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authorMichael Davis2022-11-23 15:35:07 +0000
committerBlaž Hrastnik2022-11-24 01:57:12 +0000
commit4a103db6228ba54e0f36bbebb95d25867458f473 (patch)
tree662f8d99f77f955156b3839d245a228bd71e5cd7 /helix-term/tests
parentfd00f3a70eb626242bb2fcc9bddf2c4d94580a9a (diff)
Apply inversions to Views on undo/redo
When using undo/redo, the history revision can be decremented. In that case we should apply the inversions since the given revision in History::changes_since. This prevents panics with jumplist operations when a session uses undo/redo to move the jumplist selection outside of the document.
Diffstat (limited to 'helix-term/tests')
-rw-r--r--helix-term/tests/test/commands.rs9
1 files changed, 9 insertions, 0 deletions
diff --git a/helix-term/tests/test/commands.rs b/helix-term/tests/test/commands.rs
index 27dbd9d7..01295704 100644
--- a/helix-term/tests/test/commands.rs
+++ b/helix-term/tests/test/commands.rs
@@ -286,6 +286,15 @@ async fn test_multi_selection_shell_commands() -> anyhow::Result<()> {
#[tokio::test(flavor = "multi_thread")]
async fn test_undo_redo() -> anyhow::Result<()> {
+ // A jumplist selection is created at a point which is undone.
+ //
+ // * 2[<space> Add two newlines at line start. We're now on line 3.
+ // * <C-s> Save the selection on line 3 in the jumplist.
+ // * u Undo the two newlines. We're now on line 1.
+ // * <C-o><C-i> Jump forward an back again in the jumplist. This would panic
+ // if the jumplist were not being updated correctly.
+ test(("#[|]#", "2[<space><C-s>u<C-o><C-i>", "#[|]#")).await?;
+
// A jumplist selection is passed through an edit and then an undo and then a redo.
//
// * [<space> Add a newline at line start. We're now on line 2.