forEach(function(cmd) {
+        driver[cmd] = spy();
+      });
+
+      driver.setupCommands(commands);
+
+      for (var i = 0; i < commands.length; i++) {
+        var cmd = commands[i],
+            snake = snake_case[i];
+
+        driver.commands[snake]();
+        expect(driver[cmd]).to.be.called;
+      }
+    });
+
+    it("handles edge cases", function() {
+      var commands = ["HelloWorld", "getPNGStream", "getHSetting"],
+          snake_case = ["hello_world", "get_png_stream", "get_h_setting"];
+
+      commands.forEach(function(cmd) {
+        driver[cmd] = function() {};
+      });
+
+      driver.setupCommands(commands);
+
+      expect(Object.keys(driver.commands)).to.be.eql(snake_case);
+    });
+  });
+
   describe("#start", function() {
     var callback;