Add PENDING, COMPLETED, DELETED synthetic tags

Note that DELETED is not tested since we don't yet support deleting
tasks.

cli/src/invocation/report.rs

@@ -403,8 +403,11 @@ mod test {
         };
 
         let task = replica.get_task(uuids[0]).unwrap().unwrap();
-        assert_eq!(task_column(&task, &column, &working_set), s!("+bar +foo"));
+        assert_eq!(
+            task_column(&task, &column, &working_set),
+            s!("+PENDING +bar +foo")
+        );
         let task = replica.get_task(uuids[2]).unwrap().unwrap();
-        assert_eq!(task_column(&task, &column, &working_set), s!(""));
+        assert_eq!(task_column(&task, &column, &working_set), s!("+PENDING"));
     }
 }

docs/src/tags.md

@@ -21,3 +21,6 @@ The following synthetic tags are defined:
 
 * `WAITING` - set if the task is waiting (has a `wait` property with a date in the future)
 * `ACTIVE` - set if the task is active (has been started and not stopped)
+* `PENDING` - set if the task is pending (not completed or deleted)
+* `COMPLETED` - set if the task has been completed
+* `DELETED` - set if the task has been deleted (but not yet flushed from the task list)

taskchampion/src/task/tag.rs

@@ -126,8 +126,13 @@ impl AsRef<str> for Tag {
 )]
 #[strum(serialize_all = "SCREAMING_SNAKE_CASE")]
 pub(super) enum SyntheticTag {
+    // When adding items here, also implement and test them in `task.rs` and document them in
+    // `docs/src/tags.md`.
     Waiting,
     Active,
+    Pending,
+    Completed,
+    Deleted,
 }
 
 #[cfg(test)]

taskchampion/src/task/task.rs

@@ -96,6 +96,9 @@ impl Task {
         match synth {
             SyntheticTag::Waiting => self.is_waiting(),
             SyntheticTag::Active => self.is_active(),
+            SyntheticTag::Pending => self.get_status() == Status::Pending,
+            SyntheticTag::Completed => self.get_status() == Status::Completed,
+            SyntheticTag::Deleted => self.get_status() == Status::Deleted,
         }
     }
 
@@ -202,6 +205,11 @@ impl<'r> TaskMut<'r> {
         Ok(())
     }
 
+    /// Mark this task as complete
+    pub fn done(&mut self) -> anyhow::Result<()> {
+        self.set_status(Status::Completed)
+    }
+
     /// Add a tag to this task.  Does nothing if the tag is already present.
     pub fn add_tag(&mut self, tag: &Tag) -> anyhow::Result<()> {
         if tag.is_synthetic() {
@@ -392,6 +400,7 @@ mod test {
         assert!(task.has_tag(&utag("abc")));
         assert!(!task.has_tag(&utag("def")));
         assert!(task.has_tag(&stag(SyntheticTag::Active)));
+        assert!(task.has_tag(&stag(SyntheticTag::Pending)));
         assert!(!task.has_tag(&stag(SyntheticTag::Waiting)));
     }
 
@@ -411,10 +420,14 @@ mod test {
 
         let mut tags: Vec<_> = task.get_tags().collect();
         tags.sort();
-        assert_eq!(
-            tags,
-            vec![utag("abc"), utag("def"), stag(SyntheticTag::Waiting),]
-        );
+        let mut exp = vec![
+            utag("abc"),
+            utag("def"),
+            stag(SyntheticTag::Pending),
+            stag(SyntheticTag::Waiting),
+        ];
+        exp.sort();
+        assert_eq!(tags, exp);
     }
 
     #[test]
@@ -433,7 +446,7 @@ mod test {
 
         // only "ok" is OK
         let tags: Vec<_> = task.get_tags().collect();
-        assert_eq!(tags, vec![utag("ok")]);
+        assert_eq!(tags, vec![utag("ok"), stag(SyntheticTag::Pending)]);
     }
 
     fn count_taskmap(task: &TaskMut, f: fn(&(&String, &String)) -> bool) -> usize {
@@ -493,6 +506,20 @@ mod test {
         });
     }
 
+    #[test]
+    fn test_done() {
+        with_mut_task(|mut task| {
+            task.done().unwrap();
+            assert_eq!(task.get_status(), Status::Completed);
+            assert!(task.has_tag(&stag(SyntheticTag::Completed)));
+
+            // redundant call does nothing..
+            task.done().unwrap();
+            assert_eq!(task.get_status(), Status::Completed);
+            assert!(task.has_tag(&stag(SyntheticTag::Completed)));
+        });
+    }
+
     #[test]
     fn test_stop_multiple() {
         with_mut_task(|mut task| {