From 71703c98ba2bf65a6fed94917b039827cb63bace Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Valim?= <jose.valim@gmail.com>
Date: Sun, 20 Jun 2010 13:26:42 +0200
Subject: Add ActiveSupport::FileUpdateChecker.

---
 activesupport/test/file_update_checker_test.rb | 56 ++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 activesupport/test/file_update_checker_test.rb

(limited to 'activesupport/test')

diff --git a/activesupport/test/file_update_checker_test.rb b/activesupport/test/file_update_checker_test.rb
new file mode 100644
index 0000000000..baf29cc337
--- /dev/null
+++ b/activesupport/test/file_update_checker_test.rb
@@ -0,0 +1,56 @@
+require 'abstract_unit'
+require 'test/unit'
+require 'active_support'
+require 'fileutils'
+
+MTIME_FIXTURES_PATH = File.expand_path("../fixtures", __FILE__)
+
+class FileUpdateCheckerTest < Test::Unit::TestCase
+  FILES = %w(1.txt 2.txt 3.txt)
+
+  def setup
+    FileUtils.touch(FILES)
+  end
+
+  def teardown
+    FileUtils.rm(FILES)
+  end
+
+  def test_should_not_execute_the_block_if_no_paths_are_given
+    i = 0
+    checker = ActiveSupport::FileUpdateChecker.new([]){ i += 1 }
+    checker.execute_if_updated
+    assert_equal 0, i
+  end
+
+  def test_should_invoke_the_block_on_first_call_if_it_does_not_calculate_last_updated_at_on_load
+    i = 0
+    checker = ActiveSupport::FileUpdateChecker.new(FILES){ i += 1 }
+    checker.execute_if_updated
+    assert_equal 1, i
+  end
+
+  def test_should_not_invoke_the_block_on_first_call_if_it_calculates_last_updated_at_on_load
+    i = 0
+    checker = ActiveSupport::FileUpdateChecker.new(FILES, true){ i += 1 }
+    checker.execute_if_updated
+    assert_equal 0, i
+  end
+
+  def test_should_not_invoke_the_block_if_no_file_has_changed
+    i = 0
+    checker = ActiveSupport::FileUpdateChecker.new(FILES){ i += 1 }
+    5.times { checker.execute_if_updated }
+    assert_equal 1, i
+  end
+
+  def test_should_invoke_the_block_if_a_file_has_changed
+    i = 0
+    checker = ActiveSupport::FileUpdateChecker.new(FILES){ i += 1 }
+    checker.execute_if_updated
+    sleep(1)
+    FileUtils.touch(FILES)
+    checker.execute_if_updated
+    assert_equal 2, i
+  end
+end
-- 
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