progress

gpx-rs/src/engine/command/file/delete_all.rs

@@ -0,0 +1,48 @@
+use crate::{Apply, CommandError, Selection, State};
+
+#[derive(Debug)]
+pub struct DeleteAll;
+
+impl Apply for DeleteAll {
+    fn apply(self, state: &mut State) -> Result<(), CommandError> {
+        if state.files.is_empty() {
+            return Err(CommandError::NothingToDo);
+        }
+        state.files.clear();
+        state.order.0.clear();
+        *state.selection = Selection::Empty;
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::engine::command::fixture::Fixture;
+
+    use super::*;
+
+    #[test]
+    fn test_delete_all() {
+        let mut fx = Fixture::default();
+        assert_eq!(
+            DeleteAll.apply(&mut fx.state()),
+            Err(CommandError::NothingToDo)
+        );
+        crate::New {
+            name: "a",
+            trackpoint: None,
+        }
+        .apply(&mut fx.state())
+        .unwrap();
+        crate::New {
+            name: "b",
+            trackpoint: None,
+        }
+        .apply(&mut fx.state())
+        .unwrap();
+        assert!(DeleteAll.apply(&mut fx.state()).is_ok());
+        assert!(fx.files.is_empty());
+        assert!(fx.order.0.is_empty());
+        assert!(matches!(fx.selection, Selection::Empty));
+    }
+}