test: video learning event without experiment data

#2271

Author: jo-elimu

src/test/java/ai/elimu/util/csv/CsvAnalyticsExtractionHelperTest.java

@@ -328,4 +328,29 @@ public void testExtractVideoLearningEvents_v3005009() throws IOException {
         assertEquals("เพลง นับเลข 1-10 ｜ เพลงเด็กอนุบาล ｜ นับเล", videoLearningEvent.getVideoTitle());
         assertEquals(9, videoLearningEvent.getVideoId());
     }
+
+    /**
+     * Test extraction of data from CSV files generated by version 3005013 of the Analytics app: 
+     * https://github.com/elimu-ai/analytics/releases/tag/3.5.13
+     */
+    @Test
+    public void testExtractVideoLearningEvents_v3005013() throws IOException {
+        ResourceLoader resourceLoader = new ClassRelativeResourceLoader(CsvAnalyticsExtractionHelper.class);
+        Resource resource = resourceLoader.getResource("7e89c8e7f4c68405_3005013_video-learning-events_2025-06-13.csv");
+        File csvFile = resource.getFile();
+        
+        List<VideoLearningEvent> videoLearningEvents = CsvAnalyticsExtractionHelper.extractVideoLearningEvents(csvFile);
+        assertEquals(9, videoLearningEvents.size());
+
+        VideoLearningEvent videoLearningEvent = videoLearningEvents.get(0);
+        assertEquals(1749775644 * 1_000L, videoLearningEvent.getTimestamp().getTimeInMillis());
+        assertEquals("7e89c8e7f4c68405", videoLearningEvent.getAndroidId());
+        assertEquals("ai.elimu.filamu", videoLearningEvent.getPackageName());
+        assertNull(videoLearningEvent.getAdditionalData());
+        assertEquals(LearningEventType.VIDEO_OPENED, videoLearningEvent.getLearningEventType());
+        assertNull(videoLearningEvent.getResearchExperiment());
+        assertNull(videoLearningEvent.getExperimentGroup());
+        assertEquals("akili and me - letter b", videoLearningEvent.getVideoTitle());
+        assertEquals(2, videoLearningEvent.getVideoId());
+    }
 }

src/test/resources/ai/elimu/util/csv/7e89c8e7f4c68405_3005013_video-learning-events_2025-06-13.csv

@@ -0,0 +1,10 @@
+id,timestamp,package_name,additional_data,learning_event_type,research_experiment,experiment_group,video_title,video_id
+1,1749775644,ai.elimu.filamu,,VIDEO_OPENED,,,akili and me - letter b,2
+2,1749775646,ai.elimu.filamu,,VIDEO_CLOSED_BEFORE_COMPLETION,,,,2
+3,1749775647,ai.elimu.filamu,,VIDEO_OPENED,,,[test] a test video,44
+4,1749775648,ai.elimu.filamu,,VIDEO_CLOSED_BEFORE_COMPLETION,,,,44
+5,1749775649,ai.elimu.filamu,,VIDEO_OPENED,,,[test] a test video,44
+6,1749775653,ai.elimu.filamu,,VIDEO_CLOSED_BEFORE_COMPLETION,,,,44
+7,1749799858,ai.elimu.filamu,,VIDEO_OPENED,,,[test] a test video,44
+8,1749799867,ai.elimu.filamu,,VIDEO_COMPLETED,,,[test] a test video,44
+9,1749800215,ai.elimu.filamu,,VIDEO_OPENED,,,akili and me - the rectangle song,13