Bug 21105: Regression tests

This patch introduces a regression test for the fixed behavior.
I also changed a oneliner regex we had for stripping query parameters
because it was causing a warning with the tests base URL
(http://localhost) because it was generating an empty baseURL.

To test:
1. Apply the regression tests patch
2. Run:
   $ kshell
  k$ prove t/db_dependent/OAI/Server.t
=> FAIL: Tests fail, the response is incorrect!
3. Apply the bug's patch
4. Repeat 2
=> SUCCESS: Tests pass! Good response!

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

t/db_dependent/OAI/Server.t

@@ -514,7 +514,7 @@ subtest 'ListSets tests' => sub {
 
 subtest 'Tests for timestamp handling' => sub {
 
-    plan tests => 27;
+    plan tests => 28;
 
     t::lib::Mocks::mock_preference( 'OAI::PMH'         => 1 );
     t::lib::Mocks::mock_preference( 'OAI-PMH:MaxCount' => 3 );
@@ -614,6 +614,21 @@ subtest 'Tests for timestamp handling' => sub {
         $get_no_items,
         { GetRecord => $expected_no_items }
     );
+    test_query(
+        'Identify - earliestDatestamp in the right format',
+        { verb => 'Identify' },
+        {   Identify => {
+                adminEmail        => 'root@localhost',
+                baseURL           => 'http://localhost',
+                compression       => 'gzip',
+                deletedRecord     => 'persistent',
+                earliestDatestamp => '2014-05-07T13:36:23Z',
+                granularity       => 'YYYY-MM-DDThh:mm:ssZ',
+                protocolVersion   => '2.0',
+                repositoryName    => 'My Library',
+            }
+        }
+    );
 
     # Add an item 10 seconds later and check results
     set_relative_time(10);