terminal/new: semantic prompt saving tests

src/terminal/Screen.zig

@@ -6595,6 +6595,7 @@ test "Screen: resize (no reflow) less cols with scrollback scrolled up" {
     try testing.expectEqual(@as(usize, 2), s.cursor.y);
 }
 
+// X
 test "Screen: resize more cols no reflow preserves semantic prompt" {
     const testing = std.testing;
     const alloc = testing.allocator;

src/terminal/new/PageList.zig

@@ -3122,6 +3122,32 @@ test "PageList resize reflow more cols cursor in wrapped row that isn't unwrappe
     try testing.expectEqual(@as(size.CellCountInt, 1), cursor.y);
 }
 
+test "PageList resize reflow more cols no reflow preserves semantic prompt" {
+    const testing = std.testing;
+    const alloc = testing.allocator;
+
+    var s = try init(alloc, 2, 4, 0);
+    defer s.deinit();
+    {
+        try testing.expect(s.pages.first == s.pages.last);
+        const page = &s.pages.first.?.data;
+        const rac = page.getRowAndCell(0, 1);
+        rac.row.semantic_prompt = .prompt;
+    }
+
+    // Resize
+    try s.resize(.{ .cols = 4, .reflow = true });
+    try testing.expectEqual(@as(usize, 4), s.cols);
+    try testing.expectEqual(@as(usize, 4), s.totalRows());
+
+    {
+        try testing.expect(s.pages.first == s.pages.last);
+        const page = &s.pages.first.?.data;
+        const rac = page.getRowAndCell(0, 1);
+        try testing.expect(rac.row.semantic_prompt == .prompt);
+    }
+}
+
 test "PageList resize reflow less cols no wrapped rows" {
     const testing = std.testing;
     const alloc = testing.allocator;

src/terminal/new/Screen.zig

@@ -2303,6 +2303,49 @@ test "Screen: resize (no reflow) less cols with scrollback scrolled up" {
     // }
 }
 
+test "Screen: resize more cols no reflow preserves semantic prompt" {
+    const testing = std.testing;
+    const alloc = testing.allocator;
+
+    var s = try init(alloc, 5, 3, 0);
+    defer s.deinit();
+    const str = "1ABCD\n2EFGH\n3IJKL";
+    try s.testWriteString(str);
+
+    // Set one of the rows to be a prompt
+    {
+        s.cursorAbsolute(0, 1);
+        s.cursor.page_row.semantic_prompt = .prompt;
+    }
+
+    try s.resize(10, 3);
+
+    {
+        const contents = try s.dumpStringAlloc(alloc, .{ .viewport = .{} });
+        defer alloc.free(contents);
+        try testing.expectEqualStrings(str, contents);
+    }
+    {
+        const contents = try s.dumpStringAlloc(alloc, .{ .screen = .{} });
+        defer alloc.free(contents);
+        try testing.expectEqualStrings(str, contents);
+    }
+
+    // Our one row should still be a semantic prompt, the others should not.
+    {
+        const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 0 } }).?;
+        try testing.expect(list_cell.row.semantic_prompt == .unknown);
+    }
+    {
+        const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 1 } }).?;
+        try testing.expect(list_cell.row.semantic_prompt == .prompt);
+    }
+    {
+        const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 2 } }).?;
+        try testing.expect(list_cell.row.semantic_prompt == .unknown);
+    }
+}
+
 test "Screen: resize more cols with reflow that fits full width" {
     const testing = std.testing;
     const alloc = testing.allocator;