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# frozen_string_literal: true
require_relative '../test_helper'
# Fake File test class
class FakeFileTest < Minitest::Test
include FakeFS
def setup
FileSystem.clear
@file = FakeFile.new
end
def test_fake_file_has_empty_content_by_default
assert_equal '', @file.content
end
def test_fake_file_can_read_and_write_to_content
@file.content = 'foobar'
assert_equal 'foobar', @file.content
end
def test_fake_file_has_1_link_by_default
assert_equal [@file], @file.links
end
def test_fake_file_can_create_link
other_file = FakeFile.new
@file.link(other_file)
assert_equal [@file, other_file], @file.links
end
def test_fake_file_wont_add_link_to_same_file_twice
other_file = FakeFile.new
@file.link other_file
@file.link other_file
assert_equal [@file, other_file], @file.links
end
def test_links_are_mutual
other_file = FakeFile.new
@file.link(other_file)
assert_equal [@file, other_file], other_file.links
end
def test_can_link_multiple_files
file_two = FakeFile.new
file_three = FakeFile.new
@file.link file_two
@file.link file_three
assert_equal [@file, file_two, file_three], @file.links
assert_equal [@file, file_two, file_three], file_two.links
assert_equal [@file, file_two, file_three], file_three.links
end
def test_links_share_same_content
other_file = FakeFile.new
@file.link other_file
@file.content = 'foobar'
assert_equal 'foobar', other_file.content
end
def test_clone_creates_new_inode
clone = @file.clone
refute clone.inode.equal?(@file.inode)
end
def test_cloning_does_not_use_same_content_object
clone = @file.clone
clone.content = 'foo'
@file.content = 'bar'
assert_equal 'foo', clone.content
assert_equal 'bar', @file.content
end
def test_raises_an_error_with_the_correct_path
path = '/some/non/existing/file'
begin
FakeFS::File.new path
msg = nil
rescue Errno::ENOENT => e
msg = e.message
end
assert_equal "No such file or directory - #{path}", msg
end
def test_file_size_question_works
assert_nil FileTest.size?('does-not-exist.txt')
File.open('empty.txt', 'w') do |f|
f << ''
end
assert_nil FileTest.size?('empty.txt')
File.open('one-char.txt', 'w') do |f|
f << 'a'
end
assert_equal 1, FileTest.size?('one-char.txt')
end
end
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