discourse/spec/components/content_buffer_spec.rb

30 lines
949 B
Ruby

require 'spec_helper'
require 'content_buffer'
describe ContentBuffer do
it "handles deletion across lines properly" do
c = ContentBuffer.new("a\nbc\nc")
c.apply_transform!(start: {row: 0, col: 0}, finish: {col: 1, row: 1}, operation: :delete)
expect(c.to_s).to eq("c\nc")
end
it "handles deletion inside lines properly" do
c = ContentBuffer.new("hello world")
c.apply_transform!(start: {row: 0, col: 1}, finish: {col: 4, row: 0}, operation: :delete)
expect(c.to_s).to eq("ho world")
end
it "handles inserts inside lines properly" do
c = ContentBuffer.new("hello!")
c.apply_transform!(start: {row: 0, col: 5}, operation: :insert, text: " world")
expect(c.to_s).to eq("hello world!")
end
it "handles multiline inserts" do
c = ContentBuffer.new("hello!")
c.apply_transform!(start: {row: 0, col: 5}, operation: :insert, text: "\nworld")
expect(c.to_s).to eq("hello\nworld!")
end
end