Add test/reline/test_string_processing.rb

test/reline/test_string_processing.rb

@@ -0,0 +1,23 @@
+require_relative 'helper'
+
+class Reline::LineEditor::StringProcessingTest < Reline::TestCase
+  def setup
+    Reline.send(:test_mode)
+    @prompt = '> '
+    @config = Reline::Config.new
+    Reline::HISTORY.instance_variable_set(:@config, @config)
+    @encoding = (RELINE_TEST_ENCODING rescue Encoding.default_external)
+    @line_editor = Reline::LineEditor.new(@config)
+    @line_editor.reset(@prompt, @encoding)
+  end
+
+  def test_calculate_width
+    width = @line_editor.send(:calculate_width, 'Ruby string')
+    assert_equal('Ruby string'.size, width)
+  end
+
+  def test_calculate_width_with_escape_sequence
+    width = @line_editor.send(:calculate_width, "\1\e[31m\2RubyColor\1\e[34m\2 default string \1\e[m\2>", true)
+    assert_equal('RubyColor default string >'.size, width)
+  end
+end