tests: Migrate legacy charsearch test.

test/functional/legacy/charsearch_spec.lua

@@ -0,0 +1,42 @@
+-- Test for character searches
+
+local helpers = require('test.functional.helpers')
+local feed, insert = helpers.feed, helpers.insert
+local clear, execute, expect = helpers.clear, helpers.execute, helpers.expect
+
+describe('charsearch', function()
+  setup(clear)
+
+  it('is working', function()
+    insert([[
+      Xabcdefghijkemnopqretuvwxyz
+      Yabcdefghijkemnopqretuvwxyz
+      Zabcdefghijkemnokqretkvwxyz]])
+
+    -- Check that "fe" and ";" work.
+    execute('/^X')
+    feed('ylfep;;p,,p')
+    -- Check that save/restore works.
+    execute('/^Y')
+    feed('ylfep')
+    execute('let csave = getcharsearch()')
+    feed('fip')
+    execute('call setcharsearch(csave)')
+    feed(';p;p')
+    -- Check that setcharsearch() changes the settins.
+    execute('/^Z')
+    feed('ylfep')
+    execute("call setcharsearch({'char': 'k'})")
+    feed(';p')
+    execute("call setcharsearch({'forward': 0})")
+    feed('$;p')
+    execute("call setcharseearch({'until'}: 1})")
+    feed(';;p')
+
+    -- Assert buffer contents.
+    expect([[
+      XabcdeXfghijkeXmnopqreXtuvwxyz
+      YabcdeYfghiYjkeYmnopqreYtuvwxyz
+      ZabcdeZfghijkZemnokZqretkZvwxyz]])
+  end)
+end)