Add day 6 solution and test

2019-05/README.md

@@ -157,3 +157,13 @@ Use your `findModuleIndex` function to find the "propulsion" module and then loa
 > *Hint:* Make sure you are building on top of the last challenge. ;P
 >
 > [Click here to access the Help Forum.](https://21day-forum.lighthouselabs.ca/)
+
+#### Challenge #6
+"NAVIGATION SYSTEM needed," LARRY tells you. Navigation is important - you can't move through space without it!
+
+Use your already-defined methods and load in the "navigation" module. It's pretty simple once you have the functions to do it, and LARRY's eyes are finally easing from red back to normal.
+
+> ##### Hint
+> Great news, you have the ability to find a module's index. We need the navigation module's index, and then we want to load that module in, by index.
+>
+> [Click here to access the Help Forum.](https://21day-forum.lighthouselabs.ca/)

2019-05/index.js

@@ -58,7 +58,7 @@ const availableModules = [
     essential: true,
   },
   {
-    name: 'sensors',
+    name: 'navigation',
     size: 8204,
     enabled: true,
     essential: true,
@@ -111,6 +111,6 @@ const findModuleIndex = (name) => {
 
 
 /** EXECUTIONS **/
-const modulesToLoad = ['life-support', 'propulsion'];
+const modulesToLoad = ['life-support', 'propulsion', 'navigation'];
 enableModule(findModuleIndex('life-support'));
 loadModules(findModuleIndices(modulesToLoad));

2019-05/test.js

@@ -62,3 +62,11 @@ test('Challenge #5: `propulsion` module added to shipModules', () => {
   const propulsionModule = availableModules[2];
   expect(shipModules[1]).toEqual(propulsionModule);
 });
+
+// Challenge #6
+test('Challenge #6: `navigation` module added to shipModules', () => {
+  const shipModules = solution.__get__('ship').modules;
+  const availableModules = solution.__get__('availableModules');
+  const navigationModule = availableModules[3];
+  expect(shipModules[2]).toEqual(navigationModule);
+});