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-rw-r--r--activesupport/lib/active_support/file_update_checker.rb15
-rw-r--r--activesupport/test/file_update_checker_shared_tests.rb17
2 files changed, 29 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/file_update_checker.rb b/activesupport/lib/active_support/file_update_checker.rb
index 4f0a2dedc5..d1eb410c85 100644
--- a/activesupport/lib/active_support/file_update_checker.rb
+++ b/activesupport/lib/active_support/file_update_checker.rb
@@ -111,13 +111,22 @@ module ActiveSupport
# healthy to consider this edge case because with mtimes in the future
# reloading is not triggered.
def max_mtime(paths)
+ return nil if paths.empty?
+
time_now = Time.now
- time_at_zero = Time.at(0)
- max_time = time_at_zero
+ max_time = nil
paths.each do |path|
time = File.mtime(path)
+ if max_time.nil?
+ if time.compare_without_coercion(time_now) < 0
+ max_time = time
+ end
+
+ next
+ end
+
# This avoids ActiveSupport::CoreExt::Time#time_with_coercion
# which is super slow when comparing two Time objects
#
@@ -128,7 +137,7 @@ module ActiveSupport
end
end
- max_time.object_id == time_at_zero.object_id ? nil : max_time
+ max_time
end
def compile_glob(hash)
diff --git a/activesupport/test/file_update_checker_shared_tests.rb b/activesupport/test/file_update_checker_shared_tests.rb
index 5207860a0e..a78c3a67b6 100644
--- a/activesupport/test/file_update_checker_shared_tests.rb
+++ b/activesupport/test/file_update_checker_shared_tests.rb
@@ -134,6 +134,23 @@ module FileUpdateCheckerSharedTests
assert_equal 1, i
end
+ test 'should return max_time for files with mtime = Time.at(0)' do
+ i = 0
+
+ FileUtils.touch(tmpfiles)
+
+ now = Time.now
+ 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])
+
+ assert checker.execute_if_updated
+ assert_equal 1, i
+ end
+
test 'should cache updated result until execute' do
i = 0