implement serde (se, de) thingy for sha256, textureformat, texture

server/texture-sync-server/src/model/texture_format.rs

@@ -0,0 +1,50 @@
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
+#[derive(Clone, Debug, Deserialize, Serialize, Eq, PartialEq)]
+pub enum TextureFormat {
+    #[serde(rename = "png")]
+    PNG,
+    #[serde(rename = "jpeg")]
+    JPEG,
+}
+
+#[cfg(test)]
+mod tests {
+    // Lol, I thought we would need custom code, like for Sha256, but it works out of the box :D
+    // Anyhow, left the Test in.
+
+    use super::*;
+    use serde_json;
+
+    #[test]
+    fn serialize() {
+        let format = serde_json::to_string_pretty(&TextureFormat::PNG).unwrap();
+        assert_eq!(&format, r#""png""#);
+
+        let format = serde_json::to_string_pretty(&TextureFormat::JPEG).unwrap();
+        assert_eq!(&format, r#""jpeg""#);
+    }
+
+    #[test]
+    fn deserialize() {
+        let format: TextureFormat = serde_json::from_str(r#""png""#).unwrap();
+        assert_eq!(format, TextureFormat::PNG);
+
+        let format: TextureFormat = serde_json::from_str(r#""jpeg""#).unwrap();
+        assert_eq!(format, TextureFormat::JPEG);
+    }
+
+    #[test]
+    fn fail_deserialize() {
+        assert_eq!(
+            serde_json::from_str::<'_, TextureFormat>(r#""notafmt""#).is_err(),
+            true
+        );
+
+        // Format must be lowercase!
+        assert_eq!(
+            serde_json::from_str::<'_, TextureFormat>(r#""PNG""#).is_err(),
+            true
+        );
+    }
+}