sqlite_store: Add some more basic tests

crates/store/src/addressbook.rs

@@ -2,7 +2,7 @@ use crate::synctoken::format_synctoken;
 use chrono::NaiveDateTime;
 use serde::Serialize;
 
-#[derive(Debug, Clone, Serialize)]
+#[derive(Debug, Clone, Serialize, PartialEq, Eq)]
 pub struct Addressbook {
     pub id: String,
     pub principal: String,

crates/store/src/calendar.rs

@@ -4,7 +4,7 @@ use rustical_ical::CalendarObjectType;
 use serde::{Deserialize, Serialize};
 use std::str::FromStr;
 
-#[derive(Debug, Default, Clone, Serialize, Deserialize)]
+#[derive(Debug, Default, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub struct CalendarMetadata {
     // Attributes that may be outsourced
     pub displayname: Option<String>,
@@ -13,7 +13,7 @@ pub struct CalendarMetadata {
     pub color: Option<String>,
 }
 
-#[derive(Debug, Default, Clone, Serialize, Deserialize)]
+#[derive(Debug, Default, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub struct Calendar {
     // Attributes that may be outsourced
     #[serde(flatten)]

crates/store/src/error.rs

@@ -41,6 +41,11 @@ impl Error {
             _ => StatusCode::INTERNAL_SERVER_ERROR,
         }
     }
+
+    #[must_use]
+    pub const fn is_not_found(&self) -> bool {
+        matches!(self, Self::NotFound)
+    }
 }
 
 impl IntoResponse for Error {