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require 'fileutils'
module FileUpdateCheckerSharedTests
extend ActiveSupport::Testing::Declarative
include FileUtils
def tmpdir
@tmpdir
end
def tmpfile(name)
"#{tmpdir}/#{name}"
end
def tmpfiles
@tmpfiles ||= %w(foo.rb bar.rb baz.rb).map { |f| tmpfile(f) }
end
def run(*args)
Dir.mktmpdir(nil, __dir__) { |dir| @tmpdir = dir; super }
end
test 'should not execute the block if no paths are given' do
silence_warnings { require 'listen' }
i = 0
checker = new_checker { i += 1 }
assert !checker.execute_if_updated
assert_equal 0, i
end
test 'should not execute the block if no files change' do
i = 0
FileUtils.touch(tmpfiles)
checker = new_checker(tmpfiles) { i += 1 }
assert !checker.execute_if_updated
assert_equal 0, i
end
test 'should execute the block once when files are created' do
i = 0
checker = new_checker(tmpfiles) { i += 1 }
touch(tmpfiles)
assert checker.execute_if_updated
assert_equal 1, i
end
test 'should execute the block once when files are modified' do
i = 0
FileUtils.touch(tmpfiles)
checker = new_checker(tmpfiles) { i += 1 }
touch(tmpfiles)
assert checker.execute_if_updated
assert_equal 1, i
end
test 'should execute the block once when files are deleted' do
i = 0
FileUtils.touch(tmpfiles)
checker = new_checker(tmpfiles) { i += 1 }
rm_f(tmpfiles)
assert checker.execute_if_updated
assert_equal 1, i
end
test 'updated should become true when watched files are created' do
i = 0
checker = new_checker(tmpfiles) { i += 1 }
assert !checker.updated?
touch(tmpfiles)
assert checker.updated?
end
test 'updated should become true when watched files are modified' do
i = 0
FileUtils.touch(tmpfiles)
checker = new_checker(tmpfiles) { i += 1 }
assert !checker.updated?
touch(tmpfiles)
assert checker.updated?
end
test 'updated should become true when watched files are deleted' do
i = 0
FileUtils.touch(tmpfiles)
checker = new_checker(tmpfiles) { i += 1 }
assert !checker.updated?
rm_f(tmpfiles)
assert checker.updated?
end
test 'should be robust to handle files with wrong modified time' do
i = 0
FileUtils.touch(tmpfiles)
now = Time.now
time = Time.mktime(now.year + 1, now.month, now.day) # wrong mtime from the future
File.utime(time, time, tmpfiles[0])
checker = new_checker(tmpfiles) { i += 1 }
touch(tmpfiles[1..-1])
assert checker.execute_if_updated
assert_equal 1, i
end
test 'should cache updated result until execute' do
i = 0
checker = new_checker(tmpfiles) { i += 1 }
assert !checker.updated?
touch(tmpfiles)
assert checker.updated?
checker.execute
assert !checker.updated?
end
test 'should execute the block if files change in a watched directory one extension' do
i = 0
checker = new_checker([], tmpdir => :rb) { i += 1 }
touch(tmpfile('foo.rb'))
assert checker.execute_if_updated
assert_equal 1, i
end
test 'should execute the block if files change in a watched directory several extensions' do
i = 0
checker = new_checker([], tmpdir => [:rb, :txt]) { i += 1 }
touch(tmpfile('foo.rb'))
assert checker.execute_if_updated
assert_equal 1, i
touch(tmpfile('foo.txt'))
assert checker.execute_if_updated
assert_equal 2, i
end
test 'should not execute the block if the file extension is not watched' do
i = 0
checker = new_checker([], tmpdir => :txt) { i += 1 }
touch(tmpfile('foo.rb'))
assert !checker.execute_if_updated
assert_equal 0, i
end
test 'does not assume files exist on instantiation' do
i = 0
non_existing = tmpfile('non_existing.rb')
checker = new_checker([non_existing]) { i += 1 }
touch(non_existing)
assert checker.execute_if_updated
assert_equal 1, i
end
test 'detects files in new subdirectories' do
i = 0
checker = new_checker([], tmpdir => :rb) { i += 1 }
subdir = tmpfile('subdir')
mkdir(subdir)
wait
assert !checker.execute_if_updated
assert_equal 0, i
touch("#{subdir}/nested.rb")
assert checker.execute_if_updated
assert_equal 1, i
end
test 'looked up extensions are inherited in subdirectories not listening to them' do
i = 0
subdir = tmpfile('subdir')
mkdir(subdir)
checker = new_checker([], tmpdir => :rb, subdir => :txt) { i += 1 }
touch(tmpfile('new.txt'))
assert !checker.execute_if_updated
assert_equal 0, i
# subdir does not look for Ruby files, but its parent tmpdir does.
touch("#{subdir}/nested.rb")
assert checker.execute_if_updated
assert_equal 1, i
touch("#{subdir}/nested.txt")
assert checker.execute_if_updated
assert_equal 2, i
end
end
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