make the example work

src/about_variables.rs

@@ -1,5 +1,5 @@
 #[allow(dead_code)]
-pub fn guess_this () -> i32 {
+fn guess_this () -> i32 {
     let one = 5;
     let two = 7;
     let three = 3;
@@ -11,7 +11,7 @@ mod tests {
     use super::*;
 
     pub fn test_complicated () {
-        assert_eq!(1, guess_this());
+        verify!(1, guess_this(), "Complicated example");
     }
 }
 

src/macros.rs

@@ -0,0 +1,31 @@
+#[macro_export]
+macro_rules! verify {
+    ($left:expr, $right:expr, $str:expr) => {
+        use ansi_term::Color::{Green, Red};
+
+        if $left == $right {
+            println!("{} {}", Green.bold().paint("PASS"), $str);
+        } else {
+            println!("{} {}", Red.bold().paint("FAIL"), $str);
+            println!("\tYou submitted {}, but that's not correct!", $left);
+            println!("\tPlease correct your code to make this test pass!");
+        }
+    };
+}
+
+#[macro_export]
+macro_rules! verify_easy {
+    ($str:expr, $left:expr, $right:expr) => {
+        use ansi_term::Color::{Green, Red};
+
+        if $left == $right {
+            println!("{} {}", Green.bold().paint("PASS"), $str);
+        } else {
+            println!("{} {}", Red.bold().paint("FAIL"), $str);
+            println!("\tExpected: {}", $right);
+            println!("\tGot: {}", $left);
+            println!("\tPlease correct your code to make this test pass!");
+        }
+    };
+}
+

src/main.rs

@@ -2,34 +2,10 @@
 extern crate quicli;
 extern crate ansi_term;
 
-use ansi_term::Colour::{Green, Red, Yellow};
 use quicli::prelude::*;
+use ansi_term::Color::Yellow;
 
-macro_rules! verify {
-    ($left:expr, $right:expr, $str:expr) => {
-        if ($left == $right) {
-            println!("{} {}", Green.bold().paint("PASS"), $str);
-        } else {
-            println!("{} {}", Red.bold().paint("FAIL"), $str);
-            println!("\tYou submitted {}, but that's not correct!", $left);
-            println!("\tPlease correct your code to make this test pass!");
-        }
-    };
-}
-
-macro_rules! verify_easy {
-    ($str:expr, $left:expr, $right:expr) => {
-        if ($left == $right) {
-            println!("{} {}", Green.bold().paint("PASS"), $str);
-        } else {
-            println!("{} {}", Red.bold().paint("FAIL"), $str);
-            println!("\tExpected: {}", $right);
-            println!("\tGot: {}", $left);
-            println!("\tPlease correct your code to make this test pass!");
-        }
-    };
-}
-
+#[macro_use] mod macros;
 mod about_variables;
 
 #[derive(Debug, StructOpt)]
@@ -41,5 +17,5 @@ main!(|args: Cli| if let Some(e) = args.exercise {
     println!("selected {}", e);
 } else {
     println!("Welcome to {}", Yellow.paint("rustlings"));
-    verify!(2, 1, "One equals one");
+    about_variables::exec();
 });