1 files changed, 16 insertions, 0 deletions
diff --git a/test/functional/api/highlight_spec.lua b/test/functional/api/highlight_spec.lua
index 1a054741ef..7d7d07e30e 100644
--- a/test/functional/api/highlight_spec.lua
+++ b/test/functional/api/highlight_spec.lua
@@ -637,3 +637,19 @@ describe('API: get highlight', function()
     eq({link ='Foo', default = true}, meths.get_hl(0, {name = 'Bar'}))
   end)
 end)
+
+describe('API: set/get highlight namespace', function()
+  it('set/get highlight namespace', function()
+    eq(0, meths.get_hl_ns({}))
+    local ns = meths.create_namespace('')
+    meths.set_hl_ns(ns)
+    eq(ns, meths.get_hl_ns({}))
+  end)
+
+  it('set/get window highlight namespace', function()
+    eq(-1, meths.get_hl_ns({winid = 0}))
+    local ns = meths.create_namespace('')
+    meths.win_set_hl_ns(0, ns)
+    eq(ns, meths.get_hl_ns({winid = 0}))
+  end)
+end)