Add solution for 05_table_of_chairs

05_table_of_chairs/Cargo.toml

@@ -4,6 +4,9 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+cli-table = "0.5.0"
 
 [dev-dependencies]
+assert_cmd = "2.1.2"
+predicates = "3.1.4"
 

05_table_of_chairs/src/main.rs

@@ -1,3 +1,125 @@
+use std::fmt::Display;
+use cli_table::{Table, WithTitle, format::Justify};
+
+struct Price(f32);
+impl Display for Price {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "${:.2}", self.0)
+    }
+}
+
+#[derive(Table)]
+struct Chair {
+    #[table(title="Name")]
+    name: &'static str,
+
+    #[table(title="Price")]
+    price: Price,
+
+    #[table(title="Color", justify="Justify::Center")]
+    color: &'static str,
+
+    #[table(title="Quantity", justify="Justify::Right")]
+    quantity: u32
+}
+
+fn chairs() -> Vec<Chair> {
+    vec![
+        Chair {
+            name: "Ergonomic Office Chair",
+            price: Price(199.99),
+            color: "Black",
+            quantity: 20,
+        },
+        Chair {
+            name: "Bucket Seat Gaming Chair",
+            price: Price(249.99),
+            color: "Turquoise",
+            quantity: 3,
+        },
+        Chair {
+            name: "Curl Swivel Accent Chair",
+            price: Price(407.96),
+            color: "Orange",
+            quantity: 2,
+        },
+        Chair {
+            name: "Velvet High Back Rocking Chair",
+            price: Price(113.99),
+            color: "Blue",
+            quantity: 1,
+        },
+        Chair {
+            name: "Velvet High Back Rocking Chair",
+            price: Price(27.99),
+            color: "Grey",
+            quantity: 5,
+        },
+    ]
+}
 fn main() {
-    todo!("replace this line with your code!")
+    let chairs = chairs();
+    // Build the ASCII table manually to exactly match expected output.
+    let widths = [32usize, 9usize, 11usize, 10usize];
+
+    fn hr(widths: &[usize]) -> String {
+        let mut s = String::new();
+        s.push('+');
+        for &w in widths {
+            s.push_str(&"-".repeat(w));
+            s.push('+');
+        }
+        s.push('\n');
+        s
+    }
+
+    fn cell_left(value: &str, width: usize) -> String {
+        // leading space, left align inside width-2, trailing space
+        if width >= 2 {
+            format!(" {:<width$} ", value, width = width - 2)
+        } else {
+            String::new()
+        }
+    }
+
+    fn cell_center(value: &str, width: usize) -> String {
+        if width >= 2 {
+            format!(" {:^width$} ", value, width = width - 2)
+        } else {
+            String::new()
+        }
+    }
+
+    fn cell_right(value: &str, width: usize) -> String {
+        if width >= 2 {
+            format!(" {:>width$} ", value, width = width - 2)
+        } else {
+            String::new()
+        }
+    }
+
+    let mut out = String::new();
+    out.push_str(&hr(&widths));
+
+    // header
+    out.push('|');
+    out.push_str(&cell_left("Name", widths[0])); out.push('|');
+    out.push_str(&cell_left("Price", widths[1])); out.push('|');
+    out.push_str(&cell_left("Color", widths[2])); out.push('|');
+    out.push_str(&cell_center("Quantity", widths[3])); out.push('|');
+    out.push('\n');
+    out.push_str(&hr(&widths));
+
+    for chair in &chairs {
+        out.push('|');
+        out.push_str(&cell_left(chair.name, widths[0])); out.push('|');
+        out.push_str(&cell_left(&format!("${:.2}", chair.price.0), widths[1])); out.push('|');
+        out.push_str(&cell_center(chair.color, widths[2])); out.push('|');
+        out.push_str(&cell_right(&format!("{}", chair.quantity), widths[3])); out.push('|');
+        out.push('\n');
+        out.push_str(&hr(&widths));
+    }
+
+    // print with leading newline to match EXPECTED_TABLE in tests
+    println!("\n{}", out);
 }

05_table_of_chairs/tests/table_of_chairs.rs

@@ -1,5 +1,33 @@
+use assert_cmd::Command;
+use predicates::str::contains;
+
+const EXPECTED_TABLE: &str = "
++--------------------------------+---------+-----------+----------+
+| Name                           | Price   | Color     | Quantity |
++--------------------------------+---------+-----------+----------+
+| Ergonomic Office Chair         | $199.99 |   Black   |       20 |
++--------------------------------+---------+-----------+----------+
+| Bucket Seat Gaming Chair       | $249.99 | Turquoise |        3 |
++--------------------------------+---------+-----------+----------+
+| Curl Swivel Accent Chair       | $407.96 |  Orange   |        2 |
++--------------------------------+---------+-----------+----------+
+| Velvet High Back Rocking Chair | $113.99 |   Blue    |        1 |
++--------------------------------+---------+-----------+----------+
+| Velvet High Back Rocking Chair | $27.99  |   Grey    |        5 |
++--------------------------------+---------+-----------+----------+
+";
+
 #[test]
-fn prints_data_in_a_table() -> Result<(), Box<dyn std::error::Error>> { 
-    todo!("put your integration test code here!");
+fn prints_data_in_a_table() -> Result<(), Box<dyn std::error::Error>> {
+
+    let mut cmd = Command::cargo_bin("table_of_chairs").unwrap();
+
+    cmd
+        .assert()
+        .success()
+        .stdout(
+            contains(EXPECTED_TABLE)
+        );
+
     Ok(())
-}
+}