Update tests1.rs

Author: 13001288072

exercises/tests/tests1.rs

@@ -1,21 +1,11 @@
-// tests1.rs
-//
-// Tests are important to ensure that your code does what you think it should
-// do. Tests can be run on this file with the following command: rustlings run
-// tests1
-//
-// This test has a problem with it -- make the test compile! Make the test pass!
-// Make the test fail!
-//
-// Execute `rustlings hint tests1` or use the `hint` watch subcommand for a
-// hint.
-
-// I AM NOT DONE
-
 #[cfg(test)]
 mod tests {
     #[test]
     fn you_can_assert() {
-        assert!();
+        // 1. 先让测试编译并通过：assert! 接收一个布尔值，传入true即可
+        // assert!(true); 
+
+        // 2. 让测试失败：传入false（取消注释下面这行，注释上面的true）
+        assert!(false);
     }
 }