From 0e809e78c5c0a1268af391070abb1cf41faa6453 Mon Sep 17 00:00:00 2001
From: Augusto <aug.ornelas@gmail.com>
Date: Mon, 28 Dec 2020 21:11:15 +0000
Subject: [PATCH] Add subject and test of the exercise `closures`

---
 rust/tests/closures_test/Cargo.lock  | 12 ++++++++++
 rust/tests/closures_test/Cargo.toml  | 10 +++++++++
 rust/tests/closures_test/src/main.rs | 28 +++++++++++++++++++++++
 subjects/closures/README.md          | 33 ++++++++++++++++++++++++++++
 4 files changed, 83 insertions(+)
 create mode 100644 rust/tests/closures_test/Cargo.lock
 create mode 100644 rust/tests/closures_test/Cargo.toml
 create mode 100644 rust/tests/closures_test/src/main.rs
 create mode 100644 subjects/closures/README.md

diff --git a/rust/tests/closures_test/Cargo.lock b/rust/tests/closures_test/Cargo.lock
new file mode 100644
index 000000000..4151173cb
--- /dev/null
+++ b/rust/tests/closures_test/Cargo.lock
@@ -0,0 +1,12 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "closures"
+version = "0.1.0"
+
+[[package]]
+name = "closures_test"
+version = "0.1.0"
+dependencies = [
+ "closures",
+]
diff --git a/rust/tests/closures_test/Cargo.toml b/rust/tests/closures_test/Cargo.toml
new file mode 100644
index 000000000..064a1c7ee
--- /dev/null
+++ b/rust/tests/closures_test/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "closures_test"
+version = "0.1.0"
+authors = ["Augusto <aug.ornelas@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+closures = { path = "../../../../rust-piscine-solutions/closures"}
diff --git a/rust/tests/closures_test/src/main.rs b/rust/tests/closures_test/src/main.rs
new file mode 100644
index 000000000..d4c63e016
--- /dev/null
+++ b/rust/tests/closures_test/src/main.rs
@@ -0,0 +1,28 @@
+// Using closures and iterators create a function,
+// first_fifty_even_square() that returns the
+// first 50 pair numbers squares that it's [4, 16, 36, ..., 10000].
+
+use closures::*;
+
+fn main() {
+	println!("Hello, world!");
+	let v1 = first_fifty_even_square();
+
+	println!("All elements in {:?}, len = {}", v1, v1.len());
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+
+	#[test]
+	fn test() {
+		let v1 = vec![
+			4, 16, 36, 64, 100, 144, 196, 256, 324, 400, 484, 576, 676, 784, 900, 1024, 1156, 1296,
+			1444, 1600, 1764, 1936, 2116, 2304, 2500, 2704, 2916, 3136, 3364, 3600, 3844, 4096,
+			4356, 4624, 4900, 5184, 5476, 5776, 6084, 6400, 6724, 7056, 7396, 7744, 8100, 8464,
+			8836, 9216, 9604, 10000,
+		];
+		assert_eq!(v1, first_fifty_even_square());
+	}
+}
diff --git a/subjects/closures/README.md b/subjects/closures/README.md
new file mode 100644
index 000000000..6a34dd26d
--- /dev/null
+++ b/subjects/closures/README.md
@@ -0,0 +1,33 @@
+## closures
+
+### Instructions
+
+Using closures and iterators create a function, `first_fifty_even_square` that returns the first 50
+
+### Expected Functions
+
+```rust
+fn first_fifty_even_square() -> Vec<i32> {
+}
+```
+
+### Usage
+
+Here is a program to test your function.
+
+```rust
+fn main() {
+	println!("Hello, world!");
+	let v1 = first_fifty_even_square();
+
+	println!("All elements in {:?}, len = {}", v1, v1.len());
+}
+```
+
+And its output
+
+```console
+student@ubuntu:~/[[ROOT]]/test$ cargo run
+All elements in [4, 16, 36, ..., 10000], len = 50
+student@ubuntu:~/[[ROOT]]/test$
+```