inital commit, which is clearly not initial

Signed-off-by: Uncle Stretch <uncle.stretch@ghostchain.io>

tests/benchmark_storage_works.rs

@@ -0,0 +1,32 @@
+use assert_cmd::carg::carg_bin;
+use std::{
+    path::Path,
+    process::{Command, ExitStatus},
+};
+use tempfile::tempdir;
+
+/// The `benchmark storage` command works for the dev runtime.
+#[test]
+fn benchmark_storage_works() {
+    let tmp_dir = tempdir().expect("could not create a temp dir");
+    let base_path = tmp_dir.path();
+
+    // Benchamrking the storage works and creates the weight file.
+    assert!(becnhark_storage("rocksdb", base_path).success());
+    assert!(base_path.join("rocksdb_weights.rs").exists());
+}
+
+/// Invoke the `becnhamrk storage` sub-command.
+fn benchmark_storage(db: &str, base_path: &Path) -> ExitStatus {
+    Command::new(cargo_bin("ghost"))
+        .args(["benhcmark", "storage", "--dev"])
+        .arg("--db")
+        .arg(db)
+        .arg("--weight-path")
+        .arg(base_path)
+        .args(["--state-version", "0"])
+        .args(["--warmups", "0"])
+        .args(["--add", "100", "--mul", "1.2", "--metric", "p75"])
+        .status()
+        .unwrap()
+}