From fc1d4fbb98323b34829da9393f366fb07d2f1605 Mon Sep 17 00:00:00 2001
From: Federico Igne <git@federicoigne.com>
Date: Mon, 4 Jan 2021 13:59:27 +0000
Subject: [rust] Queen Attack

---
 rust/queen-attack/tests/queen-attack.rs | 78 +++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 rust/queen-attack/tests/queen-attack.rs

(limited to 'rust/queen-attack/tests/queen-attack.rs')

diff --git a/rust/queen-attack/tests/queen-attack.rs b/rust/queen-attack/tests/queen-attack.rs
new file mode 100644
index 0000000..9eea61b
--- /dev/null
+++ b/rust/queen-attack/tests/queen-attack.rs
@@ -0,0 +1,78 @@
+use queen_attack::*;
+
+#[test]
+fn chess_position_on_the_board_is_some() {
+    assert!(ChessPosition::new(2, 4).is_some());
+}
+
+#[test]
+fn chess_position_off_the_board_is_none() {
+    assert!(ChessPosition::new(-1, 2).is_none());
+
+    assert!(ChessPosition::new(8, 2).is_none());
+
+    assert!(ChessPosition::new(5, -1).is_none());
+
+    assert!(ChessPosition::new(5, 8).is_none());
+}
+
+#[test]
+fn queen_is_created_with_a_valid_position() {
+    Queen::new(ChessPosition::new(2, 4).unwrap());
+}
+
+#[test]
+fn queens_that_can_not_attack() {
+    let white_queen = Queen::new(ChessPosition::new(2, 4).unwrap());
+    let black_queen = Queen::new(ChessPosition::new(6, 6).unwrap());
+
+    assert!(!white_queen.can_attack(&black_queen));
+}
+
+#[test]
+fn queens_on_the_same_rank_can_attack() {
+    let white_queen = Queen::new(ChessPosition::new(2, 4).unwrap());
+    let black_queen = Queen::new(ChessPosition::new(2, 6).unwrap());
+
+    assert!(white_queen.can_attack(&black_queen));
+}
+
+#[test]
+fn queens_on_the_same_file_can_attack() {
+    let white_queen = Queen::new(ChessPosition::new(4, 5).unwrap());
+    let black_queen = Queen::new(ChessPosition::new(3, 5).unwrap());
+
+    assert!(white_queen.can_attack(&black_queen));
+}
+
+#[test]
+fn queens_on_the_same_diagonal_can_attack_one() {
+    let white_queen = Queen::new(ChessPosition::new(2, 2).unwrap());
+    let black_queen = Queen::new(ChessPosition::new(0, 4).unwrap());
+
+    assert!(white_queen.can_attack(&black_queen));
+}
+
+#[test]
+fn queens_on_the_same_diagonal_can_attack_two() {
+    let white_queen = Queen::new(ChessPosition::new(2, 2).unwrap());
+    let black_queen = Queen::new(ChessPosition::new(3, 1).unwrap());
+
+    assert!(white_queen.can_attack(&black_queen));
+}
+
+#[test]
+fn queens_on_the_same_diagonal_can_attack_three() {
+    let white_queen = Queen::new(ChessPosition::new(2, 2).unwrap());
+    let black_queen = Queen::new(ChessPosition::new(1, 1).unwrap());
+
+    assert!(white_queen.can_attack(&black_queen));
+}
+
+#[test]
+fn queens_on_the_same_diagonal_can_attack_four() {
+    let white_queen = Queen::new(ChessPosition::new(2, 2).unwrap());
+    let black_queen = Queen::new(ChessPosition::new(5, 5).unwrap());
+
+    assert!(white_queen.can_attack(&black_queen));
+}
-- 
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