1 files changed, 48 insertions, 0 deletions
diff --git a/exercises/17_tests/tests4.rs b/exercises/17_tests/tests4.rs
new file mode 100644
index 0000000..935d0db
--- /dev/null
+++ b/exercises/17_tests/tests4.rs
@@ -0,0 +1,48 @@
+// tests4.rs
+//
+// Make sure that we're testing for the correct conditions!
+//
+// Execute `rustlings hint tests4` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+struct Rectangle {
+    width: i32,
+    height: i32
+}
+
+impl Rectangle {
+    // Only change the test functions themselves
+    pub fn new(width: i32, height: i32) -> Self {
+        if width <= 0 || height <= 0 {
+            panic!("Rectangle width and height cannot be negative!")
+        }
+        Rectangle {width, height}
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn correct_width_and_height() {
+        // This test should check if the rectangle is the size that we pass into its constructor
+        let rect = Rectangle::new(10, 20);
+        assert_eq!(???, 10); // check width
+        assert_eq!(???, 20); // check height
+    }
+
+    #[test]
+    fn negative_width() {
+        // This test should check if program panics when we try to create rectangle with negative width
+        let _rect = Rectangle::new(-10, 10);
+    }
+
+    #[test]
+    fn negative_height() {
+        // This test should check if program panics when we try to create rectangle with negative height
+        let _rect = Rectangle::new(10, -10);
+    }
+}