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# frozen_string_literal: true
require "fileutils"
module FileUpdateCheckerSharedTests
extend ActiveSupport::Testing::Declarative
include FileUtils
def tmpdir
@tmpdir
end
def tmpfile(name)
File.join(tmpdir, name)
end
def tmpfiles
@tmpfiles ||= %w(foo.rb bar.rb baz.rb).map { |f| tmpfile(f) }
end
def run(*args)
capture_exceptions do
Dir.mktmpdir(nil, __dir__) { |dir| @tmpdir = dir; super }
end
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_not 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_not 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)
wait
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)
wait
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)
wait
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_not_predicate checker, :updated?
touch(tmpfiles)
wait
assert_predicate 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_not_predicate checker, :updated?
touch(tmpfiles)
wait
assert_predicate 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_not_predicate checker, :updated?
rm_f(tmpfiles)
wait
assert_predicate 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])
wait
assert checker.execute_if_updated
assert_equal 1, i
end
test "should return max_time for files with mtime = Time.at(0)" do
i = 0
FileUtils.touch(tmpfiles)
time = Time.at(0) # wrong mtime from the future
File.utime(time, time, tmpfiles[0])
checker = new_checker(tmpfiles) { i += 1 }
touch(tmpfiles[1..-1])
wait
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_not_predicate checker, :updated?
touch(tmpfiles)
wait
assert_predicate checker, :updated?
checker.execute
assert_not_predicate 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"))
wait
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"))
wait
assert checker.execute_if_updated
assert_equal 1, i
touch(tmpfile("foo.txt"))
wait
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"))
wait
assert_not 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)
wait
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_not checker.execute_if_updated
assert_equal 0, i
touch(File.join(subdir, "nested.rb"))
wait
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"))
wait
assert_not checker.execute_if_updated
assert_equal 0, i
# subdir does not look for Ruby files, but its parent tmpdir does.
touch(File.join(subdir, "nested.rb"))
wait
assert checker.execute_if_updated
assert_equal 1, i
touch(File.join(subdir, "nested.txt"))
wait
assert checker.execute_if_updated
assert_equal 2, i
end
test "initialize raises an ArgumentError if no block given" do
assert_raise ArgumentError do
new_checker([])
end
end
end
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