diff --git a/test/tclient/init.lua b/test/tclient/init.lua
index f945d570e..4e05302b2 100644
--- a/test/tclient/init.lua
+++ b/test/tclient/init.lua
@@ -13,6 +13,7 @@ require 'tclient.tests.hover-set-local'
 require 'tclient.tests.same-prefix'
 require 'tclient.tests.recursive-runner'
 require 'tclient.tests.modify-luarc'
+require 'tclient.tests.relative-library'
 
 require 'tclient.tests.performance-jass-common'
 require 'tclient.tests.build-meta'
diff --git a/test/tclient/tests/relative-library.lua b/test/tclient/tests/relative-library.lua
new file mode 100644
index 000000000..5628c0b41
--- /dev/null
+++ b/test/tclient/tests/relative-library.lua
@@ -0,0 +1,42 @@
+local lclient = require 'lclient'
+local fs      = require 'bee.filesystem'
+local util    = require 'utility'
+local furi    = require 'file-uri'
+local ws      = require 'workspace'
+local files   = require 'files'
+
+local rootPath = LOGPATH .. '/relative-library'
+local rootUri  = furi.encode(rootPath)
+
+for _, name in ipairs { 'src', 'lib' } do
+    fs.create_directories(fs.path(rootPath .. '/' .. name))
+    util.saveFile(rootPath .. '/' .. name .. '/test.lua', '')
+end
+
+---@async
+lclient():start(function (client)
+    client:registerFakers()
+
+    client:register('workspace/configuration', function ()
+        return {
+            {
+                ['workspace.library'] = {
+                    './lib',
+                }
+            }
+        }
+    end)
+
+    client:initialize {
+        rootPath = rootPath,
+        rootUri = rootUri
+    }
+
+    ws.awaitReady(rootUri .. '/src')
+
+    assert(files.getState(rootUri .. '/src/test.lua')   ~= nil)
+    assert(files.getState(rootUri .. '/lib/test.lua')   ~= nil)
+
+    assert(files.isLibrary(rootUri .. '/src/test.lua') == false)
+    assert(files.isLibrary(rootUri .. '/lib/test.lua') == true)
+end)