add tests for broadcasts

src/fetch/broadcast.rs

@@ -1,22 +1,44 @@
 use crate::Backend;
 use chrono::DateTime;
-use serde_json::Value;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+struct InferenceStream {
+    #[serde(rename = "loopStreamId")]
+    pub loop_stream_id: String,
+    #[serde(rename = "start")]
+    pub start_timestamp: i64,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+struct InferenceData {
+    pub title: String,
+    pub streams: Vec<InferenceStream>,
+}
 
 impl Backend {
     pub(crate) async fn get_broadcast(
         &self,
         url: String,
     ) -> Result<Option<Broadcast>, Box<dyn std::error::Error>> {
-        let data: Value = match self {
-            Backend::Prod => reqwest::get(&url).await?.json().await?,
+        let data: InferenceData = match self {
+            Backend::Prod => reqwest::get(&url).await?.json::<InferenceData>().await?,
+
             #[cfg(test)]
-            Backend::Test => todo!(),
+            Backend::Test => InferenceData {
+                title: "test-title".into(),
+                streams: vec![InferenceStream {
+                    loop_stream_id: "test.mp3".into(),
+                    start_timestamp: 1761734636000,
+                }],
+            },
         };
+
         Broadcast::from_data(url, data).await
     }
 }
 
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub(crate) struct Broadcast {
     pub(crate) url: String,
     pub(crate) media_url: String,
@@ -27,32 +49,23 @@ pub(crate) struct Broadcast {
 impl Broadcast {
     async fn from_data(
         url: String,
-        data: Value,
+        data: InferenceData,
     ) -> Result<Option<Self>, Box<dyn std::error::Error>> {
-        let Some(streams) = data["streams"].as_array() else {
-            return Err(String::from("No 'streams' found").into());
-        };
-        if streams.is_empty() {
+        if data.streams.is_empty() {
             return Ok(None);
         }
-        assert_eq!(streams.len(), 1);
+        assert_eq!(data.streams.len(), 1);
+        let stream = &data.streams[0];
 
-        let Some(id) = streams[0]["loopStreamId"].as_str() else {
-            return Err(String::from("No 'loopStreamId' found").into());
-        };
-        let media_url = format!("https://loopstream01.apa.at/?channel=oe1&shoutcast=0&id={id}");
+        let media_url = format!(
+            "https://loopstream01.apa.at/?channel=oe1&shoutcast=0&id={}",
+            stream.loop_stream_id
+        );
 
-        let Some(title) = data["title"].as_str() else {
-            return Err(format!("{url} has no title").into());
-        };
-
-        let Some(timestamp) = data["start"].as_number() else {
-            return Err(format!("{url} has no start").into());
-        };
-        let Some(timestamp) = DateTime::from_timestamp(timestamp.as_i64().unwrap() / 1000, 0)
-        else {
+        let Some(timestamp) = DateTime::from_timestamp(stream.start_timestamp / 1000, 0) else {
             return Err(format!(
-                "broadcastDay in {url} not in a valid format (unix timestamp): {timestamp}"
+                "broadcastDay in {url} not in a valid format (unix timestamp): {}",
+                stream.start_timestamp
             )
             .into());
         };
@@ -60,7 +73,7 @@ impl Broadcast {
         Ok(Some(Self {
             url,
             media_url,
-            title: title.into(),
+            title: data.title,
             timestamp,
         }))
     }
@@ -71,3 +84,29 @@ impl PartialEq for Broadcast {
         self.url == other.url
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::Backend;
+    use chrono::{TimeZone, Utc};
+
+    #[tokio::test]
+    async fn happy() {
+        let backend = Backend::Test;
+        let actual = backend
+            .get_broadcast("test-url".into())
+            .await
+            .unwrap()
+            .unwrap();
+        assert_eq!(&actual.url, "test-url");
+        assert_eq!(
+            &actual.media_url,
+            "https://loopstream01.apa.at/?channel=oe1&shoutcast=0&id=test.mp3"
+        );
+        assert_eq!(&actual.title, "test-title");
+        assert_eq!(
+            actual.timestamp,
+            Utc.with_ymd_and_hms(2025, 10, 29, 10, 43, 56).unwrap()
+        );
+    }
+}

src/fetch/overview.rs

@@ -89,7 +89,10 @@ mod tests {
     #[tokio::test]
     async fn filter_result() {
         let backend = Backend::Test;
-        let actual = backend.get_broadcasts(&["test-href".into()]).await.unwrap();
+        let actual = backend
+            .get_broadcasts(&["test-title".into()])
+            .await
+            .unwrap();
         assert_eq!(actual, vec!["test-href"]);
     }
 }