1 files changed, 107 insertions, 0 deletions
diff --git a/test/unit/test_conditional.rb b/test/unit/test_conditional.rb
new file mode 100644
index 0000000..64517db
--- /dev/null
+++ b/test/unit/test_conditional.rb
@@ -0,0 +1,107 @@
+# Copyright (c) 2005 Zed A. Shaw 
+# You can redistribute it and/or modify it under the same terms as Ruby.
+#
+# Additional work donated by contributors.  See http://mongrel.rubyforge.org/attributions.html 
+# for more information.
+
+require 'test/test_helper'
+
+include Mongrel
+
+class ConditionalResponseTest < Test::Unit::TestCase
+  def setup
+    @server = HttpServer.new('127.0.0.1', process_based_port)
+    @server.register('/', Mongrel::DirHandler.new('.'))
+    @server.run
+    
+    @http = Net::HTTP.new(@server.host, @server.port)
+
+    # get the ETag and Last-Modified headers
+    @path = '/README'
+    res = @http.start { |http| http.get(@path) }
+    assert_not_nil @etag = res['ETag']
+    assert_not_nil @last_modified = res['Last-Modified']
+    assert_not_nil @content_length = res['Content-Length']
+  end
+
+  def teardown
+    @server.stop(true)
+  end
+
+  # status should be 304 Not Modified when If-None-Match is the matching ETag
+  def test_not_modified_via_if_none_match
+    assert_status_for_get_and_head Net::HTTPNotModified, 'If-None-Match' => @etag
+  end
+
+  # status should be 304 Not Modified when If-Modified-Since is the matching Last-Modified date
+  def test_not_modified_via_if_modified_since
+    assert_status_for_get_and_head Net::HTTPNotModified, 'If-Modified-Since' => @last_modified
+  end
+
+  # status should be 304 Not Modified when If-None-Match is the matching ETag
+  # and If-Modified-Since is the matching Last-Modified date
+  def test_not_modified_via_if_none_match_and_if_modified_since
+    assert_status_for_get_and_head Net::HTTPNotModified, 'If-None-Match' => @etag, 'If-Modified-Since' => @last_modified
+  end
+
+  # status should be 200 OK when If-None-Match is invalid
+  def test_invalid_if_none_match
+    assert_status_for_get_and_head Net::HTTPOK, 'If-None-Match' => 'invalid'
+    assert_status_for_get_and_head Net::HTTPOK, 'If-None-Match' => 'invalid', 'If-Modified-Since' => @last_modified
+  end
+
+  # status should be 200 OK when If-Modified-Since is invalid
+  def test_invalid_if_modified_since
+    assert_status_for_get_and_head Net::HTTPOK,                           'If-Modified-Since' => 'invalid'
+    assert_status_for_get_and_head Net::HTTPOK, 'If-None-Match' => @etag, 'If-Modified-Since' => 'invalid'
+  end
+
+  # status should be 304 Not Modified when If-Modified-Since is greater than the Last-Modified header, but less than the system time
+  def test_if_modified_since_greater_than_last_modified
+    sleep 2
+    last_modified_plus_1 = (Time.httpdate(@last_modified) + 1).httpdate
+    assert_status_for_get_and_head Net::HTTPNotModified,                           'If-Modified-Since' => last_modified_plus_1
+    assert_status_for_get_and_head Net::HTTPNotModified, 'If-None-Match' => @etag, 'If-Modified-Since' => last_modified_plus_1
+  end
+
+  # status should be 200 OK when If-Modified-Since is less than the Last-Modified header
+  def test_if_modified_since_less_than_last_modified
+    last_modified_minus_1 = (Time.httpdate(@last_modified) - 1).httpdate
+    assert_status_for_get_and_head Net::HTTPOK,                           'If-Modified-Since' => last_modified_minus_1
+    assert_status_for_get_and_head Net::HTTPOK, 'If-None-Match' => @etag, 'If-Modified-Since' => last_modified_minus_1
+  end
+
+  # status should be 200 OK when If-Modified-Since is a date in the future
+  def test_future_if_modified_since
+    the_future = Time.at(2**31-1).httpdate
+    assert_status_for_get_and_head Net::HTTPOK,                           'If-Modified-Since' => the_future
+    assert_status_for_get_and_head Net::HTTPOK, 'If-None-Match' => @etag, 'If-Modified-Since' => the_future
+  end
+
+  # status should be 200 OK when If-None-Match is a wildcard
+  def test_wildcard_match
+    assert_status_for_get_and_head Net::HTTPOK, 'If-None-Match' => '*'
+    assert_status_for_get_and_head Net::HTTPOK, 'If-None-Match' => '*', 'If-Modified-Since' => @last_modified
+  end
+
+  private
+
+    # assert the response status is correct for GET and HEAD
+    def assert_status_for_get_and_head(response_class, headers = {})
+      %w{ get head }.each do |method|
+        res = @http.send(method, @path, headers)
+        assert_kind_of response_class, res
+        assert_equal @etag, res['ETag']
+        case response_class.to_s
+          when 'Net::HTTPNotModified' then
+            assert_nil res['Last-Modified']
+            assert_nil res['Content-Length']
+          when 'Net::HTTPOK' then
+            assert_equal @last_modified, res['Last-Modified']
+            assert_equal @content_length, res['Content-Length']
+          else
+            fail "Incorrect response class: #{response_class}"
+        end
+      end
+    end
+end