add table helper utility functions

1 files changed, 38 insertions, 0 deletions

diff --git a/util_test.lua b/util_test.lua
index a0f4218..661b9f5 100755
--- a/util_test.lua
+++ b/util_test.lua
@@ -30,4 +30,42 @@ function test_visual_chars_in_line() -- luacheck: ignore 111
   lunatest.assert_equal(util.visual_chars_in_line(win, s, #s), 6)
 end
 
+function test_table_deep_copy() -- luacheck: ignore 111
+  local t = {1, 2, 3, foo = {4, 5, bar = 'bar'}}
+  local cpy = util.table.deep_copy(t)
+
+  lunatest.assert_table(cpy)
+  lunatest.assert_len(3, cpy)
+  lunatest.assert_table(cpy.foo)
+  lunatest.assert_len(2, cpy.foo)
+  for i, v in ipairs(t) do
+    lunatest.assert_equal(v, cpy[i])
+  end
+
+  t[2] = 12
+  lunatest.assert_not_equal(t[2], cpy[2])
+  t.foo[2] = 13
+  lunatest.assert_not_equal(t.foo[2], cpy.foo[2])
+end
+
+function test_table_merge() -- luacheck: ignore 111
+  local t = {1, 2, foo = {bar = {nose = 'nose'}}}
+  local t2 = {3, foo = {4, 5, bar = {bar = 'bar'}}}
+  lunatest.assert_table(t)
+  lunatest.assert_table(t2)
+
+  util.table.merge(t, t2)
+
+  lunatest.assert_table(t)
+  lunatest.assert_len(2, t)
+  lunatest.assert_table(t.foo)
+  lunatest.assert_len(2, t.foo)
+
+  lunatest.assert_equal(t[1], t2[1])
+  lunatest.assert_equal(t[2], 2)
+
+  lunatest.assert_equal(t.foo.bar.bar, 'bar')
+  lunatest.assert_equal(t.foo.bar.nose, 'nose')
+end
+
 lunatest.run()