Added table query.

src/lib.rs

@@ -24,6 +24,17 @@ struct Query;
 
 #[Object]
 impl Query {
+    async fn table(&self, ctx: &Context<'_>, name: String) -> Result<Option<Table>> {
+        let tbls = ctx
+            .data::<RwLock<Vec<Table>>>()
+            .unwrap()
+            .read()
+            .await
+            .to_vec();
+        let idx = tbls.binary_search_by(|t| t.name.cmp(&name)).unwrap();
+        Ok(Some(tbls[idx].clone()))
+    }
+
     async fn tables(&self, ctx: &Context<'_>) -> Vec<Table> {
         ctx.data::<RwLock<Vec<Table>>>()
             .unwrap()
@@ -41,6 +52,7 @@ impl Mutation {
         let mut tables = ctx.data::<RwLock<Vec<Table>>>().unwrap().write().await;
         let output = Table::new(name).await;
         tables.push(output.clone());
+        tables.sort_by_key(|k| k.name.clone());
         Ok(Some(output))
     }
 }
@@ -85,6 +97,18 @@ mod support {
 mod queries {
     use super::*;
 
+    #[async_std::test]
+    async fn list_table() {
+        let db = Database::new();
+        db.execute(r#"mutation {createTable(name: "wilma"){name}}"#)
+            .await;
+        db.execute(r#"mutation {createTable(name: "betty"){name}}"#)
+            .await;
+        let output = db.execute(r#"{table(name: "wilma"){name}}"#).await;
+        let expected = r#"{"data":{"table":{"name":"wilma"}}}"#;
+        support::compare(&db, &output, &expected);
+    }
+
     #[async_std::test]
     async fn list_tables() {
         let db = Database::new();
@@ -93,7 +117,7 @@ mod queries {
         db.execute(r#"mutation {createTable(name: "barney"){name}}"#)
             .await;
         let output = db.execute(r#"{tables{name}}"#).await;
-        let expected = r#"{"data":{"tables":[{"name":"fred"},{"name":"barney"}]}}"#;
+        let expected = r#"{"data":{"tables":[{"name":"barney"},{"name":"fred"}]}}"#;
         support::compare(&db, &output, &expected);
     }
 }