local stringbuffer = require('CopilotChat.utils.stringbuffer')

describe('CopilotChat.utils.stringbuffer', function()
  it('concatenates strings with put', function()
    local buf = stringbuffer()
    buf:put('hello')
    buf:put(' ')
    buf:put('world')
    assert.equals('hello world', buf:tostring())
  end)

  it('sets buffer with set', function()
    local buf = stringbuffer()
    buf:put('foo')
    buf:set('bar')
    assert.equals('bar', buf:tostring())
  end)

  it('handles empty buffer', function()
    local buf = stringbuffer()
    assert.equals('', buf:tostring())
  end)
end)