test(report): cargo report timings command

Author: weihanglo

tests/testsuite/cargo_report_timings/help/mod.rs

@@ -0,0 +1,14 @@
+use crate::prelude::*;
+use cargo_test_support::file;
+use cargo_test_support::str;
+
+#[cargo_test]
+fn case() {
+    snapbox::cmd::Command::cargo_ui()
+        .args(["report", "timings"])
+        .arg("--help")
+        .assert()
+        .failure()
+        .stdout_eq(str![""])
+        .stderr_eq(file!["stderr.term.svg"]);
+}