chore: add test (#260)

Author: psteinroe

Diff for: crates/pgt_workspace/src/workspace/server/change.rs

@@ -1116,6 +1116,79 @@ mod tests {
         assert_document_integrity(&doc);
     }
 
+    #[test]
+    fn comment_at_begin() {
+        let path = PgTPath::new("test.sql");
+
+        let mut doc = Document::new(
+            path.clone(),
+            "-- Add new schema named \"private\"\nCREATE SCHEMA \"private\";".to_string(),
+            0,
+        );
+
+        let change = ChangeFileParams {
+            path: path.clone(),
+            version: 1,
+            changes: vec![ChangeParams {
+                text: "".to_string(),
+                range: Some(TextRange::new(0.into(), 1.into())),
+            }],
+        };
+
+        let changed = doc.apply_file_change(&change);
+
+        assert_eq!(
+            doc.content,
+            "- Add new schema named \"private\"\nCREATE SCHEMA \"private\";"
+        );
+
+        assert_eq!(changed.len(), 3);
+        assert!(matches!(
+            changed[0],
+            StatementChange::Deleted(Statement { id: 0, .. })
+        ));
+        assert!(matches!(
+            changed[1],
+            StatementChange::Added(AddedStatement { .. })
+        ));
+        assert!(matches!(
+            changed[2],
+            StatementChange::Added(AddedStatement { .. })
+        ));
+
+        let change_2 = ChangeFileParams {
+            path: path.clone(),
+            version: 2,
+            changes: vec![ChangeParams {
+                text: "-".to_string(),
+                range: Some(TextRange::new(0.into(), 0.into())),
+            }],
+        };
+
+        let changed_2 = doc.apply_file_change(&change_2);
+
+        assert_eq!(
+            doc.content,
+            "-- Add new schema named \"private\"\nCREATE SCHEMA \"private\";"
+        );
+
+        assert_eq!(changed_2.len(), 3);
+        assert!(matches!(
+            changed_2[0],
+            StatementChange::Deleted(Statement { .. })
+        ));
+        assert!(matches!(
+            changed_2[1],
+            StatementChange::Deleted(Statement { .. })
+        ));
+        assert!(matches!(
+            changed_2[2],
+            StatementChange::Added(AddedStatement { .. })
+        ));
+
+        assert_document_integrity(&doc);
+    }
+
     #[test]
     fn apply_changes_within_statement() {
         let input = "select id  from users;\nselect * from contacts;";

Diff for: justfile

@@ -2,9 +2,9 @@ _default:
   just --list -u
 
 alias f := format
-alias t := test
 alias r := ready
 alias l := lint
+alias t := test
 
 # Installs the tools needed to develop
 install-tools:
@@ -109,4 +109,4 @@ merge-main:
 
 # Make sure to set your PGT_LOG_PATH in your shell profile.
 show-logs:
-    tail -f $(ls $PGT_LOG_PATH/server.log.* | sort -t- -k2,2 -k3,3 -k4,4 | tail -n 1)
+    tail -f $(ls $PGT_LOG_PATH/server.log.* | sort -t- -k2,2 -k3,3 -k4,4 | tail -n 1)