添加了一系列库，更新命名方式

Cargo.toml

@@ -9,3 +9,7 @@ edition = "2021"
 rust_decimal = "1.31.0"
 rust_decimal_macros = "1.31.0"
 reqwest = "0.11"
+chrono = "0.4.26"
+serde = "1.0.183"
+serde_derive = "1.0.183"
+serde_json = "1.0.104"

src/test/http-test.rs

@@ -1,3 +0,0 @@
-fn main() {
-
-}

src/test/http_test.rs

@@ -0,0 +1,13 @@
+fn ok_test() {
+    println!("Hello World.")
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        ok_test()
+    }
+}