add example for rstest (#89)

Cargo.toml

@@ -46,3 +46,4 @@ executable = ["which"]
 tokio = { version = "1.15.0", features = ["rt", "macros"] }
 serial_test = "2.0.0"
 libtest-with = { version = "0.7.0-0", features = ["net", "resource", "user", "executable"] }
+rstest = "0.21.0"

README.md

@@ -34,7 +34,7 @@ Rust version `1.61` of stable channel or `2022-03-30` of nightly channel will sh
 If the ignore message does not show in the previous Rust version you used, the feature `ign-msg` can be used to work around.
 and the name of ignored test case will be rewritten, such that you can easier to know why the test is ignored.
 
-The order of test macros(`#[test]`, `#[tokio::test]`, `#[serial_test::serial]`, ...) is important, please check out examples.
+The order of test macros(`#[test]`, `#[tokio::test]`, `#[serial_test::serial]`, `#[rstest]`...) is important, please check out examples.
 
 ## Environment Variable
 Run test case when the environment variable is set.

examples/rstest.rs

@@ -0,0 +1,22 @@
+use rstest::rstest;
+
+fn main() {}
+
+#[test_with::env(NOTHING)]
+#[rstest]
+#[case(0, 0)]
+#[case(1, 1)]
+#[case(2, 1)]
+#[case(3, 2)]
+#[case(4, 3)]
+fn fibonacci_test(#[case] input: u32, #[case] expected: u32) {
+    assert_eq!(expected, fibonacci(input))
+}
+
+fn fibonacci(input: u32) -> u32 {
+    match input {
+        0 => 0,
+        1 => 1,
+        n => fibonacci(n - 2) + fibonacci(n - 1),
+    }
+}