1 files changed, 150 insertions, 0 deletions
diff --git a/test/functional/legacy/tagcase_spec.lua b/test/functional/legacy/tagcase_spec.lua
new file mode 100644
index 0000000000..9a8c6fbe42
--- /dev/null
+++ b/test/functional/legacy/tagcase_spec.lua
@@ -0,0 +1,150 @@
+local helpers = require('test.functional.helpers')
+local clear = helpers.clear
+local eq = helpers.eq
+local eval = helpers.eval
+local exc_exec = helpers.exc_exec
+local expect = helpers.expect
+local insert = helpers.insert
+local source = helpers.source
+local write_file = helpers.write_file
+
+describe("'tagcase' option", function()
+  setup(function()
+    write_file('Xtags', [[
+      Bar	Xtext	3
+      Foo	Xtext	2
+      foo	Xtext	4]])
+  end)
+
+  before_each(function()
+    clear()
+    source([[
+      lang mess C
+      set tags=Xtags]])
+  end)
+
+  teardown(function()
+    os.remove('Xtags')
+  end)
+
+  it('should have correct default values', function()
+    source([[
+      set ic&
+      setg tc&
+      setl tc&
+      ]])
+
+    eq(0, eval('&ic'))
+    eq('followic', eval('&g:tc'))
+    eq('followic', eval('&l:tc'))
+    eq('followic', eval('&tc'))
+  end)
+
+  it('should accept <empty> only for setlocal', function()
+    -- Verify that the local setting accepts <empty> but that the global setting
+    -- does not.  The first of these (setting the local value to <empty>) should
+    -- succeed; the other two should fail.
+    eq(0, exc_exec('setl tc='))
+    eq('Vim(setglobal):E474: Invalid argument: tc=', exc_exec('setg tc='))
+    eq('Vim(set):E474: Invalid argument: tc=', exc_exec('set tc='))
+  end)
+
+  it("should work with 'ignorecase' correctly in all combinations", function()
+    -- Verify that the correct number of matching tags is found for all values of
+    -- 'ignorecase' and global and local values 'tagcase', in all combinations.
+    insert([[
+      
+      Foo
+      Bar
+      foo
+      
+      end text]])
+
+    source([[
+      for &ic in [0, 1]
+        for &g:tc in ["followic", "ignore", "match"]
+          for &l:tc in ["", "followic", "ignore", "match"]
+            call append('$', "ic=".&ic." g:tc=".&g:tc." l:tc=".&l:tc." tc=".&tc)
+            call append('$', len(taglist("^foo$")))
+            call append('$', len(taglist("^Foo$")))
+          endfor
+        endfor
+      endfor
+      
+      1,/^end text$/d]])
+
+    expect([[
+      ic=0 g:tc=followic l:tc= tc=followic
+      1
+      1
+      ic=0 g:tc=followic l:tc=followic tc=followic
+      1
+      1
+      ic=0 g:tc=followic l:tc=ignore tc=ignore
+      2
+      2
+      ic=0 g:tc=followic l:tc=match tc=match
+      1
+      1
+      ic=0 g:tc=ignore l:tc= tc=ignore
+      2
+      2
+      ic=0 g:tc=ignore l:tc=followic tc=followic
+      1
+      1
+      ic=0 g:tc=ignore l:tc=ignore tc=ignore
+      2
+      2
+      ic=0 g:tc=ignore l:tc=match tc=match
+      1
+      1
+      ic=0 g:tc=match l:tc= tc=match
+      1
+      1
+      ic=0 g:tc=match l:tc=followic tc=followic
+      1
+      1
+      ic=0 g:tc=match l:tc=ignore tc=ignore
+      2
+      2
+      ic=0 g:tc=match l:tc=match tc=match
+      1
+      1
+      ic=1 g:tc=followic l:tc= tc=followic
+      2
+      2
+      ic=1 g:tc=followic l:tc=followic tc=followic
+      2
+      2
+      ic=1 g:tc=followic l:tc=ignore tc=ignore
+      2
+      2
+      ic=1 g:tc=followic l:tc=match tc=match
+      1
+      1
+      ic=1 g:tc=ignore l:tc= tc=ignore
+      2
+      2
+      ic=1 g:tc=ignore l:tc=followic tc=followic
+      2
+      2
+      ic=1 g:tc=ignore l:tc=ignore tc=ignore
+      2
+      2
+      ic=1 g:tc=ignore l:tc=match tc=match
+      1
+      1
+      ic=1 g:tc=match l:tc= tc=match
+      1
+      1
+      ic=1 g:tc=match l:tc=followic tc=followic
+      2
+      2
+      ic=1 g:tc=match l:tc=ignore tc=ignore
+      2
+      2
+      ic=1 g:tc=match l:tc=match tc=match
+      1
+      1]])
+  end)
+end)