feat: Add Stats functions

tests/rustysearch.rs

@@ -0,0 +1,76 @@
+#[cfg(test)]
+mod tests {
+    use rustysearch::{types::Stats, search::Rustysearch};
+
+    #[test]
+    fn test_write_new_stats(){
+        let stats = Stats{
+            version: String::from("0.1.0"),
+            total_docs: 0,
+        };
+
+        assert_eq!(stats.version, "0.1.0");
+        assert_eq!(stats.total_docs, 0);
+
+        let search = Rustysearch::new("/tmp/rustysearch");
+        search.setup();
+
+        search.write_stats(stats);
+    }
+
+    #[test]
+    fn test_read_stats(){
+        let search = Rustysearch::new("/tmp/rustysearch");
+        search.setup();
+
+        clean_stats();
+
+        let stats = search.read_stats();
+        assert_eq!(stats.version, "0.1.0");
+        assert_eq!(stats.total_docs, 0);
+    }
+
+    #[test]
+    fn test_increment_total_docs(){
+        let search = Rustysearch::new("/tmp/rustysearch");
+        search.setup();
+
+        clean_stats();
+
+        let stats = search.read_stats();
+        assert_eq!(stats.total_docs, 0);
+
+        search.increment_total_docs();
+        let stats = search.read_stats();
+        assert_eq!(stats.total_docs, 1);
+    }
+
+    #[test]
+    fn test_get_total_docs(){
+        let search = Rustysearch::new("/tmp/rustysearch");
+        search.setup();
+
+        clean_stats();
+
+        let stats = search.read_stats();
+        assert_eq!(stats.total_docs, 0);
+
+        search.increment_total_docs();
+        let stats = search.read_stats();
+        assert_eq!(stats.total_docs, 1);
+
+        let total_docs = search.get_total_docs();
+        assert_eq!(total_docs, 1);
+    }
+
+    fn clean_stats(){
+        let search = Rustysearch::new("/tmp/rustysearch");
+        search.setup();
+
+        let new_stats = Stats{
+            version: String::from("0.1.0"),
+            total_docs: 0,
+        };
+        search.write_stats(new_stats);
+    }
+}