discourse/spec/lib/content_buffer_spec.rb

31 lines
970 B
Ruby

# frozen_string_literal: true
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