MDL-22183 lib: More unit tests for next day start.

mvaraujo · Aug 18, 2016 · 3b87339 · 3b87339
1 parent 3cdc35b
commit 3b87339
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/lib/tests/statslib_test.php b/lib/tests/statslib_test.php
@@ -388,6 +388,22 @@ public function test_statslib_get_base_daily() {
     public function test_statslib_get_next_day_start() {
         $this->setTimezone(0);
         $this->assertEquals(1272758400, stats_get_next_day_start(1272686410));
+
+        // Try setting timezone to some place in the US.
+        $this->setTimezone('America/New_York', 'America/New_York');
+        // Then set the time for midnight before daylight savings.
+        // 1425790800 is midnight in New York (2015-03-08) Daylight saving will occur in 2 hours time.
+        // 1425873600 is midnight the next day.
+        $this->assertEquals(1425873600, stats_get_next_day_start(1425790800));
+        $this->assertEquals(23, ((1425873600 - 1425790800) / 60 ) / 60);
+        // Then set the time for midnight before daylight savings ends.
+        // 1446350400 is midnight in New York (2015-11-01) Daylight saving will finish in 2 hours time.
+        // 1446440400 is midnight the next day.
+        $this->assertEquals(1446440400, stats_get_next_day_start(1446350400));
+        $this->assertEquals(25, ((1446440400 - 1446350400) / 60 ) / 60);
+        // The next day should be normal.
+        $this->assertEquals(1446526800, stats_get_next_day_start(1446440400));
+        $this->assertEquals(24, ((1446526800 - 1446440400) / 60 ) / 60);
     }
 
     /**