test(nvim): cover nested worktree resolution

.config/nvim/tests/worktree_spec.lua

@@ -245,6 +245,19 @@ describe('func.worktree', function()
     assert.same({ 2, 1 }, worktree.clamp_cursor(buf, { 2, 1 }))
   end)
 
+  it('carries a buffer from the innermost worktree containing it', function()
+    local nested = main .. '/nested'
+    sh({ 'git', '-C', main, 'worktree', 'add', '-q', '-b', 'nested', nested })
+    open(nested .. '/one.txt')
+
+    local summary = worktree.switch(other)
+
+    assert.is_not_nil(summary)
+    assert.same({ 'one.txt' }, summary.moved)
+    assert.same({}, summary.missing)
+    assert.equals(realpath(other) .. '/one.txt', vim.api.nvim_buf_get_name(vim.fn.bufnr(realpath(other) .. '/one.txt')))
+  end)
+
   it('lands on a valid line when the destination file is empty', function()
     vim.fn.writefile({}, other .. '/one.txt')
     open(main .. '/one.txt')