From e3e8580f58f3b892f1f0aeffee87d1876f58c15b Mon Sep 17 00:00:00 2001
From: Nenad <nenad@better.giving>
Date: Tue, 18 Jun 2024 06:20:05 +0200
Subject: [PATCH] add hello-world exercise + format config.json

---
 .../hello-world/.docs/instructions.md         | 16 +++++++++++++++
 .../practice/hello-world/.meta/config.json    | 20 +++++++++++++++++++
 .../practice/hello-world/.meta/example.cairo  |  3 +++
 .../practice/hello-world/.meta/tests.toml     | 13 ++++++++++++
 exercises/practice/hello-world/Scarb.toml     |  4 ++++
 exercises/practice/hello-world/src/lib.cairo  |  4 ++++
 .../practice/hello-world/src/tests.cairo      |  7 +++++++
 7 files changed, 67 insertions(+)
 create mode 100644 exercises/practice/hello-world/.docs/instructions.md
 create mode 100644 exercises/practice/hello-world/.meta/config.json
 create mode 100644 exercises/practice/hello-world/.meta/example.cairo
 create mode 100644 exercises/practice/hello-world/.meta/tests.toml
 create mode 100644 exercises/practice/hello-world/Scarb.toml
 create mode 100644 exercises/practice/hello-world/src/lib.cairo
 create mode 100644 exercises/practice/hello-world/src/tests.cairo

diff --git a/exercises/practice/hello-world/.docs/instructions.md b/exercises/practice/hello-world/.docs/instructions.md
new file mode 100644
index 00000000..c9570e48
--- /dev/null
+++ b/exercises/practice/hello-world/.docs/instructions.md
@@ -0,0 +1,16 @@
+# Instructions
+
+The classical introductory exercise.
+Just say "Hello, World!".
+
+["Hello, World!"][hello-world] is the traditional first program for beginning programming in a new language or environment.
+
+The objectives are simple:
+
+- Modify the provided code so that it produces the string "Hello, World!".
+- Run the test suite and make sure that it succeeds.
+- Submit your solution and check it at the website.
+
+If everything goes well, you will be ready to fetch your first real exercise.
+
+[hello-world]: https://en.wikipedia.org/wiki/%22Hello,_world!%22_program
diff --git a/exercises/practice/hello-world/.meta/config.json b/exercises/practice/hello-world/.meta/config.json
new file mode 100644
index 00000000..c7e88cfb
--- /dev/null
+++ b/exercises/practice/hello-world/.meta/config.json
@@ -0,0 +1,20 @@
+{
+  "authors": [
+    "misicnenad"
+  ],
+  "files": {
+    "solution": [
+      "src/lib.cairo",
+      "Scarb.toml"
+    ],
+    "test": [
+      "src/tests.cairo"
+    ],
+    "example": [
+      ".meta/example.cairo"
+    ]
+  },
+  "blurb": "Exercism's classic introductory exercise. Just say \"Hello, World!\".",
+  "source": "This is an exercise to introduce users to using Exercism",
+  "source_url": "https://en.wikipedia.org/wiki/%22Hello,_world!%22_program"
+}
diff --git a/exercises/practice/hello-world/.meta/example.cairo b/exercises/practice/hello-world/.meta/example.cairo
new file mode 100644
index 00000000..d203326b
--- /dev/null
+++ b/exercises/practice/hello-world/.meta/example.cairo
@@ -0,0 +1,3 @@
+fn hello() -> ByteArray {
+    "Hello, World!"
+}
diff --git a/exercises/practice/hello-world/.meta/tests.toml b/exercises/practice/hello-world/.meta/tests.toml
new file mode 100644
index 00000000..73466d67
--- /dev/null
+++ b/exercises/practice/hello-world/.meta/tests.toml
@@ -0,0 +1,13 @@
+# 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.
+
+[af9ffe10-dc13-42d8-a742-e7bdafac449d]
+description = "Say Hi!"
diff --git a/exercises/practice/hello-world/Scarb.toml b/exercises/practice/hello-world/Scarb.toml
new file mode 100644
index 00000000..c09a6b38
--- /dev/null
+++ b/exercises/practice/hello-world/Scarb.toml
@@ -0,0 +1,4 @@
+[package]
+name = "hello_world"
+version = "0.1.0"
+edition = "2023_11"
diff --git a/exercises/practice/hello-world/src/lib.cairo b/exercises/practice/hello-world/src/lib.cairo
new file mode 100644
index 00000000..e69c7b64
--- /dev/null
+++ b/exercises/practice/hello-world/src/lib.cairo
@@ -0,0 +1,4 @@
+// ByteArray is a string that's not limited to 31 characters, you'll learn more about this later
+fn hello() -> ByteArray {
+    "Goodbye, Mars!"
+}
diff --git a/exercises/practice/hello-world/src/tests.cairo b/exercises/practice/hello-world/src/tests.cairo
new file mode 100644
index 00000000..babf4ce3
--- /dev/null
+++ b/exercises/practice/hello-world/src/tests.cairo
@@ -0,0 +1,7 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn hello_world() {
+        assert_eq!(hello_world::hello(), "Hello, World!");
+    }
+}