Add two-fer exercise (#196)

* Add two-fer exercise

* Undo VSCode reformatting of config.json

* Remove default value from TwoFer.cfc

config.json

@@ -294,6 +294,14 @@
         "prerequisites": [],
         "difficulty": 5
       },
+      {
+        "slug": "two-fer",
+        "name": "Two Fer",
+        "uuid": "7a64fd35-c6f0-4c0c-90c8-f72bcca77a93",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 1
+      },
       {
         "slug": "run-length-encoding",
         "name": "Run Length Encoding",

exercises/practice/two-fer/.docs/instructions.md

@@ -0,0 +1,25 @@
+# Instructions
+
+Your task is to determine what you will say as you give away the extra cookie.
+
+If your friend likes cookies, and is named Do-yun, then you will say:
+
+```text
+One for Do-yun, one for me.
+```
+
+If your friend doesn't like cookies, you give the cookie to the next person in line at the bakery.
+Since you don't know their name, you will say _you_ instead.
+
+```text
+One for you, one for me.
+```
+
+Here are some examples:
+
+| Name   | Dialogue                    |
+| :----- | :-------------------------- |
+| Alice  | One for Alice, one for me.  |
+| Bohdan | One for Bohdan, one for me. |
+|        | One for you, one for me.    |
+| Zaphod | One for Zaphod, one for me. |

exercises/practice/two-fer/.docs/introduction.md

@@ -0,0 +1,8 @@
+# Introduction
+
+In some English accents, when you say "two for" quickly, it sounds like "two fer".
+Two-for-one is a way of saying that if you buy one, you also get one for free.
+So the phrase "two-fer" often implies a two-for-one offer.
+
+Imagine a bakery that has a holiday offer where you can buy two cookies for the price of one ("two-fer one!").
+You go for the offer and (very generously) decide to give the extra cookie to a friend.

exercises/practice/two-fer/.meta/Example.cfc

@@ -0,0 +1,13 @@
+/**
+* Your implementation of the TwoFer exercise
+*/
+component {
+
+	/**
+	* @returns 
+	*/
+	function twoFer( name="you" ) {
+		return "One for " & name & ", one for me."
+	}
+
+}

exercises/practice/two-fer/.meta/ExampleTest.cfc

@@ -0,0 +1,7 @@
+component extends="TwoFerTest" {
+
+	function beforeAll(){
+	  SUT = createObject( 'Solution' );
+	}
+
+}

exercises/practice/two-fer/.meta/config.json

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "BNAndras"
+  ],
+  "files": {
+    "solution": [
+      "TwoFer.cfc"
+    ],
+    "test": [
+      "TwoFerTest.cfc"
+    ],
+    "example": [
+      ".meta/Example.cfc", 
+      ".meta/ExampleTest.cfc"
+    ]
+  },
+  "blurb": "Create a sentence of the form \"One for X, one for me.\".",
+  "source_url": "https://github.com/exercism/problem-specifications/issues/757"
+}

exercises/practice/two-fer/.meta/tests.toml

@@ -0,0 +1,19 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[1cf3e15a-a3d7-4a87-aeb3-ba1b43bc8dce]
+description = "no name given"
+
+[b4c6dbb8-b4fb-42c2-bafd-10785abe7709]
+description = "a name given"
+
+[3549048d-1a6e-4653-9a79-b0bda163e8d5]
+description = "another name given"

exercises/practice/two-fer/TestRunner.cfc

@@ -0,0 +1,103 @@
+/**
+* I am a CommandBox task runner which you can use to test your implementation of this exercise against the 
+* provided test suite.  To use me, open the CommandBox CLI and run this:
+* 
+* CommandBox> task run TestRunner
+*
+* To start up a test watcher that will automatically rerun the test suite every time you save a file change, run this:
+*
+* CommandBox> task run TestRunner --watcher
+*
+*/
+component {
+
+	/**
+	* @solution Runs the tests against the solution
+	* @watcher Start up a file watch that re-runs the tests on file changes. Use Ctrl-C to stop
+	*/
+	function run( boolean solution=false, boolean watcher=false ) {
+
+		ensureTestBox();
+
+		if( watcher ) {
+
+			// Tabula rasa
+			command( 'cls' ).run();
+
+			// Start watcher
+			watch()
+				.paths( '*.cfc' )
+				.inDirectory( getCWD() )
+				.withDelay( 500 )
+				.onChange( function() {
+
+					// Clear the screen
+					command( 'cls' )
+						.run();
+
+					// This is neccessary so changes to tests get picked up right away.
+					pagePoolClear();	
+
+					runTests( solution );
+
+				} )
+				.start();
+
+		} else {
+			runTests( solution );
+		}			
+
+	}
+
+	/**
+	* Make sure the TestBox framework is installed
+	*/
+	private function ensureTestBox() {
+		var excerciseRoot = getCWD();
+		var testBoxRoot = excerciseRoot & '/testbox';
+
+		if( !directoryExists( testBoxRoot ) ) {
+
+			print.boldYellowLine( 'Installing some missing dependencies for you!' ).toConsole();
+			command( 'install' )
+				.inWorkingDirectory( excerciseRoot )
+				.run();
+		}
+
+		// Bootstrap TestBox framework
+		filesystemUtil.createMapping( '/testbox', testBoxRoot );
+	}
+
+	/**
+	* Invoke TestBox to run the test suite
+	*/
+	private function runTests( boolean solution=false ) {
+
+		// Create TestBox and run the tests
+		testData = new testbox.system.TestBox()
+			.runRaw( directory = {
+				// Find all CFCs...
+				mapping = filesystemUtil.makePathRelative( getCWD() ),
+				// ... in this directory ...
+				recurse = false,
+				// ... whose name ends in "test"
+				filter = function( path ) {
+					return path.reFind( ( solution ? 'Solution' : '' ) & 'Test.cfc$' );
+				 }
+			} )
+			.getMemento();
+
+		// Print out the results with ANSI formatting for the CLI
+		getInstance( 'CLIRenderer@testbox-commands' )
+			.render( print, testData, true );
+
+		print.toConsole();
+
+		// Set proper exit code
+		if( testData.totalFail || testData.totalError ) {
+			setExitCode( 1 );
+		}
+	}
+
+}
+

exercises/practice/two-fer/TwoFer.cfc

@@ -0,0 +1,13 @@
+/**
+* Your implementation of the TwoFer exercise
+*/
+component {
+
+	/**
+	* @returns 
+	*/
+	function twoFer( name ) {
+		// Implement me here
+	}
+
+}

exercises/practice/two-fer/TwoFerTest.cfc

@@ -0,0 +1,27 @@
+component extends="testbox.system.BaseSpec" {
+
+	function beforeAll(){
+	  SUT = createObject( 'TwoFer' );
+	}
+
+	function run(){
+
+		describe( "My TwoFer class", function(){			
+
+			it( 'no name given', function(){
+				expect( SUT.twoFer() ).toBe( 'One for you, one for me.' );
+			});
+
+			it( 'a name given', function(){
+				expect( SUT.twoFer( name='Alice' ) ).toBe( 'One for Alice, one for me.' );
+			});
+
+			it( 'another name given', function(){
+				expect( SUT.twoFer( name='Bob' ) ).toBe( 'One for Bob, one for me.' );
+			});
+
+		});
+
+	}
+
+}

exercises/practice/two-fer/box.json

@@ -0,0 +1,8 @@
+{
+    "dependencies":{
+        "testbox":"^2.5.0+107"
+    },
+    "installPaths":{
+        "testbox":"testbox/"
+    }
+}

exercises/practice/two-fer/index.cfm

@@ -0,0 +1,37 @@
+<!--- 
+
+This file will only be used if you want to start up a web server in this directory.  You can do so by running:
+
+$> box
+CommandBox> install
+CommandBox> server start
+
+However, this is not necessary unless you really just want to use the HTML reporters on TestBox.  
+Ideally, you'll skip the need for this file entirely and just run the tests directly frm the CLI like this:
+
+CommandBox> task run TestRunner
+
+ --->
+<cfsetting showDebugOutput="false">
+<cfparam name="url.reporter" 		default="simple">
+<cfscript>
+	// get a list of all CFCs in this folder whose name looks like "XXXTest.cfc"
+	// And turn it into compnent path relative to the web root
+	url.bundles = directoryList(
+			path=expandPath( '/' ),
+			filter='*Test.cfc' )
+		.map( function( path ) {
+			return path
+					.replaceNoCase( expandPath( '/' ), '' )
+					.left( -4 )
+		} )
+		.toList();
+</cfscript>
+
+<!--- Ensure TestBox --->
+<cfif fileExists( "/testbox/system/runners/HTMLRunner.cfm" )>
+	<!--- Include the TestBox HTML Runner --->
+	<cfinclude template="/testbox/system/runners/HTMLRunner.cfm">
+<cfelse>
+	Oops, you don't have TestBox installed yet! Please run <b>box install</b> from the root of your excercise folder and refresh this page.	
+</cfif>