Merge remote-tracking branch 'upstream/main' into fix-enum-variant-inconsistency

1 files changed, 38 insertions, 0 deletions

diff --git a/solutions/15_traits/traits3.rs b/solutions/15_traits/traits3.rs
new file mode 100644
index 0000000..747d919
--- /dev/null
+++ b/solutions/15_traits/traits3.rs
@@ -0,0 +1,38 @@
+#![allow(dead_code)]
+
+trait Licensed {
+    fn licensing_info(&self) -> String {
+        "Default license".to_string()
+    }
+}
+
+struct SomeSoftware {
+    version_number: i32,
+}
+
+struct OtherSoftware {
+    version_number: String,
+}
+
+impl Licensed for SomeSoftware {}
+impl Licensed for OtherSoftware {}
+
+fn main() {
+    // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn is_licensing_info_the_same() {
+        let licensing_info = "Default license";
+        let some_software = SomeSoftware { version_number: 1 };
+        let other_software = OtherSoftware {
+            version_number: "v2.0.0".to_string(),
+        };
+        assert_eq!(some_software.licensing_info(), licensing_info);
+        assert_eq!(other_software.licensing_info(), licensing_info);
+    }
+}