Add two-fer

config.json

@@ -41,6 +41,14 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 2
+      },
+      {
+        "slug": "two-fer",
+        "name": "Two Fer",
+        "uuid": "ca6ddfe1-0355-4316-be0f-fefed9943636",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 2
       }
     ]
   },

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

@@ -0,0 +1,24 @@
+# Instructions
+
+Your task is to determine what you will say as you give away the extra cookie.
+
+If you know the person's name (e.g. if they're named Do-yun), then you will say:
+
+```text
+One for Do-yun, one for me.
+```
+
+If you don't know the person's 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 take the offer and (very generously) decide to give the extra cookie to someone else in the queue.

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

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "BNAndras"
+  ],
+  "files": {
+    "solution": [
+      "src/two-fer.art"
+    ],
+    "test": [
+      "tests/test-two-fer.art",
+      "tester.art"
+    ],
+    "example": [
+      ".meta/src/example.art"
+    ]
+  },
+  "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/src/example.art

@@ -0,0 +1,6 @@
+twoFer: function [
+    name
+][
+    switch name=""  -> twoFer "you"
+                    -> "One for " ++ name ++ ", one for me."
+]

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/src/two-fer.art

@@ -0,0 +1,3 @@
+twoFer: function [name][
+    panic "Please implement the twoFer function"
+]

exercises/practice/two-fer/tester.art

@@ -0,0 +1,3 @@
+import {unitt}! 
+
+runTests.failFast findTests "tests"

exercises/practice/two-fer/tests/test-two-fer.art

@@ -0,0 +1,19 @@
+import {unitt}!
+import {src/two-fer}!
+
+suite "Two Fer" [
+    test "no name given" [
+        result: twoFer ""
+        assert -> "One for you, one for me." = result
+    ]
+
+    test.skip "a name given" [
+        result: twoFer "Alice"
+        assert -> "One for Alice, one for me." = result
+    ]
+
+    test.skip "another name given" [
+        result: twoFer "Bob"
+        assert -> "One for Bob, one for me." = result
+    ]
+]