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-rw-r--r--exercises/07_structs/README.md8
-rw-r--r--exercises/07_structs/structs1.rs51
-rw-r--r--exercises/07_structs/structs2.rs50
-rw-r--r--exercises/07_structs/structs3.rs88
4 files changed, 197 insertions, 0 deletions
diff --git a/exercises/07_structs/README.md b/exercises/07_structs/README.md
new file mode 100644
index 0000000..3fc1fdc
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+++ b/exercises/07_structs/README.md
@@ -0,0 +1,8 @@
+# Structs
+
+Rust has three struct types: a classic C struct, a tuple struct, and a unit struct.
+
+## Further information
+
+- [Structures](https://doc.rust-lang.org/book/ch05-01-defining-structs.html)
+- [Method Syntax](https://doc.rust-lang.org/book/ch05-03-method-syntax.html)
diff --git a/exercises/07_structs/structs1.rs b/exercises/07_structs/structs1.rs
new file mode 100644
index 0000000..5fa5821
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+++ b/exercises/07_structs/structs1.rs
@@ -0,0 +1,51 @@
+// structs1.rs
+//
+// Address all the TODOs to make the tests pass!
+//
+// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+struct ColorClassicStruct {
+ // TODO: Something goes here
+}
+
+struct ColorTupleStruct(/* TODO: Something goes here */);
+
+#[derive(Debug)]
+struct UnitLikeStruct;
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn classic_c_structs() {
+ // TODO: Instantiate a classic c struct!
+ // let green =
+
+ assert_eq!(green.red, 0);
+ assert_eq!(green.green, 255);
+ assert_eq!(green.blue, 0);
+ }
+
+ #[test]
+ fn tuple_structs() {
+ // TODO: Instantiate a tuple struct!
+ // let green =
+
+ assert_eq!(green.0, 0);
+ assert_eq!(green.1, 255);
+ assert_eq!(green.2, 0);
+ }
+
+ #[test]
+ fn unit_structs() {
+ // TODO: Instantiate a unit-like struct!
+ // let unit_like_struct =
+ let message = format!("{:?}s are fun!", unit_like_struct);
+
+ assert_eq!(message, "UnitLikeStructs are fun!");
+ }
+}
diff --git a/exercises/07_structs/structs2.rs b/exercises/07_structs/structs2.rs
new file mode 100644
index 0000000..328567f
--- /dev/null
+++ b/exercises/07_structs/structs2.rs
@@ -0,0 +1,50 @@
+// structs2.rs
+//
+// Address all the TODOs to make the tests pass!
+//
+// Execute `rustlings hint structs2` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+#[derive(Debug)]
+struct Order {
+ name: String,
+ year: u32,
+ made_by_phone: bool,
+ made_by_mobile: bool,
+ made_by_email: bool,
+ item_number: u32,
+ count: u32,
+}
+
+fn create_order_template() -> Order {
+ Order {
+ name: String::from("Bob"),
+ year: 2019,
+ made_by_phone: false,
+ made_by_mobile: false,
+ made_by_email: true,
+ item_number: 123,
+ count: 0,
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn your_order() {
+ let order_template = create_order_template();
+ // TODO: Create your own order using the update syntax and template above!
+ // let your_order =
+ assert_eq!(your_order.name, "Hacker in Rust");
+ assert_eq!(your_order.year, order_template.year);
+ assert_eq!(your_order.made_by_phone, order_template.made_by_phone);
+ assert_eq!(your_order.made_by_mobile, order_template.made_by_mobile);
+ assert_eq!(your_order.made_by_email, order_template.made_by_email);
+ assert_eq!(your_order.item_number, order_template.item_number);
+ assert_eq!(your_order.count, 1);
+ }
+}
diff --git a/exercises/07_structs/structs3.rs b/exercises/07_structs/structs3.rs
new file mode 100644
index 0000000..7cda5af
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+++ b/exercises/07_structs/structs3.rs
@@ -0,0 +1,88 @@
+// structs3.rs
+//
+// Structs contain data, but can also have logic. In this exercise we have
+// defined the Package struct and we want to test some logic attached to it.
+// Make the code compile and the tests pass!
+//
+// Execute `rustlings hint structs3` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+#[derive(Debug)]
+struct Package {
+ sender_country: String,
+ recipient_country: String,
+ weight_in_grams: u32,
+}
+
+impl Package {
+ fn new(sender_country: String, recipient_country: String, weight_in_grams: u32) -> Package {
+ if weight_in_grams < 10 {
+ // This is not how you should handle errors in Rust,
+ // but we will learn about error handling later.
+ panic!("Can not ship a package with weight below 10 grams.")
+ } else {
+ Package {
+ sender_country,
+ recipient_country,
+ weight_in_grams,
+ }
+ }
+ }
+
+ fn is_international(&self) -> ??? {
+ // Something goes here...
+ }
+
+ fn get_fees(&self, cents_per_gram: u32) -> ??? {
+ // Something goes here...
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ #[should_panic]
+ fn fail_creating_weightless_package() {
+ let sender_country = String::from("Spain");
+ let recipient_country = String::from("Austria");
+
+ Package::new(sender_country, recipient_country, 5);
+ }
+
+ #[test]
+ fn create_international_package() {
+ let sender_country = String::from("Spain");
+ let recipient_country = String::from("Russia");
+
+ let package = Package::new(sender_country, recipient_country, 1200);
+
+ assert!(package.is_international());
+ }
+
+ #[test]
+ fn create_local_package() {
+ let sender_country = String::from("Canada");
+ let recipient_country = sender_country.clone();
+
+ let package = Package::new(sender_country, recipient_country, 1200);
+
+ assert!(!package.is_international());
+ }
+
+ #[test]
+ fn calculate_transport_fees() {
+ let sender_country = String::from("Spain");
+ let recipient_country = String::from("Spain");
+
+ let cents_per_gram = 3;
+
+ let package = Package::new(sender_country, recipient_country, 1500);
+
+ assert_eq!(package.get_fees(cents_per_gram), 4500);
+ assert_eq!(package.get_fees(cents_per_gram * 2), 9000);
+ }
+}