diff -r 3fccf43160a7 -r 07b44a378ad8 server/src/tests/Controllers/DateStatsControllerTest.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/src/tests/Controllers/DateStatsControllerTest.php	Fri Sep 30 00:43:04 2016 +0200
@@ -0,0 +1,268 @@
+<?php
+
+use Mockery as m;
+
+use EasyRdf\Literal;
+
+class DateStatsControllerTest extends TestCase
+{
+    private $sparqlClient;
+
+    public function setUp() {
+
+        parent::setup();
+
+        // create a mock of the post repository interface and inject it into the
+        // IoC container
+        $this->sparqlClient = m::mock('CorpusParole\Libraries\Sparql\SparqlClient');
+        $this->app->instance('CorpusParole\Libraries\Sparql\SparqlClient', $this->sparqlClient);
+    }
+
+    public function tearDown() {
+        m::close();
+        parent::tearDown();
+    }
+
+
+    public function testIndexQuery() {
+
+        $query =  preg_replace('/\s+/', ' ', "SELECT (?d as ?date) (COUNT(?d) AS ?count)
+            WHERE {
+                ?_ a <http://www.europeana.eu/schemas/edm/ProvidedCHO>.
+                ?_ <http://purl.org/dc/terms/created> ?d
+            }
+            GROUP BY ?d
+            ORDER BY ?d");
+
+
+        $this->sparqlClient
+            ->shouldReceive('query')
+            ->with($query)
+            ->once()
+            ->andReturn(new \ArrayIterator([]));
+        $this->get('/api/v1/stats/datestats/');
+        $this->seeJsonEquals(["datestats" => []]);
+    }
+
+    public function testIndexMultiple() {
+
+         $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('1975', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+                 (object)['date'=>new Literal('1965', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(2)],
+                 (object)['date'=>new Literal('1955', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(3)],
+             ]));
+         $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+         $this->seeJsonEquals(["datestats" => [
+             "1955" => 3,
+             "1965" => 2,
+             "1975" => 1,
+         ]]);
+    }
+
+    public function testIndexSimple() {
+
+         $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('1955', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+                 (object)['date'=>new Literal('1965', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+                 (object)['date'=>new Literal('1975', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+             ]));
+         $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+         $this->seeJsonEquals(["datestats" => [
+             "1955" => 1,
+             "1965" => 1,
+             "1975" => 1,
+         ]]);
+    }
+
+    public function testIndexPeriod() {
+
+        $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('start=1955; end=1965', null, "http://purl.org/dc/terms/Period"), 'count' => Literal::create(11)],
+             ]));
+        $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+        $this->seeJsonEquals(["datestats" => [
+            "1955" => 1,
+            "1956" => 1,
+            "1957" => 1,
+            "1958" => 1,
+            "1959" => 1,
+            "1960" => 1,
+            "1961" => 1,
+            "1962" => 1,
+            "1963" => 1,
+            "1964" => 1,
+            "1965" => 1,
+        ]]);
+    }
+
+    public function testIndexPeriodRemainMore() {
+
+        $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('start=1955; end=1965', null, "http://purl.org/dc/terms/Period"), 'count' => Literal::create(15)],
+             ]));
+        $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+        $this->seeJsonEquals(["datestats" => [
+            "1955" => 2,
+            "1956" => 2,
+            "1957" => 2,
+            "1958" => 2,
+            "1959" => 1,
+            "1960" => 1,
+            "1961" => 1,
+            "1962" => 1,
+            "1963" => 1,
+            "1964" => 1,
+            "1965" => 1,
+        ]]);
+    }
+
+    public function testIndexPeriodRemainLess() {
+
+        $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('start=1955; end=1965', null, "http://purl.org/dc/terms/Period"), 'count' => Literal::create(10)],
+             ]));
+        $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+        $this->seeJsonEquals(["datestats" => [
+            "1955" => 1,
+            "1956" => 1,
+            "1957" => 1,
+            "1958" => 1,
+            "1959" => 1,
+            "1960" => 1,
+            "1961" => 1,
+            "1962" => 1,
+            "1963" => 1,
+            "1964" => 1,
+        ]]);
+    }
+
+    public function testIndexMix() {
+
+        $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('start=1955; end=1965', null, "http://purl.org/dc/terms/Period"), 'count' => Literal::create(11)],
+                 (object)['date'=>new Literal('1960', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(2)],
+             ]));
+        $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+        $this->seeJsonEquals(["datestats" => [
+            "1955" => 1,
+            "1956" => 1,
+            "1957" => 1,
+            "1958" => 1,
+            "1959" => 1,
+            "1960" => 3,
+            "1961" => 1,
+            "1962" => 1,
+            "1963" => 1,
+            "1964" => 1,
+            "1965" => 1,
+        ]]);
+    }
+
+    public function testIndexBadDate() {
+
+         $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('1955', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+                 (object)['date'=>new Literal('HELLO', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+                 (object)['date'=>new Literal('1975', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+             ]));
+         $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+         $this->seeJsonEquals(["datestats" => [
+             "1955" => 1,
+             "1975" => 1,
+         ]]);
+    }
+
+    public function testIndexBadPeriod() {
+
+        $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('start=1955; end=FOO', null, "http://purl.org/dc/terms/Period"), 'count' => Literal::create(11)],
+             ]));
+        $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+        $this->seeJsonEquals(["datestats" => [
+        ]]);
+    }
+
+    public function testIndexBadPeriodMissing() {
+
+        $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('start=1955', null, "http://purl.org/dc/terms/Period"), 'count' => Literal::create(11)],
+             ]));
+        $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+        $this->seeJsonEquals(["datestats" => [
+        ]]);
+    }
+
+    public function testIndexFullPeriod() {
+
+        $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('start=1955; end=1965; scheme=v3; name=v4;', null, "http://purl.org/dc/terms/Period"), 'count' => Literal::create(11)],
+             ]));
+        $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+        $this->seeJsonEquals(["datestats" => [
+            "1955" => 1,
+            "1956" => 1,
+            "1957" => 1,
+            "1958" => 1,
+            "1959" => 1,
+            "1960" => 1,
+            "1961" => 1,
+            "1962" => 1,
+            "1963" => 1,
+            "1964" => 1,
+            "1965" => 1,
+        ]]);
+    }
+
+    public function testIndexMultipleFormat() {
+
+         $this->sparqlClient
+             ->shouldReceive('query')
+             ->once()
+             ->andReturn(new \ArrayIterator([
+                 (object)['date'=>new Literal('1975-02-05', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(1)],
+                 (object)['date'=>new Literal('1965-03', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(2)],
+                 (object)['date'=>new Literal('1955-02-12T08:30:00+00:00', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(3)],
+                 (object)['date'=>new Literal('1950-08-18T08:30:00Z', null, "http://purl.org/dc/terms/W3CDTF"), 'count' => Literal::create(4)],
+             ]));
+         $this->get('/api/v1/stats/datestats/')->assertTrue($this->response->isOk(), $this->response->content());
+         $this->seeJsonEquals(["datestats" => [
+             "1950" => 4,
+             "1955" => 3,
+             "1965" => 2,
+             "1975" => 1,
+         ]]);
+    }
+
+
+
+}