diff --git a/.gitignore b/.gitignore
index 78fd378..e162f10 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 **/*.sw*
+/target/
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..122f57d
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,119 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "equivalent"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
+[[package]]
+name = "hashbrown"
+version = "0.14.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
+
+[[package]]
+name = "indexmap"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
+dependencies = [
+ "equivalent",
+ "hashbrown",
+]
+
+[[package]]
+name = "itoa"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.70"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
+
+[[package]]
+name = "serde"
+version = "1.0.193"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25dd9975e68d0cb5aa1120c288333fc98731bd1dd12f561e468ea4728c042b89"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.193"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_yaml"
+version = "0.9.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3cc7a1570e38322cfe4154732e5110f887ea57e22b76f4bfd32b5bdd3368666c"
+dependencies = [
+ "indexmap",
+ "itoa",
+ "ryu",
+ "serde",
+ "unsafe-libyaml",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "tsheet-cli"
+version = "0.1.0"
+dependencies = [
+ "serde",
+ "serde_yaml",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+
+[[package]]
+name = "unsafe-libyaml"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f28467d3e1d3c6586d8f25fa243f544f5800fec42d97032474e17222c2b75cfa"
diff --git a/Cargo.toml b/Cargo.toml
index 52f69fb..af81833 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,3 +6,5 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+serde = { version = "1.0.193", features = ["derive"] }
+serde_yaml = "0.9.27"
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..eae0046 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,36 @@
+use serde::{Serialize, Deserialize};
+
 fn main() {
     println!("Hello, world!");
 }
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+struct Storage {
+   adds: []Add,
+}
+
+struct Add {
+   t: i64,
+   add: String,
+   tag: String,
+}
+
+fn load_storage(path: String) -> Result<Storage, String> {
+   Err("failed".to_string())
+}
+
+#[cfg(test)]
+mod tests {
+   use super::*;
+
+   #[test]
+   fn test_testdata_standalone_yaml() {
+      assert_eq!(
+         load_storage("./testdata/standalone.yaml".to_string()).expect("cant load standalone.yaml"),
+         Storage{adds: {
+            Add{t: 1, add: "def".to_string(), tag: "abc".to_string()},
+            Add{t: 2, add: "ghi".to_string(), tag: "".to_string()},
+         }},
+      );
+   }
+}