diff --git a/editors/neovim/spec/on_save_export_spec.lua b/editors/neovim/spec/on_save_export_spec.lua
new file mode 100644
index 00000000..405a76c6
--- /dev/null
+++ b/editors/neovim/spec/on_save_export_spec.lua
@@ -0,0 +1,92 @@
+---@brief [[
+--- Tests for export functionalities.
+---@brief ]]
+
+local fixtures = require 'spec.fixtures'
+local helpers = require 'spec.helpers'
+
+-- async async
+local util = require "plenary.async.util"
+local async = require('plenary.async')
+
+local async_tests = require "plenary.async.tests"
+
+require('tinymist').setup {
+  lsp = {
+    init_options = {
+        exportPdf = 'onSave',
+        outputPath = '/home/runner/test/$name',
+        development = true,
+        systemFonts = false,
+    },
+  }
+}
+
+local defer_swapped = function(timeout, callback)
+  vim.defer_fn(callback, timeout)
+end
+
+async_tests.describe('Export', function()
+  assert.is.empty(vim.lsp.get_clients { bufnr = 0, name = 'tinymist', _uninitialized = true })
+  
+  async_tests.it('pdf is created onSave', function()
+    --- keep edit the same file, and save it multiple times, and we should get a sequence of distinct pdf files.
+    --- If not, either export is not triggered, or the save events are not emitted.
+
+    local pdf_path = '/home/runner/test/main.pdf'
+    assert.is.same(nil, vim.uv.fs_stat(pdf_path), 'PDF file should not be created before testing')
+
+    local pdf_hashes = {}
+
+  
+    function export_pdf(index)
+        local pdf_exported = async.wrap(function(cb)
+        require('tinymist').subscribeDevEvent(
+            function(result)
+            if result.type == 'export' and result.needExport and result.when == 'onSave'
+            then
+                -- read the pdf file and calculate the sha256 hash
+                local pdf_content = vim.uv.fs_read_file(pdf_path)
+                local hash = vim.fn.sha256(pdf_content)
+                result.pdf_hash = hash
+                pdf_hashes[index] = hash
+                cb(result) -- resolve the promise when the export event is received
+                return true -- unregister the callback after receiving the event
+            end
+            end)
+
+            -- defer 2000ms and resolve a nil
+            defer_swapped(2000, function()
+                cb(nil) -- resolve the promise after 2 seconds
+            end)
+
+            vim.cmd.edit(fixtures.project.some_existing_file)
+            assert.is.same(1, #vim.lsp.get_clients { bufnr = 0, name = 'tinymist', _uninitialized = true })
+            --- append a text to current buffer
+            helpers.insert('This is a test export.\n')
+            -- save the file
+            vim.cmd.write()
+            vim.cmd.sleep('30m')
+
+        end, 1)()
+
+        assert.is_not.same(nil, pdf_exported, 'PDF export should be triggered on save')
+        assert.is.same('onSave', pdf_exported.when, 'Export is when = onSave')
+        assert.is_not.same(nil, vim.uv.fs_stat(pdf_path), 'PDF file should be created after saving')
+
+    end
+    
+    for i = 1, 10 do
+        export_pdf(i)
+    end
+   
+    assert.is.same(10, #pdf_hashes, 'PDF hashes should be calculated')
+    for i = 1, 10 do
+        assert.is_not.same(nil, pdf_hashes[i], 'PDF hash should be calculated')
+    end
+
+    for i = 1, 9 do
+        assert.is_not.same(pdf_hashes[i], pdf_hashes[i + 1], 'PDF hashes should be different')
+    end
+  end)
+end)