add Option default example

baoyachi · Jun 17, 2022 · 693ded7 · 693ded7
1 parent 0c51e72
commit 693ded7
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Showing 3 changed files with 23 additions and 1 deletion.
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde_trim"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["baoyachi <[email protected]>"]
 edition = "2021"
 description = "serde deserialize_with String trim"

diff --git a/README.md b/README.md
@@ -29,5 +29,16 @@ fn main() {
     let json = r#"{"name":" "}"#;
     let foo = serde_json::from_str::<OptionFoo>(json).unwrap();
     assert_eq!(foo.name, None);
+
+    #[derive(Deserialize)]
+    struct OptionBar {
+        #[serde(default, deserialize_with = "option_string_trim")]
+        name: Option<String>,
+        addr: String,
+    }
+    let json = r#"{"addr":"ABC"}"#;
+    let foo = serde_json::from_str::<OptionBar>(json).unwrap();
+    assert_eq!(foo.name, None);
+    assert_eq!(foo.addr, "ABC");
 }
 ```
diff --git a/lib.rs b/lib.rs
@@ -45,4 +45,15 @@ fn test_option_string_trim() {
     let json = r#"{"name":" "}"#;
     let foo = serde_json::from_str::<OptionFoo>(json).unwrap();
     assert_eq!(foo.name, None);
+
+    #[derive(Deserialize)]
+    struct OptionBar {
+        #[serde(default, deserialize_with = "option_string_trim")]
+        name: Option<String>,
+        addr: String,
+    }
+    let json = r#"{"addr":"ABC"}"#;
+    let foo = serde_json::from_str::<OptionBar>(json).unwrap();
+    assert_eq!(foo.name, None);
+    assert_eq!(foo.addr, "ABC");
 }