From 3cf30fafeeb63330bda3e6e2cbfb6d2d3ada7580 Mon Sep 17 00:00:00 2001
From: Jonas Scheffner <dev.scheffner@outlook.de>
Date: Thu, 26 Apr 2018 14:03:19 +0200
Subject: [PATCH 1/4] robot-simulator: fix test that didn't fail if nothing was
 thrown

---
 exercises/robot-simulator/robot-simulator.spec.js | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/exercises/robot-simulator/robot-simulator.spec.js b/exercises/robot-simulator/robot-simulator.spec.js
index d71af12324..bf9155a71f 100644
--- a/exercises/robot-simulator/robot-simulator.spec.js
+++ b/exercises/robot-simulator/robot-simulator.spec.js
@@ -13,11 +13,7 @@ describe('Robot', () => {
   });
 
   xtest('invalid robot bearing', () => {
-    try {
-      robot.orient('crood');
-    } catch (exception) {
-      expect(exception).toEqual('Invalid Robot Bearing');
-    }
+    expect(() => robot.orient('crood')).toThrow('Invalid Robot Bearing');
   });
 
   xtest('turn right from north', () => {

From 575fc91f15932cc73bdb107fcd3b84bcc77a0626 Mon Sep 17 00:00:00 2001
From: Jonas Scheffner <dev.scheffner@outlook.de>
Date: Thu, 26 Apr 2018 14:37:48 +0200
Subject: [PATCH 2/4] robot-simulator: fix example

---
 exercises/robot-simulator/example.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/exercises/robot-simulator/example.js b/exercises/robot-simulator/example.js
index f086a79ec8..75f3449a17 100644
--- a/exercises/robot-simulator/example.js
+++ b/exercises/robot-simulator/example.js
@@ -9,6 +9,11 @@ class Robot {
   }
 
   orient(direction) {
+    const validDirections = ['north', 'south', 'east', 'west'];
+    if (!validDirections.includes(direction)) {
+      throw 'Invalid Robot Bearing';
+    }
+
     this.bearing = direction;
     return `The robot is pointed ${direction}`;
   }

From e2d6f7f368076bd7b5c8b96d4764316e7c5d6e62 Mon Sep 17 00:00:00 2001
From: Jonas Scheffner <dev.scheffner@outlook.de>
Date: Fri, 1 Jun 2018 18:19:03 +0200
Subject: [PATCH 3/4] throw custom exception if input invalid

---
 exercises/robot-simulator/example.js              | 9 ++++++++-
 exercises/robot-simulator/robot-simulator.spec.js | 6 ++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/exercises/robot-simulator/example.js b/exercises/robot-simulator/example.js
index 75f3449a17..e4d9c48188 100644
--- a/exercises/robot-simulator/example.js
+++ b/exercises/robot-simulator/example.js
@@ -1,3 +1,10 @@
+export class InvalidInputError extends Error {
+  constructor(message) {
+    super();
+    this.message = message || 'Invalid Input';
+  }
+}
+
 class Robot {
   constructor() {
     this.coordinates = [0, 0];
@@ -11,7 +18,7 @@ class Robot {
   orient(direction) {
     const validDirections = ['north', 'south', 'east', 'west'];
     if (!validDirections.includes(direction)) {
-      throw 'Invalid Robot Bearing';
+      throw new InvalidInputError('Invalid Robot Bearing');
     }
 
     this.bearing = direction;
diff --git a/exercises/robot-simulator/robot-simulator.spec.js b/exercises/robot-simulator/robot-simulator.spec.js
index bf9155a71f..7552e57cb7 100644
--- a/exercises/robot-simulator/robot-simulator.spec.js
+++ b/exercises/robot-simulator/robot-simulator.spec.js
@@ -1,9 +1,10 @@
 import Robot from './robot-simulator';
+import { InvalidInputError } from './robot-simulator';
 
 describe('Robot', () => {
   const robot = new Robot();
 
-  test('robot bearing', () => {
+  xtest('robot bearing', () => {
     const directions = ['east', 'west', 'north', 'south'];
 
     directions.forEach((currentDirection) => {
@@ -13,7 +14,8 @@ describe('Robot', () => {
   });
 
   xtest('invalid robot bearing', () => {
-    expect(() => robot.orient('crood')).toThrow('Invalid Robot Bearing');
+    expect(InvalidInputError.prototype).toBeInstanceOf(Error);
+    expect(() => robot.orient('crood')).toThrow(InvalidInputError);
   });
 
   xtest('turn right from north', () => {

From 2a028468b23669a5873565706ff454579ec28631 Mon Sep 17 00:00:00 2001
From: Jonas Scheffner <dev.scheffner@outlook.de>
Date: Fri, 1 Jun 2018 18:26:44 +0200
Subject: [PATCH 4/4] stop skipping first test

---
 exercises/robot-simulator/robot-simulator.spec.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exercises/robot-simulator/robot-simulator.spec.js b/exercises/robot-simulator/robot-simulator.spec.js
index 7552e57cb7..2a46dcc534 100644
--- a/exercises/robot-simulator/robot-simulator.spec.js
+++ b/exercises/robot-simulator/robot-simulator.spec.js
@@ -4,7 +4,7 @@ import { InvalidInputError } from './robot-simulator';
 describe('Robot', () => {
   const robot = new Robot();
 
-  xtest('robot bearing', () => {
+  test('robot bearing', () => {
     const directions = ['east', 'west', 'north', 'south'];
 
     directions.forEach((currentDirection) => {