1 files changed, 45 insertions, 0 deletions
diff --git a/test/reline/test_unicode.rb b/test/reline/test_unicode.rb
index 08f8197cef..834f7114c4 100644
--- a/test/reline/test_unicode.rb
+++ b/test/reline/test_unicode.rb
@@ -17,4 +17,49 @@ class Reline::Unicode::Test < Reline::TestCase
   def test_ambiguous_width
     assert_equal 2, Reline::Unicode.calculate_width('√', true)
   end
+
+  def test_csi_regexp
+    csi_sequences = ["\e[m", "\e[1m", "\e[12;34m", "\e[12;34H"]
+    assert_equal(csi_sequences, "text#{csi_sequences.join('text')}text".scan(Reline::Unicode::CSI_REGEXP))
+  end
+
+  def test_osc_regexp
+    osc_sequences = ["\e]1\a", "\e]0;OSC\a", "\e]1\e\\", "\e]0;OSC\e\\"]
+    separator = "text\atext"
+    assert_equal(osc_sequences, "#{separator}#{osc_sequences.join(separator)}#{separator}".scan(Reline::Unicode::OSC_REGEXP))
+  end
+
+  def test_split_by_width
+    assert_equal [['abc', nil, 'de'], 2], Reline::Unicode.split_by_width('abcde', 3)
+    assert_equal [['abc', nil, 'def', nil, ''], 3], Reline::Unicode.split_by_width('abcdef', 3)
+    assert_equal [['ab', nil, 'あd', nil, 'ef'], 3], Reline::Unicode.split_by_width('abあdef', 3)
+    assert_equal [["ab\1zero\2c", nil, 'def', nil, ''], 3], Reline::Unicode.split_by_width("ab\1zero\2cdef", 3)
+    assert_equal [["\e[31mabc", nil, "\e[31md\e[42mef", nil, "\e[31m\e[42mg"], 3], Reline::Unicode.split_by_width("\e[31mabcd\e[42mefg", 3)
+    assert_equal [["ab\e]0;1\ac", nil, "\e]0;1\ad"], 2], Reline::Unicode.split_by_width("ab\e]0;1\acd", 3)
+  end
+
+  def test_take_range
+    assert_equal 'cdef', Reline::Unicode.take_range('abcdefghi', 2, 4)
+    assert_equal 'あde', Reline::Unicode.take_range('abあdef', 2, 4)
+    assert_equal 'zerocdef', Reline::Unicode.take_range("ab\1zero\2cdef", 2, 4)
+    assert_equal 'bzerocde', Reline::Unicode.take_range("ab\1zero\2cdef", 1, 4)
+    assert_equal "\e[31mcd\e[42mef", Reline::Unicode.take_range("\e[31mabcd\e[42mefg", 2, 4)
+    assert_equal "\e]0;1\acd", Reline::Unicode.take_range("ab\e]0;1\acd", 2, 3)
+    assert_equal 'いう', Reline::Unicode.take_range('あいうえお', 2, 4)
+  end
+
+  def test_calculate_width
+    assert_equal 9, Reline::Unicode.calculate_width('abcdefghi')
+    assert_equal 9, Reline::Unicode.calculate_width('abcdefghi', true)
+    assert_equal 7, Reline::Unicode.calculate_width('abあdef')
+    assert_equal 7, Reline::Unicode.calculate_width('abあdef', true)
+    assert_equal 14, Reline::Unicode.calculate_width("ab\1zero\2cdef")
+    assert_equal 6, Reline::Unicode.calculate_width("ab\1zero\2cdef", true)
+    assert_equal 19, Reline::Unicode.calculate_width("\e[31mabcd\e[42mefg")
+    assert_equal 7, Reline::Unicode.calculate_width("\e[31mabcd\e[42mefg", true)
+    assert_equal 12, Reline::Unicode.calculate_width("ab\e]0;1\acd")
+    assert_equal 4, Reline::Unicode.calculate_width("ab\e]0;1\acd", true)
+    assert_equal 10, Reline::Unicode.calculate_width('あいうえお')
+    assert_equal 10, Reline::Unicode.calculate_width('あいうえお', true)
+  end
 end