Added bugs 9 - 12

joostlubach · joostlubach · commit 73c6efb40ae3 · 2016-11-28T12:01:24.000+01:00
diff --git a/fundamentals/bug-challenge-es6/__tests__/bug-challenge-tests.js b/fundamentals/bug-challenge-es6/__tests__/bug-challenge-tests.js
@@ -130,4 +130,55 @@ describe('Bug challenge ES6', () => {
 
   });
 
+  describe('bug9', () => {
+
+    it("should list only BMWs", () => {
+      challenge.bug9();
+
+      expect(console.logs).toEqual([
+        'BMW i8',
+        'BMW M3'
+      ]);
+    });
+
+  });
+
+  describe('bug10', () => {
+
+    it("should print 'Help'", () => {
+      challenge.bug10();
+
+      expect(console.logs).toEqual([
+        'Help'
+      ]);
+    });
+
+  });
+
+  describe('bug11', () => {
+
+    it("should correctly add players Alice & Bob", () => {
+      challenge.bug11();
+
+      expect(console.logs).toEqual([
+        'Player Alice has 0 points',
+        'Player Bob has 0 points'
+      ]);
+    });
+
+  });
+
+  describe('bug12', () => {
+
+    it("should not change the value of the outer y", () => {
+      challenge.bug12();
+
+      expect(console.logs).toEqual([
+        'Printing vector at (6, 7)',
+        'y=5'
+      ]);
+    });
+
+  });
+
 });
diff --git a/fundamentals/bug-challenge-es6/bug-challenge.js b/fundamentals/bug-challenge-es6/bug-challenge.js
@@ -132,4 +132,77 @@ export default class BugChallenge {
       }
     }
 
+    bug9() {
+      const cars = [{
+        make: 'Volvo',
+        type: 'S90'
+      }, {
+        make: 'BMW',
+        type: 'i8'
+      }, {
+        make: 'BMW',
+        type: 'M3'
+      }, {
+        make: 'Audi',
+        type: 'A6'
+      }];
+
+      function findCars(make) {
+        return cars.filter(car => car.make = make);
+      }
+
+      for (let bmw of findCars('BMW')) {
+        console.log(`${bmw.make} ${bmw.type}`);
+      }
+    }
+
+    bug10() {
+      const command = 'printHelp';
+
+      switch (command) {
+        case 'printMath':
+          console.log(`√9=${Math.sqrt(9)}`);
+        case 'printHelp':
+          console.log('Help');
+        case 'quit':
+          console.log('Quitting');
+      }
+    }
+
+    bug11() {
+      class Game {
+        constructor() {
+          this.players = [];
+        }
+
+        addPlayers(names) {
+          names.forEach(function (name) {
+            this.players.push({name, points: 0});
+          });
+        }
+      }
+
+      const game = new Game();
+      game.addPlayers(['Alice', 'Bob']);
+
+      for (let player of game.players) {
+        console.log(`Player ${player.name} has ${player.points} points`);
+      }
+    }
+
+    bug12() {
+      let y = 5;
+
+      function printVector() {
+        let x = 6;
+            y = 7;
+
+        console.log(`Printing vector at (${x}, ${y})`);
+      }
+
+      printVector();
+      console.log(`y=${y}`);
+    }
+
+
 }
